@article {2436, title = {Assessment of critical flaw sizes and crack driving forces during additive manufacturing of metallic materials}, journal = {Addit. Manuf.}, volume = {111}, year = {2025}, pages = {104985}, author = {Mullin, Kaitlyn M and Pollock, Tresa M and Begley, Matthew R} } @article {2421, title = {Coupled infrared imaging and multiphysics modeling to predict three-dimensional thermal characteristics during selective laser melting}, year = {2025}, abstract = {

Laser heating during additive manufacturing (AM) induces extreme and transient thermal conditions which critically influence the microstructure evolution and mechanical properties of the resulting component. However, accurately resolving these conditions with sufficient spatiotemporal accuracy remains a central challenge. We demonstrate a unique approach that couples high-speed infrared imaging, during selective laser melting of MAR-M247, with a transient three-dimensional (3D) multiphysics simulation to reconstruct the dynamic sub-surface temperature distribution of the melt pool. This integrated framework enables the estimation of experimentally-validated, 3D solidification conditions-including solidification velocities and cooling rates-at the solid-liquid interface while also significantly lowering computational cost. By quantifying solidification conditions, we predict variations in microstructure size and orientation driven by laser processing parameters and validate them with ex situ scanning electron microscopy and electron backscatter diffraction maps. Our findings substantiate that an integrated experimental-computational approach is crucial to realize in situ prediction and optimization of microstructures in commercial AM.

}, author = {Kumar, Vijay and Mullin, Kaitlyn M and Park, Hyunggon and Gerigk, Matthew and Bresk, Andrew and Pollock, Tresa M and Zhu, Yangying} } @article {2386, title = {Design of an alumina forming coating for Nb-base refractory alloys}, journal = {Mater. Des.}, volume = {251}, year = {2025}, pages = {113652}, author = {Holgate, Collin S and Frey, Carolina and Endsley, Melina A and Suzuki, Akane and Levi, Carlos G and Pollock, Tresa M} } @article {2431, title = {Detection and classification of cracking via acoustic emission during laser-melting screening for additive manufacturing}, journal = {JOM (1989)}, volume = {77}, year = {2025}, pages = {7274{\textendash}7286}, author = {Raeker, Evan B and Tulshibagwale, Nikhil and Mullin, Kaitlyn M and Lamb, James D and Pollock, Tresa M} } @article {2366, title = {Direct electron detection for EBSD of low symmetry \& beam sensitive ceramics}, journal = {Ultramicroscopy}, volume = {268}, year = {2025}, pages = {114079}, abstract = {

Electron backscatter diffraction (EBSD) is a powerful tool for determining the orientations of near-surface grains in engineering materials. However, many ceramics present challenges for routine EBSD data collection and indexing due to small grain sizes, high crack densities, beam and charge sensitivities, low crystal symmetries, and pseudo-symmetric pattern variants. Micro-cracked monoclinic hafnia, tetragonal hafnon, and hafnia/hafnon composites exhibit all such features, and are used in the present work to show the efficacy of a novel workflow based on a direct detecting EBSD sensor and a state-of-the-art pattern indexing approach. At 5 and 10 keV primary beam energies (where beam-induced damage and surface charge accumulation are minimal), the direct electron detector produces superior diffraction patterns with 10x lower doses compared to a phosphor-coupled indirect detector. Further, pseudo-symmetric variant-related indexing errors from a Hough-based approach (which account for at least 4\%-14\% of map areas) are easily resolved by dictionary indexing. In short, the workflow unlocks fundamentally new opportunities to characterize materials historically unsuited for EBSD.

}, keywords = {Beam sensitive materials, Ceramics, Dictionary indexing, Direct electron detection, Electron backscatter diffraction}, author = {Della Ventura, Nicol{\`o} M and Ericks, Andrew R and Echlin, McLean P and Moore, Kalani and Pollock, Tresa M and Begley, Matthew R and Zok, Frank W and De Graef, Marc and Gianola, Daniel S} } @article {2416, title = {Energy-resolved EBSD using a monolithic direct electron detector}, year = {2025}, abstract = {

Accurate quantification of the energy distribution of backscattered electrons (BSEs) contributing to electron backscatter diffraction (EBSD) patterns remains as an active challenge. This study introduces an energy-resolved EBSD methodology based on a monolithic active pixel sensor direct electron detector and an electron-counting algorithm to enable the energy quantification of individual BSEs, providing direct measurements of electron energy spectra within diffraction patterns. Following detector calibration of the detector signal as a function of primary beam energy, measurements using a 12 keV primary beam on Si(100) reveal a broad BSE energy distribution across the diffraction pattern, extending down to 3 keV. Furthermore, an angular dependence in the weighted average BSE energy is observed, closely matching predictions from Monte Carlo simulations. Pixel-resolved energy maps reveal subtle modulations at Kikuchi band edges, offering insights into the backscattering process. By applying energy filtering within spectral windows as narrow as 2 keV centered on the primary beam energy, significant enhancement in pattern clarity and high-frequency detail is observed. Notably, electrons in the 2\–8 keV range, despite having undergone substantial energy loss (\ΔE = 4\–10 keV), still produce Kikuchi patterns. By enabling energy determination at the single-electron level, this approach introduces a versatile tool-set for expanding the quantitative capabilities of EBSD, thereby offering the potential to deepen the understanding of diffraction contrast mechanisms and to advance the precision of crystallographic measurements.

}, author = {Della Ventura, Nicol{\`o} M and Moore, Kalani and Echlin, McLean P and Begley, Matthew R and Pollock, Tresa M and De Graef, Marc and Gianola, Daniel S} } @article {2441, title = {High-throughput refractory alloy design for additive manufacturing}, journal = {Mater. Des.}, volume = {259}, year = {2025}, pages = {114911}, author = {Mullin, Kaitlyn M and Allgor, Ella C and Holgate, Collin S and Monir, Kirmina and Seward, Gareth G E and Philips, Noah R and Pollock, Tresa M} } @unpublished {2406, title = {Mining multimodal fatigue data using reasoning foundation models and formalized domain knowledge}, year = {2025}, abstract = {

The scarcity and expense of fatigue data limits optimal design of components and constrains companies to a few well qualified materials when safety-critical applications are concerned. This research investigates different strategies to improve extraction of structured information from unstructured scientific literature\–-to date the largest corpus of fatigue information. Successful generative extraction is within reach considering latest foundation vision and reasoning language model (VLM/RLM) developments. In this work, a schema-based extraction is attempted for which an object-oriented fatigue data schema is designed. The schema provides labels, definitions and type-constraints for the target entities as contextual domain knowledge to the VLM/RLM model. The importance of nuanced target field definitions within the schema and constrained decoding is explored. Furthermore, the schema-based approach is gradually extended to form two agentic language model systems, one which utilizes a step-wise, human-inspired approach to first determine discriminative cues from fatigue S-N diagrams and one further applying dynamic knowledge augmentation. The latter dynamic workflow exploits the synergy of reasoning language models and ontologies by performing logical reasoning and web-search for dynamic knowledge augmentation and hallucination detection. On this rather complex fatigue data extraction task, requiring hierarchical pattern recognition and multimodal extraction, an overall F1-score of 0.82 is achieved, while fields contained in the narrative text modality are extracted with an F1-score of 0.92. The strengths and weaknesses of all models and methodologies are thoroughly discussed and extensions to our workflows are proposed.

}, author = {Mohanty, Jyoti Prakash and Thomas, Akhil and Pollock, Tresa M and Durmaz, Ali Riza} } @article {2411, title = {Modeling the evolution of slip localization: Realization of link to material strength}, journal = {Acta Mater.}, volume = {299}, year = {2025}, pages = {121314}, author = {Ahmadikia, Behnam and Bean, Chris and Stinville, Jean-Charles and Pollock, Tresa M and Beyerlein, Irene J} } @article {2376, title = {Non-destructive evaluation of bulk metallic glass components using resonance ultrasound spectroscopy}, journal = {Appl. Mater. Today}, volume = {42}, year = {2025}, pages = {102529}, author = {Kube, Sebastian A and Bordeenithikasem, Punnathat and Ziemke, Patrick and Lamb, James and Rossin, Jeff and Torbet, Chris and Begley, Matthew R and Dillon, R Peter and Pollock, Tresa M} } @article {2391, title = {Orientation-Adaptive Virtual Imaging of Defects using EBSD}, year = {2025}, abstract = {

EBSD is a foundational technique for characterizing crystallographic orientation, phase distribution, and lattice strain. Embedded within EBSD patterns lies latent information on dislocation structures, subtly encoded due to their deviation from perfect crystallinity - a feature often underutilized. Here, a novel framework termed orientation-adaptive virtual apertures (OAVA) is introduced. OAVAs enable the generation of virtual images tied to specific diffraction conditions, allowing the direct visualization of individual dislocations from a single EBSD map. By dynamically aligning virtual apertures in reciprocal space with the local crystallographic orientation, the method enhances contrast from defect-related strain fields, mirroring the principles of diffraction-contrast imaging in TEM, but without sample tilting. The approach capitalizes on the extensive diffraction space captured in a single high-quality EBSD scan, with its effectiveness enhanced by modern direct electron detectors that offer high-sensitivity at low accelerating voltages, reducing interaction volume and improving spatial resolution. We demonstrate that using OAVAs, identical imaging conditions can be applied across a polycrystalline field-of-view, enabling uniform contrast in differently oriented grains. Furthermore, in single-crystal GaN, threading dislocations are consistently resolved. Algorithms for the automated detection of dislocation contrast are presented, advancing defect characterization. By using OAVAs across a wide range of diffraction conditions in GaN, the visibility/invisibility of defects, owing to the anisotropy of the elastic strain field, is assessed and linked to candidate Burgers vectors. Altogether, OAVA offers a new and high-throughput pathway for orientation-specific defect characterization with the potential for automated, large-area defect analysis in single and polycrystalline materials.

}, author = {Della Ventura, Nicol{\`o} M and Lamb, James D and Lenthe, William C and Echlin, McLean P and P{\"u}rstl, Julia T and Trageser, Emily S and Quevedo, Alejandro M and Begley, Matthew R and Pollock, Tresa M and Gianola, Daniel S and De Graef, Marc} } @article {2371, title = {Refractory multi-principal element alloys with solution and aged HfRu-B2 precipitates}, journal = {Scr. Mater.}, volume = {255}, year = {2025}, pages = {116411}, author = {Frey, Carolina and Neuman, Benjamin and Botros, Anthony and Kube, Sebastian A and Pollock, Tresa M} } @article {2396, title = {Resolving thermal gradients and solidification velocities during laser melting of a refractory alloy}, journal = {Addit. Manuf.}, volume = {105}, year = {2025}, pages = {104750}, author = {Park, Hyunggon and Mullin, Kaitlyn M and Kumar, Vijay and Wander, Olivia and Pollock, Tresa M and Zhu, Yangying} } @article {2426, title = {Solidification behavior and cracking mechanisms of Ru-containing BCC-B2 superalloys}, journal = {Scr. Mater.}, volume = {267}, year = {2025}, pages = {116731}, author = {Mullin, Kaitlyn M and Frey, Carolina and Jalali, Syed I A and Patullo, Michael S and Holgate, Collin S and Hemker, Kevin J and Pollock, Tresa M} } @article {2381, title = {Subsurface microstructure effects on surface resolved slip activity}, journal = {J. Mech. Phys. Solids}, volume = {196}, year = {2025}, pages = {106023}, author = {Hestroffer, Jonathan M and Stinville, Jean-Charles and Charpagne, Marie-agathe and Miller, Matthew P and Pollock, Tresa M and Beyerlein, Irene J} } @article {2401, title = {Very high cycle fatigue behavior of BCC refractory alloy C103}, journal = {Int. J. Fatigue}, year = {2025}, pages = {109139}, author = {Vailhe, Madeline and Torbet, Chris J and Mignerot, Florent and Pollock, Tresa M} } @inbook {2336, title = {3D characterization of defects and microstructure in high density LPBF prints of a CoNi alloy}, booktitle = {The Minerals, Metals \& Materials Series}, series = {The minerals, metals \& materials series}, year = {2024}, pages = {811{\textendash}821}, publisher = {Springer Nature Switzerland}, organization = {Springer Nature Switzerland}, address = {Cham}, author = {Lamb, James D and Raeker, Evan B and Pusch, Kira M and Echlin, McLean P and Forsik, Stephane A J and Zhou, Ning and Dicus, Austin D and Pollock, Tresa M} } @article {2346, title = {Cracking and precipitation behavior of refractory BCC{\textendash}B2 alloys under laser melting conditions}, journal = {Metall. Mater. Trans. A}, volume = {55}, year = {2024}, pages = {3809{\textendash}3823}, author = {Mullin, Kaitlyn M and Kube, Sebastian A and Wu, Sophia K and Pollock, Tresa M} } @article {2286, title = {Deformation mechanisms and defect structures in Heusler intermetallic MnCu2Al}, journal = {Acta Mater.}, volume = {268}, year = {2024}, pages = {119711}, author = {Rhodes, Bailey E and Mayer, Justin A and Xu, Shuozhi and Lamb, James D and Wendorf, Joe and Echlin, McLean P and Pollock, Tresa M and Eggeler, Yolita M and Beyerlein, Irene J and Gianola, Daniel S} } @article {2216, title = {High Temperature B2 Precipitation in Ru-Containing Refractory Multi-principal Element Alloys}, journal = {Metallurgical and Materials Transactions A}, year = {2024}, abstract = {

Ru-based B2 phases present an opportunity to design two-phase BCC + B2 refractory multi-principal element alloys (RMPEAs) with higher temperature stability compared to B2 phases observed in RMPEAs. In this investigation, seven equiatomic Ru-containing RMPEAs were characterized in the as-cast and annealed conditions. Of the two Hf-free alloys, Mo$$_25$$Nb$$_25$$Ta$$_25$$Ru$$_25$$was determined to be a single-phase B2 alloy and Mo$$_20$$Nb$$_20$$Ta$$_20$$W$$_20$$Ru$$_20$$was single-phase BCC. Within all five Hf-containing alloys, phases formed during solidification included HfRu\–B2, disordered BCC, and HfO$$_{2}$$phases. The Hf-containing alloys also precipitated B2 nanoparticles within the BCC phases after further cooling in the solid. All phases were still present after annealing at 1500 $$^\circ$$C to 1600 $$^\circ$$C. The HfRu\–B2 nanoparticles in as-cast Hf$$_20$$Mo$$_20$$Nb$$_20$$Ta$$_20$$Ru$$_20$$were characterized by transmission electron microscopy (TEM), and a lattice misfit of \< 1 pct between the BCC phase and B2 nanoparticles was calculated. Room-temperature micropillar compression tests were performed on BCC + B2 nanoparticle regions in annealed Hf$$_20$$Mo$$_20$$Nb$$_20$$Ta$$_20$$Ru$$_20$$. Post-mortem TEM analysis revealed precipitate shearing by dislocations, resulting in paired dislocations, along with bowing of dislocations around precipitates. Utilizing the insights from this investigation, compositions for RMPEAs with solutionable B2 precipitates stable above 1200 $$^\circ$$C are suggested.

}, issn = {1543-1940}, doi = {10.1007/s11661-024-07368-x}, url = {https://doi.org/10.1007/s11661-024-07368-x}, author = {Frey, Carolina and You, Haojun and Kube, Sebastian and Balbus, Glenn H and Mullin, Kaitlyn and Oppenheimer, Scott and Holgate, Collin S and Pollock, Tresa M} } @article {2301, title = {High temperature B2 precipitation in Ru-containing refractory multi-principal element alloys}, journal = {Metall. Mater. Trans. A}, volume = {55}, year = {2024}, pages = {1739{\textendash}1764}, author = {Frey, Carolina and You, Haojun and Kube, Sebastian and Balbus, Glenn H and Mullin, Kaitlyn and Oppenheimer, Scott and Holgate, Collin S and Pollock, Tresa M} } @article {2291, title = {Materials design for hypersonics}, journal = {Nat. Commun.}, volume = {15}, year = {2024}, pages = {3328}, abstract = {

Hypersonic vehicles must withstand extreme conditions during flights that exceed five times the speed of sound. These systems have the potential to facilitate rapid access to space, bolster defense capabilities, and create a new paradigm for transcontinental earth-to-earth travel. However, extreme aerothermal environments create significant challenges for vehicle materials and structures. This work addresses the critical need to develop resilient refractory alloys, composites, and ceramics. We will highlight key design principles for critical vehicle areas such as primary structures, thermal protection, and propulsion systems; the role of theory and computation; and strategies for advancing laboratory-scale materials to manufacturable flight-ready components.

}, author = {Peters, Adam B and Zhang, Dajie and Chen, Samuel and Ott, Catherine and Oses, Corey and Curtarolo, Stefano and McCue, Ian and Pollock, Tresa M and Eswarappa Prameela, Suhas} } @article {2296, title = {Quantification of melt pool dynamics and microstructure during simulated additive manufacturing}, journal = {Scr. Mater.}, volume = {245}, year = {2024}, pages = {116036}, author = {Lamb, James and Ochoa, Ruben and Eres-Castellanos, Adriana and Klemm-Toole, Jonah and Echlin, McLean P and Sun, Tao and Fezzaa, Kamel and Clarke, Amy and Pollock, Tresa M} } @article {2311, title = {Resolving crystallographic geometrically necessary dislocations in three dimensions in a hexagonal close packed titanium alloy}, journal = {Model. Simul. Mat. Sci. Eng.}, volume = {32}, year = {2024}, pages = {065035}, abstract = {

Abstract Geometrically necessary dislocation (GND) content is measured from mm3-scaled Ti7Al three-dimensional (3D) microstructural data using a theory extended for hexagonal close packed crystals, which accounts for basal, prismatic and pyramidal \⟨ c + a \⟩ type dislocation content. The Ti7Al samples have been mechanically pre-strained to two different strain levels, and will then be strained along the same axis in uniaxial tension during simulation. Both inter- and intragranular GNDs across the microstructures have been characterized, with a large contribution of pyramidal \⟨ c + a \⟩ GNDs, consistent with the relative slip activity involved in pre-straining. The spatially resolved crystallographic GND distributions within the 3D microstructures are used to instantiate a microstructure model for forward modeling deformation simulations by a dislocation density hardening elasto-viscoplastic fast Fourier transform framework. Coarsening the voxel resolution during the initial microstructure construction procedure is shown to strongly impact both the magnitude and spatial distribution of the GNDs and in turn the forward deformation response of the pre-strained material. This study indicates that the voxel resolution desired when transferring from measured to model microstructures need not only be proportionally scaled with the microstructure but also sufficiently fine to capture the subgranular orientation gradients that may already be present in the material.

}, author = {Witzen, Wyatt A and Lamb, James D and Arul Kumar, Mariyappan and Echlin, McLean P and Pollock, Tresa M and Beyerlein, Irene J} } @article {2341, title = {Resolving crystallographic geometrically necessary dislocations in three dimensions in a hexagonal close packed titanium alloy}, journal = {Model. Simul. Mat. Sci. Eng.}, volume = {32}, year = {2024}, pages = {065035}, abstract = {

Abstract Geometrically necessary dislocation (GND) content is measured from mm3-scaled Ti7Al three-dimensional (3D) microstructural data using a theory extended for hexagonal close packed crystals, which accounts for basal, prismatic and pyramidal \⟨ c + a \⟩ type dislocation content. The Ti7Al samples have been mechanically pre-strained to two different strain levels, and will then be strained along the same axis in uniaxial tension during simulation. Both inter- and intragranular GNDs across the microstructures have been characterized, with a large contribution of pyramidal \⟨ c + a \⟩ GNDs, consistent with the relative slip activity involved in pre-straining. The spatially resolved crystallographic GND distributions within the 3D microstructures are used to instantiate a microstructure model for forward modeling deformation simulations by a dislocation density hardening elasto-viscoplastic fast Fourier transform framework. Coarsening the voxel resolution during the initial microstructure construction procedure is shown to strongly impact both the magnitude and spatial distribution of the GNDs and in turn the forward deformation response of the pre-strained material. This study indicates that the voxel resolution desired when transferring from measured to model microstructures need not only be proportionally scaled with the microstructure but also sufficiently fine to capture the subgranular orientation gradients that may already be present in the material.

}, author = {Witzen, Wyatt A and Lamb, James D and Arul Kumar, Mariyappan and Echlin, McLean P and Pollock, Tresa M and Beyerlein, Irene J} } @article {2316, title = {On the role of geometrically necessary dislocations in void formation and growth in response to shock loading conditions in wrought and additively manufactured Ta}, journal = {J. Mater. Res. Technol.}, volume = {31}, year = {2024}, pages = {3035{\textendash}3049}, author = {Lamb, James D and Mullin, Kaitlyn M and Christodoulou, Paul G and Witzen, Wyatt A and Echlin, McLean P and Beyerlein, Irene J and Pollock, Tresa M} } @article {2351, title = {Role of microstructure on the development of local orientation gradients in polycrystals}, journal = {J. Mater. Res. Technol.}, volume = {33}, year = {2024}, pages = {168{\textendash}179}, author = {Ahmadikia, Behnam and Shadle, Dalton and Stinville, Jean-Charles and Nygren, Kelly E and Kumar, M Arul and Pollock, Tresa M and Miller, Matthew P and Beyerlein, Irene J} } @inbook {2331, title = {Solidification and crack defect formation on the single melt track scale for high $$\textbackslashupgamma ^\textbackslashprime $$ CoNi-base superalloy variants}, booktitle = {The Minerals, Metals \& Materials Series}, series = {The minerals, metals \& materials series}, year = {2024}, pages = {948{\textendash}957}, publisher = {Springer Nature Switzerland}, organization = {Springer Nature Switzerland}, address = {Cham}, author = {Raeker, Evan B and Pusch, Kira M and Mullin, Kaitlyn M and Lamb, James D and Zhou, Ning and Forsik, Stephane A J and Dicus, Austin D and Kirka, Michael M and Pollock, Tresa M} } @article {2276, title = {Solute-solute interactions in dilute Nb-X-O alloys from first principles}, journal = {Acta Mater.}, volume = {266}, year = {2024}, pages = {119621}, author = {Reynolds, Colleen and Pollock, Tresa M and Van der Ven, Anton} } @article {2356, title = {On the stability of coherent HfRu- and ZrRu-B2 precipitates in Nb-based alloys}, journal = {Mater. Des.}, volume = {247}, year = {2024}, pages = {113385}, author = {Frey, Carolina and Neuman, Benjamin and Mullin, Kaitlyn and Botros, Anthony and Lamb, James and Holgate, Collin S and Kube, Sebastian A and Pollock, Tresa M} } @article {2281, title = {Surface{\textendash}-subsurface grain structure relationships}, journal = {Acta Mater.}, volume = {266}, year = {2024}, pages = {119660}, author = {Hestroffer, Jonathan M and Stinville, Jean-Charles and Charpagne, Marie-agathe and Miller, Matthew P and Pollock, Tresa M and Beyerlein, Irene J} } @article {2326, title = {Thermal and elastic properties of an A2/B2 refractory high entropy superalloy and its constituent phases}, journal = {Metall. Mater. Trans. A}, volume = {55}, year = {2024}, pages = {2704{\textendash}2717}, author = {Senkov, Oleg N and Kube, Sebastian A and Drazin, John W and Soni, Vishal and Miracle, Daniel B and Butler, Todd M and Pollock, Tresa M and Banerjee, Rajarshi} } @article {2306, title = {Toward reliable ad-hoc scientific information extraction: A case study on two materials datasets}, year = {2024}, abstract = {

We explore the ability of GPT-4 to perform ad-hoc schema based information extraction from scientific literature. We assess specifically whether it can, with a basic prompting approach, replicate two existing material science datasets, given the manuscripts from which they were originally manually extracted. We employ materials scientists to perform a detailed manual error analysis to assess where the model struggles to faithfully extract the desired information, and draw on their insights to suggest research directions to address this broadly important task.

}, author = {Ghosh, Satanu and Brodnik, Neal R and Frey, Carolina and Holgate, Collin and Pollock, Tresa M and Daly, Samantha and Carton, Samuel} } @article {2271, title = {Transpiration cooling of a porous Nb-based alloy in high heat flux conditions}, journal = {Int. J. Therm. Sci.}, volume = {196}, year = {2024}, pages = {108758}, author = {Mullin, Kaitlyn M and Martin, John H and Roper, Christopher S and Levi, Carlos G and Pollock, Tresa M} } @article {2321, title = {Understanding the influence of boron in additively manufactured GammaPrint\textregistered-700 CoNi-based superalloy}, journal = {Addit. Manuf.}, volume = {92}, year = {2024}, pages = {104370}, author = {Ren, Qing-Qiang and Raeker, Evan B and Pusch, Kira M and Pollock, Tresa M and Forsik, Stephane A J and Zhou, Ning and Dicus, Austin D and Kirka, Michael M and Poplawsky, Jonathan D} } @article {1341, title = {Low Cycle Fatigue of Single Crystal γ'-containing Co-based Superalloys at 750 {\textdegree}C}, journal = {Metallurgical and Materials Transactions A}, volume = {51}, year = {2020}, pages = {200{\textendash}213}, abstract = {

A new class of \γ\′-containing Co-based superalloys that are promising for high temperature applications has been investigated under cyclic loading conditions. A series of single crystal variants of these Co-based superalloys have been cyclically loaded above their elastic limit at 750 \°C in air to study their behavior in the low cycle regime. Interrupted testing was performed to observe the early stages of fatigue failure. Optical microscopy, scanning electron microscopy, and transmission electron microscopy were used to characterize post-mortem specimens. Fatigue failure occurred due to surface cracks that developed during the early stages of cycling in the aluminide-coated sample gauge sections. Growth of these surface cracks into the substrate was associated with extensive oxidation and intermetallic phase precipitation, which accelerated crack propagation as compared to Ni-based superalloys. These observations suggest that improvements in the oxidation resistance and high temperature strength of \γ\′-containing Co-based superalloys will enhance their fatigue behavior.

}, issn = {1543-1940}, doi = {10.1007/s11661-019-05508-2}, url = {https://doi.org/10.1007/s11661-019-05508-2}, author = {Murray, Sean P and Stinville, Jean-Charles and Callahan, Patrick G and Rhein, Robert K and Pollock, Tresa M} } @article {1311, title = {Elastic Properties of Novel Co- and CoNi-Based Superalloys Determined through Bayesian Inference and Resonant Ultrasound Spectroscopy}, journal = {Metallurgical and Materials Transactions A}, volume = {49A}, year = {2018}, month = {06/2018}, pages = {2324{\textendash}2339}, issn = {1543-1940}, doi = {10.1007/s11661-018-4575-6}, url = {https://doi.org/10.1007/s11661-018-4575-6}, author = {Goodlet, Brent R and Mills, Leah and Bales, Ben and Charpagne, Marie-agathe and Murray, Sean P and Lenthe, William C and Petzold, Linda and Pollock, Tresa M} } @article {1181, title = {Thermoelectric performance and the role of anti-site disorder in the 24-electron Heusler TiFe2Sn}, journal = {Journal of Physics: Condensed Matter}, volume = {29}, year = {2017}, month = {Apr}, pages = {405702}, doi = {10.1088/1361-648x/aa81e7}, author = {Buffon, Malinda L C and Laurita, Geneva and Lamontagne, Leo and Levin, Emily E and Mooraj, Shahryar and Lloyd, Demetrious L and White, Natalie and Pollock, Tresa M and Seshadri, Ram} } @article {pollock2016alloy, title = {Alloy design for aircraft engines}, journal = {Nature Materials}, volume = {15}, number = {8}, year = {2016}, pages = {809{\textendash}815}, publisher = {Nature Research}, author = {Pollock, Tresa M} } @article {jorgensen2016bond, title = {Bond coatings with high rumpling resistance: Design and characterization}, journal = {Surface and Coatings Technology}, volume = {300}, year = {2016}, pages = {25{\textendash}34}, publisher = {Elsevier}, author = {Jorgensen, David J and Suzuki, Akane and Lipkin, Don M and Pollock, Tresa M} } @article {buffon2016enhancement, title = {Enhancement of thermoelectric properties in the Nb{\textendash}Co{\textendash}Sn half-Heusler/Heusler system through spontaneous inclusion of a coherent second phase}, journal = {Journal of Applied Physics}, volume = {120}, number = {7}, year = {2016}, pages = {075104}, publisher = {AIP Publishing}, author = {Buffon, Malinda LC and Laurita, Geneva and Verma, Nisha and Lamontagne, Leo and Ghadbeigi, Leila and Lloyd, Demetrious L and Sparks, Taylor D and Pollock, Tresa M and Seshadri, Ram} } @article {pebley2016exchange, title = {Exchange bias and spin glass behavior in biphasic NiFe 2 O 4/NiO thin films}, journal = {Journal of Magnetism and Magnetic Materials}, year = {2016}, publisher = {North-Holland}, author = {Pebley, Andrew C and Fuks, Preston E and Pollock, Tresa M and Gordon, Michael J} } @article {rettberg2016growth, title = {Growth Stresses in Thermally Grown Oxides on Nickel-Based Single-Crystal Alloys}, journal = {Metallurgical and Materials Transactions A}, volume = {47}, number = {3}, year = {2016}, pages = {1132{\textendash}1142}, publisher = {Springer US}, author = {Rettberg, Luke H and Laux, Britta and He, Ming Y and Hovis, David and Heuer, Arthur H and Pollock, Tresa M} } @article {echlin2016incipient, title = {Incipient slip and long range plastic strain localization in microtextured Ti-6Al-4V titanium}, journal = {Acta Materialia}, volume = {114}, year = {2016}, pages = {164{\textendash}175}, publisher = {Pergamon}, author = {Echlin, McLean P and Stinville, Jean Charles and Miller, Victoria M and Lenthe, William C and Pollock, Tresa M} } @article {shishvan2016interfacial, title = {Interfacial diffusion in high-temperature deformation of composites: a discrete dislocation plasticity investigation}, journal = {Journal of the Mechanics and Physics of Solids}, year = {2016}, publisher = {Pergamon}, author = {Shishvan, Siamak S and Pollock, Tresa M and McMeeking, Robert M and Deshpande, Vikram S} } @article {douglas2016magnetic, title = {Magnetic hardening and antiferromagnetic/ferromagnetic phase coexistence in Mn 1- x Fe x Ru 2 Sn Heusler solid solutions}, journal = {Physical Review B}, volume = {94}, number = {9}, year = {2016}, pages = {094412}, publisher = {American Physical Society}, author = {Douglas, Jason E and Levin, Emily E and Pollock, Tresa M and Castillo, Juan C and Adler, Peter and Felser, Claudia and Kr{\"a}mer, Stephan and Page, Katharine L and Seshadri, Ram} } @article {texier2016microstructural, title = {Microstructural features controlling the variability in low-cycle fatigue properties of alloy Inconel 718DA at intermediate temperature}, journal = {Metallurgical and Materials Transactions A}, volume = {47}, number = {3}, year = {2016}, pages = {1096{\textendash}1109}, publisher = {Springer US}, author = {Texier, Damien and G{\'o}mez, Ana Casanova and Pierret, St{\'e}phane and Franchet, Jean-Michel and Pollock, Tresa M and Villechaise, Patrick and Cormier, Jonathan} } @article {berman2016microstructure, title = {Microstructure and Texture Through Thixomolding and Thermomechanical Processing and the Role of Mg17Al12 Particles}, journal = {Metallurgical and Materials Transactions A}, volume = {47}, number = {6}, year = {2016}, pages = {3125{\textendash}3136}, publisher = {Springer US}, author = {Berman, Tracy D and Pollock, Tresa M and Jones, J Wayne} } @article {verma2016microstructure, title = {Microstructure Evolution of Biphasic TiNi1+ x Sn Thermoelectric Materials}, journal = {Metallurgical and Materials Transactions A}, year = {2016}, pages = {1{\textendash}12}, publisher = {Springer US}, author = {Verma, Nisha and Douglas, Jason E and Kr{\"a}mer, Stephan and Pollock, Tresa M and Seshadri, Ram and Levi, Carlos G} } @article {lenthe2016prediction, title = {Prediction of Fatigue-Initiating Twin Boundaries in Polycrystalline Nickel Superalloys Informed by TriBeam Tomography}, journal = {Microscopy and Microanalysis}, volume = {22}, number = {S3}, year = {2016}, pages = {1732{\textendash}1733}, publisher = {Cambridge University Press}, author = {Lenthe, William C and Stinville, Jean-Charles and Echlin, McLean P and Pollock, Tresa M} } @article {miller2016prediction, title = {Prediction of the plastic anisotropy of magnesium alloys with synthetic textures and implications for the effect of texture on formability}, journal = {Materials Science and Engineering: A}, volume = {675}, year = {2016}, pages = {345{\textendash}360}, publisher = {Elsevier}, author = {Miller, Victoria M and Berman, Tracy D and Beyerlein, Irene J and Jones, J Wayne and Pollock, Tresa M} } @article {miller2016recrystallization, title = {Recrystallization and the Development of Abnormally Large Grains After Small Strain Deformation in a Polycrystalline Nickel-Based Superalloy}, journal = {Metallurgical and Materials Transactions A}, volume = {47}, number = {4}, year = {2016}, pages = {1566{\textendash}1574}, publisher = {Springer US}, author = {Miller, Victoria M and Johnson, Anthony E and Torbet, Chris J and Pollock, Tresa M} } @article {nizolek2016tensile, title = {Tensile behavior and flow stress anisotropy of accumulative roll bonded Cu-Nb nanolaminates}, journal = {Applied Physics Letters}, volume = {108}, number = {5}, year = {2016}, pages = {051903}, publisher = {AIP Publishing}, author = {Nizolek, Thomas and Beyerlein, Irene J and Mara, Nathan A and Avallone, Jaclyn T and Pollock, Tresa M} } @article {miller2016texture, title = {Texture Modification in a Magnesium-Aluminum-Calcium Alloy During Uniaxial Compression}, journal = {Metallurgical and Materials Transactions A}, volume = {47}, number = {4}, year = {2016}, pages = {1854{\textendash}1864}, publisher = {Springer US}, author = {Miller, Victoria M and Pollock, Tresa M} } @article {jackson2016thermal, title = {Thermal expansion behavior of new Co-based alloys and implications for coatings}, journal = {Surface and Coatings Technology}, volume = {289}, year = {2016}, pages = {61{\textendash}68}, publisher = {Elsevier}, author = {Jackson, R Wesley and Titus, Michael S and Begley, Matthew R and Pollock, Tresa M} } @article {meher2016understanding, title = {Understanding of Inverse Coarsening of $\gamma${\textquoteright}precipitates in Ni-base Superalloys}, journal = {Microscopy and Microanalysis}, volume = {22}, number = {S3}, year = {2016}, pages = {1258{\textendash}1259}, publisher = {Cambridge University Press}, author = {Meher, Subhashish and Aagesen, Larry K and Carroll, Laura J and Carroll, Mark C and Pollock, Tresa M} } @article {titus2015creep, title = {Creep-induced planar defects in L1 2-containing Co-and CoNi-base single-crystal superalloys}, journal = {Acta Materialia}, volume = {82}, year = {2015}, pages = {530{\textendash}539}, publisher = {Pergamon}, author = {Titus, Michael S and Eggeler, Yolita M and Suzuki, Akane and Pollock, Tresa M} } @article {titus2015dislocation, title = {Dislocation injection in strontium titanate by femtosecond laser pulses}, journal = {Journal of Applied Physics}, volume = {118}, number = {7}, year = {2015}, pages = {075901}, publisher = {AIP Publishing}, author = {Titus, Michael S and Echlin, McLean P and Gumbsch, Peter and Pollock, Tresa M} } @article {jorgensen2015dynamic, title = {Dynamic response of thin films on substrates subjected to femtosecond laser pulses}, journal = {Acta Materialia}, volume = {84}, year = {2015}, pages = {136{\textendash}144}, publisher = {Pergamon}, author = {Jorgensen, David J and Pollock, Tresa M and Begley, Matthew R} } @article {nizolek2015enhanced, title = {Enhanced plasticity via kinking in cubic metallic nanolaminates}, journal = {Advanced Engineering Materials}, volume = {17}, number = {6}, year = {2015}, pages = {781{\textendash}785}, author = {Nizolek, Thomas and Mara, Nathan A and Beyerlein, Irene J and Avallone, Jaclyn T and Pollock, Tresa M} } @article {jorgensen2015femtosecond, title = {Femtosecond laser ablation and nanoparticle formation in intermetallic NiAl}, journal = {Applied Surface Science}, volume = {353}, year = {2015}, pages = {700{\textendash}707}, publisher = {North-Holland}, author = {Jorgensen, David J and Titus, Michael S and Pollock, Tresa M} } @article {titus2015high, title = {High resolution energy dispersive spectroscopy mapping of planar defects in L1 2-containing co-base superalloys}, journal = {Acta Materialia}, volume = {89}, year = {2015}, pages = {423{\textendash}437}, publisher = {Pergamon}, author = {Titus, Michael S and Mottura, Alessandro and Viswanathan, G Babu and Suzuki, Akane and Mills, Michael J and Pollock, Tresa M} } @article {suzuki2015l12, title = {L12-Strengthened Cobalt-Base Superalloys}, journal = {Annual Review of Materials Research}, volume = {45}, year = {2015}, pages = {345{\textendash}368}, publisher = {Annual Reviews}, author = {Suzuki, Akane and Inui, Haruyuki and Pollock, Tresa M} } @article {van2015pt, title = {A Pt-modified Ni-base superalloy with high temperature precipitate stability}, journal = {Materials Science and Engineering: A}, volume = {639}, year = {2015}, pages = {747{\textendash}754}, publisher = {Elsevier}, author = {Van Sluytman, Jason S and Moceri, Charles J and Pollock, Tresa M} } @article {lenthe2015quantitative, title = {Quantitative voxel-to-voxel comparison of TriBeam and DCT strontium titanate three-dimensional data sets}, journal = {Journal of Applied Crystallography}, volume = {48}, number = {4}, year = {2015}, pages = {1034{\textendash}1046}, publisher = {International Union of Crystallography}, author = {Lenthe, William C and Echlin, MP and Trenkle, Andreas and Syha, Melanie and Gumbsch, Peter and Pollock, Tresa M} } @article {rhein2015role, title = {Role of vibrational and configurational excitations in stabilizing the L 1 2 structure in Co-rich Co-Al-W alloys}, journal = {Physical Review B}, volume = {92}, number = {17}, year = {2015}, pages = {174117}, publisher = {American Physical Society}, author = {Rhein, Robert K and Dodge, Philip C and Chen, Min-Hua and Titus, Michael S and Pollock, Tresa M and Van der Ven, Anton} } @article {ardeljan2015study, title = {A study of microstructure-driven strain localizations in two-phase polycrystalline HCP/BCC composites using a multi-scale model}, journal = {International Journal of Plasticity}, volume = {74}, year = {2015}, pages = {35{\textendash}57}, publisher = {Pergamon}, author = {Ardeljan, Milan and Knezevic, Marko and Nizolek, Thomas and Beyerlein, Irene J and Mara, Nathan A and Pollock, Tresa M} } @article {berman2015texture, title = {Texture, Second-Phase Particles, and the Anisotropy of Deformation Behavior in TTMP AZ61}, journal = {Metallurgical and Materials Transactions A}, volume = {46}, number = {7}, year = {2015}, pages = {2986{\textendash}2998}, publisher = {Springer US}, author = {Berman, Tracy D and Pollock, Tresa M and Jones, J Wayne} } @article {douglas2015three, title = {Three-dimensional multimodal imaging and analysis of biphasic microstructure in a Ti{\textendash}Ni{\textendash}Sn thermoelectric material}, journal = {APL Materials}, volume = {3}, number = {9}, year = {2015}, pages = {096107}, publisher = {AIP Publishing}, author = {Douglas, Jason E and Echlin, McLean P and Lenthe, William C and Seshadri, Ram and Pollock, Tresa M} } @article {echlin2015tribeam, title = {The TriBeam system: Femtosecond laser ablation in situ SEM}, journal = {Materials Characterization}, volume = {100}, year = {2015}, pages = {1{\textendash}12}, publisher = {Elsevier}, author = {Echlin, McLean P and Straw, Marcus and Randolph, Steven and Filevich, Jorge and Pollock, Tresa M} } @article {adharapurapu2014combinatorial, title = {A combinatorial investigation of palladium and platinum additions to $\beta$-NiAl overlay coatings}, journal = {Acta Materialia}, volume = {77}, year = {2014}, pages = {379{\textendash}393}, publisher = {Pergamon}, author = {Adharapurapu, Raghavendra R and Zhu, Jun and Dheeradhada, Voramon S and Lipkin, Don M and Pollock, Tresa M} } @article {eggeler2014creep, title = {Creep deformation-induced antiphase boundaries in L1 2-containing single-crystal cobalt-base superalloys}, journal = {Acta Materialia}, volume = {77}, year = {2014}, pages = {352{\textendash}359}, publisher = {Pergamon}, author = {Eggeler, Yolita M and Titus, Michael S and Suzuki, Akane and Pollock, Tresa M} } @article {miller2014effect, title = {The effect of processing conditions on heat transfer during directional solidification via the Bridgman and liquid metal cooling processes}, journal = {Metallurgical and materials transactions A}, volume = {45}, number = {1}, year = {2014}, pages = {411{\textendash}425}, publisher = {Springer US}, author = {Miller, Jonathan D and Pollock, Tresa M} } @article {adharapurapu2014effective, title = {Effective Hf-Pd Co-doped $\beta$-NiAl (Cr) coatings for single-crystal superalloys}, journal = {Acta Materialia}, volume = {76}, year = {2014}, pages = {449{\textendash}462}, publisher = {Pergamon}, author = {Adharapurapu, Raghavendra R and Zhu, Jun and Dheeradhada, Voramon S and Lipkin, Don M and Pollock, Tresa M} } @article {handwerker2014emerging, title = {Emerging science and research opportunities for metals and metallic nanostructures}, journal = {Jom}, volume = {66}, number = {7}, year = {2014}, pages = {1321{\textendash}1341}, publisher = {Springer US}, author = {Handwerker, Carol A and Pollock, Tresa M} } @article {iyer2014energetics, title = {Energetics and nucleation of point defects in aluminum under extreme tensile hydrostatic stresses}, journal = {Physical Review B}, volume = {89}, number = {1}, year = {2014}, pages = {014108}, publisher = {American Physical Society}, author = {Iyer, Mrinal and Gavini, Vikram and Pollock, Tresa M} } @article {pebley2014microplasma, title = {Microplasma-Based Growth of Biphasic NiFe2O4/NiO Nanogranular Films for Exchange Bias Applications}, journal = {Chemistry of Materials}, volume = {26}, number = {20}, year = {2014}, pages = {6026{\textendash}6032}, publisher = {American Chemical Society}, author = {Pebley, Andrew C and Peek, Alex and Pollock, Tresa M and Gordon, Michael J} } @article {douglas2014nanoscale, title = {Nanoscale structural heterogeneity in Ni-rich half-Heusler TiNiSn}, journal = {Journal of Applied Physics}, volume = {116}, number = {16}, year = {2014}, pages = {163514}, publisher = {AIP Publishing}, author = {Douglas, Jason E and Chater, Philip A and Brown, Craig M and Pollock, Tresa M and Seshadri, Ram} } @article {douglas2014phase, title = {Phase stability and property evolution of biphasic Ti{\textendash}Ni{\textendash}Sn alloys for use in thermoelectric applications}, journal = {Journal of Applied Physics}, volume = {115}, number = {4}, year = {2014}, pages = {043720}, publisher = {AIP Publishing}, author = {Douglas, Jason E and Birkel, Christina S and Verma, Nisha and Miller, Victoria M and Miao, Mao-Sheng and Stucky, Galen D and Pollock, Tresa M and Seshadri, Ram} } @article {titus2014sub, title = {Sub-nanometer Resolution Chemi-STEM EDS Mapping of Superlattice Intrinsic Stacking Faults in Co-based Superalloys}, journal = {Microscopy and Microanalysis}, volume = {20}, number = {S3}, year = {2014}, pages = {1028{\textendash}1029}, publisher = {Cambridge University Press}, author = {Titus, Michael S and Suzuki, Akane and Mills, Michael J and Pollock, Tresa M} } @article {knezevic2014texture, title = {Texture evolution in two-phase Zr/Nb lamellar composites during accumulative roll bonding}, journal = {International Journal of Plasticity}, volume = {57}, year = {2014}, pages = {16{\textendash}28}, publisher = {Pergamon}, author = {Knezevic, Marko and Nizolek, Thomas and Ardeljan, Milan and Beyerlein, Irene J and Mara, Nathan A and Pollock, Tresa M} } @article {echlin2014three, title = {Three-dimensional characterization of the permeability of W{\textendash}Cu composites using a new {\textquotedblleft}TriBeam{\textquotedblright} technique}, journal = {Acta Materialia}, volume = {64}, year = {2014}, pages = {307{\textendash}315}, publisher = {Pergamon}, author = {Echlin, McLean P and Mottura, Alessandro and Wang, Michael and Mignone, Paul J and Riley, Daniel P and Franks, George V and Pollock, Tresa M} } @article {echlin2014three, title = {Three-dimensional sampling of material structure for property modeling and design}, journal = {Integrating Materials and Manufacturing Innovation}, volume = {3}, number = {1}, year = {2014}, pages = {1}, publisher = {Springer Berlin Heidelberg}, author = {Echlin, McLean P and Lenthe, William C and Pollock, Tresa M} } @article {knezevic2013anomalous, title = {Anomalous basal slip activity in zirconium under high-strain deformation}, journal = {Materials Research Letters}, volume = {1}, number = {3}, year = {2013}, pages = {133{\textendash}140}, publisher = {Taylor \& Francis}, author = {Knezevic, Marko and Beyerlein, Irene J and Nizolek, Thomas and Mara, Nathan A and Pollock, Tresa M} } @article {godlewski2013effect, title = {The effect of aging on the relaxation of residual stress in cast aluminum}, journal = {Metallurgical and Materials Transactions A}, volume = {44}, number = {10}, year = {2013}, pages = {4809{\textendash}4818}, publisher = {Springer US}, author = {Godlewski, Larry A and Su, Xuming and Pollock, Tresa M and Allison, John E} } @article {pollock2013feedback, title = {The feedback loop between theory, simulation and experiment for plasticity and property modeling}, journal = {Current Opinion in Solid State and Materials Science}, volume = {17}, number = {1}, year = {2013}, pages = {10{\textendash}18}, publisher = {Elsevier}, author = {Pollock, Tresa M and LeSar, Richard} } @article {birkel2013improving, title = {Improving the thermoelectric properties of half-Heusler TiNiSn through inclusion of a second full-Heusler phase: microwave preparation and spark plasma sintering of TiNi 1+ x Sn}, journal = {Physical Chemistry Chemical Physics}, volume = {15}, number = {18}, year = {2013}, pages = {6990{\textendash}6997}, publisher = {Royal Society of Chemistry}, author = {Birkel, Christina S and Douglas, Jason E and Lettiere, Bethany R and Seward, Gareth and Verma, Nisha and Zhang, Yichi and Pollock, Tresa M and Seshadri, Ram and Stucky, Galen D} } @article {birkel2013influence, title = {Influence of Ni nanoparticle addition and spark plasma sintering on the TiNiSn{\textendash}Ni system: structure, microstructure, and thermoelectric properties}, journal = {Solid State Sciences}, volume = {26}, year = {2013}, pages = {16{\textendash}22}, publisher = {Elsevier Masson}, author = {Birkel, Christina S and Douglas, Jason E and Lettiere, Bethany R and Seward, Gareth and Zhang, Yichi and Pollock, Tresa M and Seshadri, Ram and Stucky, Galen D} } @article {lenaburg2013outcomes, title = {Outcomes from research collaborations: What are they and how long do they take?}, journal = {MRS bulletin}, volume = {38}, number = {07}, year = {2013}, pages = {526{\textendash}528}, publisher = {Cambridge Univ Press}, author = {Lenaburg, Lubella A and Sciaky, Elizabeth S and Pollock, Tresa M} } @article {echlin2013statistical, title = {A statistical sampling approach for measurement of fracture toughness parameters in a 4330 steel by 3-D femtosecond laser-based tomography}, journal = {Acta Materialia}, volume = {61}, number = {15}, year = {2013}, pages = {5791{\textendash}5799}, publisher = {Elsevier}, author = {Echlin, McLean P and Pollock, Tresa M} } @article {mottura2012alloying, title = {Alloying Effects in the $\gamma$' Phase of Co-Based Superalloys}, journal = {Superalloys 2012}, year = {2012}, pages = {683{\textendash}693}, publisher = {John Wiley \& Sons, Inc.}, author = {Mottura, Alessandro and Janotti, Anderson and Pollock, Tresa M} } @article {titus2012creep, title = {Creep and directional coarsening in single crystals of new $\gamma${\textendash}$\gamma$' cobalt-base alloys}, journal = {Scripta Materialia}, volume = {66}, number = {8}, year = {2012}, pages = {574{\textendash}577}, publisher = {Elsevier}, author = {Titus, Michael S and Suzuki, Akane and Pollock, Tresa M} } @article {terbush2012dependence, title = {The dependence of creep behavior on elemental partitioning in Mg-5Al-3Ca-xSn alloys}, journal = {Metallurgical and Materials Transactions A}, volume = {43}, number = {9}, year = {2012}, pages = {3120{\textendash}3134}, publisher = {Springer US}, author = {TerBush, Jessica R and Chen, Olivia H and Jones, J Wayne and Pollock, Tresa M} } @article {miller2012development, title = {Development and Application of an Optimization Protocol for Directional Solidification: Integrating Fundamental Theory, Experimentation and Modeling Tools}, journal = {Superalloys 2012}, year = {2012}, pages = {653{\textendash}662}, publisher = {John Wiley \& Sons, Inc.}, author = {Miller, Jonathan D and Pollock, Tresa M} } @article {douglas2012enhanced, title = {Enhanced thermoelectric properties of bulk TiNiSn via formation of a TiNi2Sn second phase}, journal = {Applied Physics Letters}, volume = {101}, number = {18}, year = {2012}, pages = {183902}, publisher = {AIP Publishing}, author = {Douglas, Jason E and Birkel, Christina S and Miao, Mao-Sheng and Torbet, Chris J and Stucky, Galen D and Pollock, Tresa M and Seshadri, Ram} } @article {mottura2012first, title = {A first-principles study of the effect of Ta on the superlattice intrinsic stacking fault energy of L1 2-Co 3 (Al, W)}, journal = {Intermetallics}, volume = {28}, year = {2012}, pages = {138{\textendash}143}, publisher = {Elsevier}, author = {Mottura, Alessandro and Janotti, Anderson and Pollock, Tresa M} } @article {titus2012high, title = {High Temperature Creep of New L12 Containing Cobalt-Base Superalloys}, journal = {Superalloys 2012}, year = {2012}, pages = {823{\textendash}832}, publisher = {Wiley Online Library}, author = {Titus, Michael S and Suzuki, Akane and Pollock, Tresa M} } @article {miao2012microstructural, title = {Microstructural extremes and the transition from fatigue crack initiation to small crack growth in a polycrystalline nickel-base superalloy}, journal = {Acta Materialia}, volume = {60}, number = {6}, year = {2012}, pages = {2840{\textendash}2854}, publisher = {Pergamon}, author = {Miao, Jiashi and Pollock, Tresa M and Jones, J Wayne} } @article {echlin2012new, title = {A new TriBeam system for three-dimensional multimodal materials analysis}, journal = {Review of Scientific Instruments}, volume = {83}, number = {2}, year = {2012}, pages = {023701}, publisher = {AIP Publishing}, author = {Echlin, McLean P and Mottura, Alessandro and Torbet, Christopher J and Pollock, Tresa M} } @article {brundidge2012processing, title = {Processing to fatigue properties: benefits of high gradient casting for single crystal airfoils}, journal = {Superalloys 2012}, year = {2012}, pages = {379{\textendash}385}, publisher = {John Wiley \& Sons, Inc.}, author = {Brundidge, Clinique L and Pollock, Tresa M} } @article {adharapurapu2011carburization, title = {Carburization of W-and Re-rich Ni-based alloys in impure helium at 1000{\textdegree} C}, journal = {Corrosion Science}, volume = {53}, number = {1}, year = {2011}, pages = {388{\textendash}398}, publisher = {Elsevier}, author = {Adharapurapu, Raghavendra R and Kumar, Deepak and Zhu, Jun and Pollock, Tresa M} } @article {adharapurapu2011chromia, title = {Chromia-Assisted Decarburization of W-Rich Ni-Based Alloys in Impure Helium at 1273 K (1000{\textdegree} C)}, journal = {Metallurgical and Materials Transactions A}, volume = {42}, number = {5}, year = {2011}, pages = {1229{\textendash}1244}, publisher = {Springer}, author = {Adharapurapu, Raghavendra R and Kumar, Deepak and Zhu, Jun and Torbet, Christopher J and Was, Gary S and Pollock, Tresa M} } @article {terbush2011creep, title = {Creep and Elemental Partitioning Behavior of Mg-Al-Ca-Sn Alloys with the Addition of Sr}, journal = {Magnesium Technology 2011}, year = {2011}, pages = {215{\textendash}222}, publisher = {John Wiley \& Sons, Inc.}, author = {TerBush, Jessica R and Chen, Olivia H and Jones, J Wayne and Pollock, Tresa M} } @article {kumar2011high, title = {High-Temperature Oxidation of Alloy 617 in Helium Containing Part-Per-Million Levels of CO and CO2 as Impurities}, journal = {Metallurgical and Materials Transactions A}, volume = {42}, number = {5}, year = {2011}, pages = {1245{\textendash}1265}, publisher = {Springer}, author = {Kumar, Deepak and Adharapurapu, Raghavendra R and Pollock, Tresa M and Was, Gary S} } @article {perez2011high, title = {High-temperature performance of actively cooled vapor phase strengthened nickel-based thermostructural panels}, journal = {AIAA journal}, volume = {49}, number = {5}, year = {2011}, pages = {1080{\textendash}1086}, author = {P{\'e}rez-Bergquist, Sara and Vermaak, Natasha and Pollock, Tresa M} } @article {kumar2011situ, title = {In situ damage assessment in a cast magnesium alloy during very high cycle fatigue}, journal = {Scripta Materialia}, volume = {64}, number = {1}, year = {2011}, pages = {65{\textendash}68}, publisher = {Elsevier}, author = {Kumar, Anish and Adharapurapu, Raghavendra R and Jones, J Wayne and Pollock, Tresa M} } @article {kumar2011mapping, title = {Mapping of femtosecond laser-induced collateral damage by electron backscatter diffraction}, journal = {Journal of Applied Physics}, volume = {110}, number = {8}, year = {2011}, pages = {083114}, publisher = {AIP Publishing}, author = {Kumar, Anish and Pollock, Tresa M} } @article {echlin2011new, title = {A New Femtosecond Laser-Based Tomography Technique for Multiphase Materials}, journal = {Advanced Materials}, volume = {23}, number = {20}, year = {2011}, pages = {2339{\textendash}2342}, publisher = {Wiley Online Library}, author = {Echlin, McLean P and Husseini, Naji S and Nees, John A and Pollock, Tresa M} } @article {pollock2011oxide, title = {Oxide-Assisted Degradation of Ni-Base Single Crystals During Cyclic Loading: the Role of Coatings}, journal = {Journal of the American Ceramic Society}, volume = {94}, number = {s1}, year = {2011}, publisher = {Blackwell Publishing Inc}, author = {Pollock, Tresa M and Laux, Britta and Brundidge, Clinique L and Suzuki, Akane and He, Ming Y} } @article {tsunekane2011single, title = {Single-crystal solidification of new Co{\textendash}Al{\textendash}W-base alloys}, journal = {Intermetallics}, volume = {19}, number = {5}, year = {2011}, pages = {636{\textendash}643}, publisher = {Elsevier}, author = {Tsunekane, Masafumi and Suzuki, Akane and Pollock, Tresa M} } @booklet {pollock20103d, title = {3D simulations for property determination via reconstructed microstructure in nickel-base superalloys.}, year = {2010}, publisher = {Sandia National Laboratories}, author = {Pollock, Tresa M and Thornton, Katsuyo and Rowenhorst, David J and Spowart, Jonathan E and Madison, Jonathan D} } @article {tu2010deformation, title = {Deformation and strain storage mechanisms during high-temperature compression of a powder metallurgy nickel-base superalloy}, journal = {Metallurgical and Materials Transactions A}, volume = {41}, number = {8}, year = {2010}, pages = {2002{\textendash}2009}, publisher = {Springer US}, author = {Tu, Wen J and Pollock, Tresa M} } @article {kumar2010situ, title = {In situ characterization of fatigue damage evolution in a cast Al alloy via nonlinear ultrasonic measurements}, journal = {Acta Materialia}, volume = {58}, number = {6}, year = {2010}, pages = {2143{\textendash}2154}, publisher = {Pergamon}, author = {Kumar, Anish and Torbet, Christopher J and Pollock, Tresa M and Jones, J Wayne} } @article {terbush2010partitioning, title = {Partitioning of Solute to the Primary $\alpha$-Mg Phase in Creep-Resistant Mg-Al-Ca{\textendash}Based Cast Alloys}, journal = {Metallurgical and Materials Transactions A}, volume = {41}, number = {9}, year = {2010}, pages = {2435{\textendash}2442}, publisher = {Springer}, author = {TerBush, Jessica R and Saddock, Nicholas D and Jones, J Wayne and Pollock, Tresa M} } @article {pollock2010weight, title = {Weight loss with magnesium alloys}, journal = {Science}, volume = {328}, number = {5981}, year = {2010}, pages = {986{\textendash}987}, publisher = {American Association for the Advancement of Science}, author = {Pollock, Tresa M} } @article {miao2009crystallographic, title = {Crystallographic fatigue crack initiation in nickel-based superalloy Ren{\'e} 88DT at elevated temperature}, journal = {Acta Materialia}, volume = {57}, number = {20}, year = {2009}, pages = {5964{\textendash}5974}, publisher = {Pergamon}, author = {Miao, Jiashi and Pollock, Tresa M and Jones, J Wayne} } @article {das2009femtosecond, title = {Femtosecond laser machining of cooling holes in thermal barrier coated CMSX4 superalloy}, journal = {Journal of Materials Processing Technology}, volume = {209}, number = {15}, year = {2009}, pages = {5661{\textendash}5668}, publisher = {Elsevier}, author = {Das, Dipak K and Pollock, Tresa M} } @article {kumar2009nonlinear, title = {Nonlinear ultrasonics for in situ damage detection during high frequency fatigue}, journal = {Journal of Applied Physics}, volume = {106}, number = {2}, year = {2009}, pages = {024904}, publisher = {AIP Publishing}, author = {Kumar, Anish and Torbet, Christopher J and Jones, J Wayne and Pollock, Tresa M} } @conference {van2009structure, title = {STRUCTURE REFINEMENT BY A LIQUID METAL COOLING DIRECTIONAL SOLIDIFICATION PROCESS FOR SINGLE CRYSTAL NICKEL-BASE SUPERALLOYS}, booktitle = {International Symposium on Liquid Metal Processing and Casting 2009 (LMPC 2009)}, year = {2009}, author = {Van Drasek, Denar and Wang, Brian and Pollock, Tresa M} } @conference {white2009time, title = {TIME DOMAIN TERAHERTZ NON-DESTRUCTIVE EVALUATION OF AEROTURBINE BLADE THERMAL BARRIER COATINGS}, booktitle = {REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION: Proceedings of the 35th Annual Review of Progress in Quantitative Nondestructive Evaluation}, volume = {1096}, number = {1}, year = {2009}, pages = {434{\textendash}439}, publisher = {AIP Publishing}, organization = {AIP Publishing}, author = {White, Jeffrey and Fichter, G and Chernovsky, A and Whitaker, John F and Das, D and Pollock, Tresa M and Zimdars, David} } @article {mcdonald2008approaching, title = {Approaching non-destructive surface chemical analysis of CMSX-4 superalloy with double-pulsed laser induced breakdown spectroscopy}, journal = {Spectrochimica Acta Part B: Atomic Spectroscopy}, volume = {63}, number = {5}, year = {2008}, pages = {561{\textendash}565}, publisher = {Elsevier}, author = {McDonald, Joel P and Das, Dipak K and Nees, John A and Pollock, Tresa M and Yalisove, Steven M} } @article {das2008detection, title = {Detection of a marker layer in a 7YSZ thermal barrier coating by femtosecond laser-induced breakdown spectroscopy}, journal = {Surface and Coatings Technology}, volume = {202}, number = {16}, year = {2008}, pages = {3940{\textendash}3946}, publisher = {Elsevier}, author = {Das, Dipak K and McDonald, Joel P and Levi, Carlos G and Yalisove, Steve M and Pollock, Tresa M} } @article {mcdonald2008femtosecond, title = {Femtosecond pulsed laser ablation dynamics and ablation morphology of nickel based superalloy CMSX-4}, journal = {Journal of Applied Physics}, volume = {103}, number = {9}, year = {2008}, pages = {093111}, publisher = {AIP Publishing}, author = {McDonald, Joel P and Ma, Shuwei and Pollock, Tresa M and Yalisove, Steven M and Nees, John A} } @article {das2008formation, title = {Formation of secondary reaction zones in diffusion aluminide-coated Ni-base single-crystal superalloys containing ruthenium}, journal = {Metallurgical and Materials Transactions A}, volume = {39}, number = {7}, year = {2008}, pages = {1647{\textendash}1657}, publisher = {Springer}, author = {Das, Dipak K and Murphy, Kenneth S and Ma, Shuwei and Pollock, Tresa M} } @article {suzuki2008high, title = {High-temperature strength and deformation of $\gamma$/$\gamma$' two-phase Co{\textendash}Al{\textendash}W-base alloys}, journal = {Acta Materialia}, volume = {56}, number = {6}, year = {2008}, pages = {1288{\textendash}1297}, publisher = {Elsevier}, author = {Suzuki, Akane and Pollock, Tresa M} } @article {kumah2008situ, title = {In Situ Imaging of High Cycle Fatigue Crack Growth in Single Crystal Nickel-Base Superalloys by Synchrotron X-Radiation}, journal = {Ann Arbor}, volume = {1001}, year = {2008}, pages = {48109}, author = {Kumah, Divine P and Clarke, Roy and Pollock, Tresa M and Jones, J Wayne} } @article {liu2008situ, title = {In situ imaging of high cycle fatigue crack growth in single crystal nickel-base superalloys by synchrotron X-radiation}, journal = {Journal of Engineering Materials and Technology}, volume = {130}, number = {2}, year = {2008}, pages = {021008}, publisher = {American Society of Mechanical Engineers}, author = {Liu, Liu and Husseini, Naji S and Torbet, Christopher J and Kumah, Divine P and Clarke, Roy and Pollock, Tresa M and Jones, J Wayne} } @article {husseini2008mapping, title = {Mapping single-crystal dendritic microstructure and defects in nickel-base superalloys with synchrotron radiation}, journal = {Acta Materialia}, volume = {56}, number = {17}, year = {2008}, pages = {4715{\textendash}4723}, publisher = {Pergamon}, author = {Husseini, Naji S and Kumah, Divine P and Jian, Z Yi and Torbet, Christopher J and Arms, Dohn A and Dufresne, Eric M and Pollock, Tresa M and Jones, J Wayne and Clarke, Roy} } @conference {white2008time, title = {Time-domain terahertz mapping of thickness and degradation of aircraft turbine blade thermal barrier coatings}, booktitle = {Conference on Lasers and Electro-Optics}, year = {2008}, pages = {CThN7}, publisher = {Optical Society of America}, organization = {Optical Society of America}, author = {White, Jeffrey and Fichter, G and Chernovsky, A and Zimdars, David A and Whitaker, John F and Das, D and Pollock, Tresa M} } @conference {cao2007compression, title = {COMPRESSION CREEP BEHAVIOR OF B 2 AL-NI-RU TERNARY ALLOYS}, booktitle = {Advanced Intermetallic-Based Alloys(MRS Symposium Proceedings Series Volume 980)}, volume = {980}, year = {2007}, pages = {45{\textendash}50}, author = {Cao, Fang and Pollock, Tresa M} } @conference {mcdonald2007dynamics, title = {Dynamics of Ultrafast Laser Induced Damage in Single Crystal Ni-Based Superalloy During Machining}, booktitle = {Advanced Intermetallic-Based Alloys(MRS Symposium Proceedings Series Volume 980)}, volume = {980}, year = {2007}, pages = {571{\textendash}576}, author = {McDonald, Joel P and Ma, Shuwei and Nees, John A and Pollock, Tresa M and Yalisove, Steven M} } @article {suzuki2007flow, title = {Flow stress anomalies in $\gamma$/$\gamma$' two-phase Co{\textendash}Al{\textendash}W-base alloys}, journal = {Scripta Materialia}, volume = {56}, number = {5}, year = {2007}, pages = {385{\textendash}388}, publisher = {Elsevier}, author = {Suzuki, Akane and DeNolf, Garret C and Pollock, Tresa M} } @conference {suzuki2007high, title = {High Temperature Strength of Co-based gamma/gamma{\textquoteright} Superalloys}, booktitle = {Advanced Intermetallic-Based Alloys(MRS Symposium Proceedings Series Volume 980)}, volume = {980}, year = {2007}, pages = {499{\textendash}504}, author = {Suzuki, Akane and DeNolf, Garret C and Pollock, Tresa M} } @booklet {saddock2007permanent, title = {Permanent Mold Casting and Creep Behavior of Mg-4 Al-4 X:(Ca, Ce, La, Sr) Alloys}, year = {2007}, publisher = {SAE Technical Paper}, author = {Saddock, Nicholas D and Suzuki, Akane and TerBush, Jessica R and Jones, J Wayne and Pollock, Tresa M and Zindel, Jake and Allison, John E} } @article {shyam2007small, title = {Small fatigue crack growth in metallic materials: a model and its application to engineering alloys}, journal = {Acta Materialia}, volume = {55}, number = {19}, year = {2007}, pages = {6606{\textendash}6616}, publisher = {Elsevier}, author = {Shyam, Amit and Allison, John E and Szczepanski, Christopher J and Pollock, Tresa M and Jones, J Wayne} } @conference {cao2006compression, title = {Compression Creep Behavior of B2 AL-Ni-Ru Ternary Alloys}, booktitle = {MRS Proceedings}, volume = {980}, year = {2006}, pages = {0980{\textendash}II01}, publisher = {Cambridge University Press}, organization = {Cambridge University Press}, author = {Cao, Fang and Pollock, Tresa M} } @conference {mcdonald2006dynamics, title = {Dynamics of Ultrafast Laser Induced Damage in Single Crystal Ni-Based Superalloy During Machining}, booktitle = {MRS Proceedings}, volume = {980}, year = {2006}, pages = {0980{\textendash}II05}, publisher = {Cambridge University Press}, organization = {Cambridge University Press}, author = {McDonald, Joel P and Ma, Shuwei and Nees, John A and Pollock, Tresa M and Yalisove, Steven M} } @article {cao2006experimental, title = {Experimental investigation and thermodynamic modelling of the Mg{\textendash}Al-rich region of the Mg{\textendash}Al{\textendash}Sr System}, journal = {Zeitschrift f{\"u}r Metallkunde}, volume = {97}, number = {4}, year = {2006}, pages = {422{\textendash}428}, publisher = {Carl Hanser Verlag}, author = {Cao, Hongbo and Zhu, Jun and Zhang, Chuan and Wu, Kaisheng and Saddock, Nicholas D and Jones, J Wayne and Pollock, Tresa M and Schmid-Fetzer, Rainer and Chang, Y Austin} } @conference {suzuki2006high, title = {High Temperature Strength of Co-based $\gamma$/$\gamma${\textquoteright}Superalloys}, booktitle = {MRS Proceedings}, volume = {980}, year = {2006}, pages = {0980{\textendash}II08}, publisher = {Cambridge University Press}, organization = {Cambridge University Press}, author = {Suzuki, Akane and DeNolf, Garret C and Pollock, Tresa M} } @article {nandy2006microstructure, title = {Microstructure and properties of blended Mg- Al alloys fabricated by semisolid processing}, journal = {Metallurgical and Materials Transactions A}, volume = {37}, number = {12}, year = {2006}, pages = {3725{\textendash}3736}, publisher = {Springer}, author = {Nandy, TK and Messing, Rebecca M and Jones, J Wayne and Pollock, Tresa M and Walukas, DM and Decker, RF} } @article {pollock2006nickel, title = {Nickel-based superalloys for advanced turbine engines: chemistry, microstructure and properties}, journal = {Journal of propulsion and power}, volume = {22}, number = {2}, year = {2006}, pages = {361{\textendash}374}, author = {Pollock, Tresa M and Tin, Sammy} } @article {suzuki2006phase, title = {Phase equilibria in the Mg-Al-Ca ternary system at 773 and 673 K}, journal = {Metallurgical and Materials Transactions A}, volume = {37}, number = {3}, year = {2006}, pages = {975{\textendash}983}, publisher = {Springer}, author = {Suzuki, Akane and Saddock, Nicholas D and Jones, J Wayne and Pollock, Tresa M} } @booklet {godlewski2006test, title = {A test method for quantifying residual stress due to heat treatment in metals}, year = {2006}, publisher = {SAE Technical Paper}, author = {Godlewski, Larry A and Su, Xuming and Allison, John E and Gustafson, Peter and Pollock, Tresa M} } @article {suzuki2005phase, title = {Phase Transformation and Creep of Mg-Al-Ca Based Die-Cast Alloys}, journal = {Essential Readings in Magnesium Technology}, year = {2005}, pages = {291{\textendash}296}, publisher = {John Wiley \& Sons, Inc.}, author = {Suzuki, Akane and Saddock, Nicholas D and Jones, J Wayne and Pollock, Tresa M} } @article {biery2003method, title = {A method for measuring microstructural-scale strains using a scanning electron microscope: applications to $\gamma$-titanium aluminides}, journal = {Metallurgical and Materials Transactions A}, volume = {34}, number = {10}, year = {2003}, pages = {2301{\textendash}2313}, publisher = {Springer-Verlag}, author = {Biery, Nicholas and De Graef, Marc and Pollock, Tresa M} } @article {gray2002strain, title = {Strain hardening}, journal = {Intermetallic Compounds-Principles and Practice: Progress, Volume 3}, year = {2002}, pages = {361{\textendash}377}, publisher = {John Wiley \& Sons, Ltd}, author = {Gray, George T and Pollock, Tresa M} } @article {biery2002use, title = {Use of Weibull statistics to quantify property variability in TiAl alloys}, journal = {Metallurgical and Materials Transactions A}, volume = {33}, number = {10}, year = {2002}, pages = {3127{\textendash}3136}, publisher = {Springer}, author = {Biery, Nicholas and De Graef, Marc and Beuth, Jack and Raban, Rafel and Elliott, Andrew and Pollock, Tresa M and AUSTIN, CURT} } @article {gilchrist2001cast, title = {Cast gamma titanium aluminides for low pressure turbine blades: a design case study for intermetallics}, journal = {Minerals, Metals and Materials Society/AIME, Structural Intermetallics 2001(USA),}, year = {2001}, pages = {3{\textendash}12}, author = {Gilchrist, Alan and Pollock, Tresa M} } @booklet {king2000nickel, title = {Nickel-based superalloys exhibiting minimal grain defects}, year = {2000}, note = {US Patent 6,096,141}, author = {King, Warren Tan and Pollock, Tresa M and Zemsky, Christine Louise and Murphy, Wendy Howard} } @article {ott1999development, title = {Development and structure of $\alpha$ 2 plates in $\gamma$-based titanium aluminides due to the $\gamma$ to $\alpha$ transformation on heating}, journal = {Scripta materialia}, volume = {40}, number = {8}, year = {1999}, pages = {899{\textendash}904}, publisher = {Pergamon}, author = {Ott, Eric A and Pollock, Tresa M} } @article {ott1998microstructural, title = {Microstructural development and creep deformation in equiaxed $\gamma$, $\gamma$+ $\alpha$ 2, and $\gamma$+ $\alpha$ 2+ B2 titanium aluminides}, journal = {Metallurgical and Materials Transactions A}, volume = {29}, number = {3}, year = {1998}, pages = {965{\textendash}978}, publisher = {Springer}, author = {Ott, Eric A and Pollock, Tresa M} } @article {kolluru1998numerical, title = {Numerical modeling of the creep behavior of unidirectional eutectic composites}, journal = {Acta materialia}, volume = {46}, number = {8}, year = {1998}, pages = {2859{\textendash}2876}, publisher = {Elsevier}, author = {Kolluru, Dakshinamurthy V and Pollock, Tresa M} } @article {dary1996effects, title = {Effects of environment on the tensile and creep behavior of a low-oxygen orthorhombic-based titanium aluminide, Ti-22 Al-23 Nb}, journal = {Titanium{\textquoteright}95- Science and technology}, year = {1996}, pages = {396{\textendash}403}, author = {Dary, Francois-Charles and Woodard, Shiela A and Pollock, Tresa M} } @article {dary1996effects, title = {Effects of high temperature air and vacuum exposures on the room temperature tensile behavior of the (O+ B2) titanium aluminide Ti-22Al-23Nb}, journal = {Materials Science and Engineering: A}, volume = {208}, number = {2}, year = {1996}, pages = {188{\textendash}202}, publisher = {Elsevier}, author = {Dary, Francois-Charles and Pollock, Tresa M} } @article {pollock1995growth, title = {The growth and elevated temperature stability of high refractory nickel-base single crystals}, journal = {Materials Science and Engineering: B}, volume = {32}, number = {3}, year = {1995}, pages = {255{\textendash}266}, publisher = {Elsevier}, author = {Pollock, Tresa M} } @booklet {walston1995nickel, title = {Nickel-base superalloy and article with high temperature strength and improved stability}, year = {1995}, note = {US Patent 5,455,120}, author = {Walston, William S and Ross, Earl W and Pollock, Tresa M and O{\textquoteright}hara, Kevin S and Murphy, Wendy H} } @conference {woodard1994microstructure, title = {Microstructure and Deformation of Ti-22Al-23Nb Orthorhombic-Based Monolithic and Composite Titanium Aluminides}, booktitle = {MRS Proceedings}, volume = {350}, year = {1994}, pages = {279}, publisher = {Cambridge University Press}, organization = {Cambridge University Press}, author = {Woodard, Shiela R and Pollock, Tresa M and others} } @article {thompson1991creep, title = {Creep of $\alpha$ 2+ $\beta$ Titanium Aluminide Alloys}, journal = {ISIJ International}, volume = {31}, number = {10}, year = {1991}, pages = {1139{\textendash}1146}, publisher = {社団法人 日本鉄鋼協会}, author = {THOMPSON, Anthony W and Pollock, Tresa M} } @inbook {pollock1988intermediate, title = {Intermediate temperature creep deformation in CMSX-3 single crystals}, booktitle = {Superalloys 1988}, year = {1988}, pages = {285}, publisher = {TMS Warrendale}, organization = {TMS Warrendale}, author = {Pollock, Tresa M and Argon, AS} } @conference {argon1987phenomenology, title = {Phenomenology and mechanisms of recovery creep}, booktitle = {Proc. 8th Int. Symp. on Metallurgy and Materials Science, RISO National Lab., Roskilde, Denmark}, year = {1987}, pages = {39{\textendash}54}, author = {Argon, AS and Bhattacharya, AK and Pollock, Tresa M} }