@article {2201, title = {Strength vs temperature for refractory complex concentrated alloys (RCCAs): A critical comparison with refractory BCC elements and dilute alloys}, journal = {Acta Materialia}, volume = {266}, year = {2024}, pages = {119692}, abstract = {

To support the development of refractory complex, concentrated alloys (RCCAs), a clear understanding of the effect of temperature on strength is needed. Body-centered cubic (BCC) refractory metals and dilute refractory alloys show a strong temperature dependence of yield stress (\σy) at low and high temperatures, with a relatively temperature-independent regime in between. RCCAs may introduce important changes in deformation and strengthening mechanisms, so it is not clear if RCCAs will show the same thermal dependencies. The objective of this work is to answer the question, \“Is the temperature dependence of strength similar or different for RCCAs compared to BCC refractory elements and dilute refractory alloys ?\” We evaluate \σy vs. temperature for 61 RCCAs by analyzing data curated from the literature. We find that \σy increases progressively from refractory BCC elements, to dilute alloys, to single- and multi-phase RCCAs. Single-phase RCCAs show the same three thermal regimes, but the stresses are higher and the intermediate plateau is shorter and is sometimes steeper. The thermal dependence of \σy in multi-phase RCCAs shows more substantial differences. Six factors that contribute to the higher \σy of RCCAs are discussed: (i) higher solute concentration; (ii) dispersion in atomic sizes; (iii) the shear modulus magnitude; (iv) the type of principal elements; (v) the solvus temperature of predicted secondary phases; and (vi) microstructure. Based on the present observations and analyses, suggestions for future research are made, especially regarding improved models for the effect of temperature on strength.

}, keywords = {High-entropy alloys, Refractory complex concentrated alloys (RCCAs), Temperature effects, Yield strength}, issn = {1359-6454}, doi = {https://doi.org/10.1016/j.actamat.2024.119692}, url = {https://www.sciencedirect.com/science/article/pii/S1359645424000454}, author = {D.B. Miracle and O.N. Senkov and C. Frey and S. Rao and T.M. Pollock} } @article {1896, title = {Slip localization behavior at triple junctions in nickel-base superalloys}, journal = {Acta Materialia}, volume = {249}, year = {2023}, month = {02}, pages = {118801}, doi = {10.1016/j.actamat.2023.118801}, author = {Hestroffer, Jonathan and Stinville, Jean-Charles and Charpagne, Marie-agathe and Miller, Matthew and Pollock, Tresa and Beyerlein, Irene} } @article {1991, title = {Scan strategies in EBM-printed IN718 and the physics of bulk 3D microstructure development}, journal = {Materials Characterization}, volume = {190}, year = {2022}, month = {06}, pages = {112043}, doi = {10.1016/j.matchar.2022.112043}, author = {Polonsky, Andrew and Raghavan, Narendran and Echlin, Mclean and Kirka, M. and Dehoff, Ryan and Pollock, Tresa} } @article {1811, title = {Single crystal elastic constants of additively manufactured components determined by resonant ultrasound spectroscopy}, journal = {Materials Characterization}, volume = {192}, year = {2022}, pages = {112244}, abstract = {

Bayesian inference with Sequential Monte Carlo was used to determine the single crystal elastic constants of additively manufactured (AM) cobalt-nickel-based superalloy specimens from only the resonant frequencies and texture data. This novel framework enables the quantification of the single crystal elastic constants for AM and polycrystalline specimens using only electron backscatter diffraction (EBSD) and Resonant Ultrasound Spectroscopy (RUS), avoiding the expense of bulk single crystal fabrication or synchrotron experiments. A parallelizable and open-source Python package (SMCPy) was used to perform Bayesian inference of the single crystal elastic constants from resonant frequencies of AM specimens. The single crystal elastic constants determined from AM cobalt-nickel-base superalloy specimens were validated with measurements of the single crystal elastic constants on a bulk single crystal specimen. EBSD texture data was used to determine the single crystal elastic constants from the resonant frequencies of AM specimens, and validated with neutron diffraction data by considering the experimental uncertainty in both the EBSD and neutron diffraction data. The robustness of this framework for varied texture orientations relative to the build direction (BD) was demonstrated for AM specimens printed at 0\° and 20\° BD-inclinations.

}, issn = {1044-5803}, doi = {https://doi.org/10.1016/j.matchar.2022.112244}, url = {https://www.sciencedirect.com/science/article/pii/S1044580322005265}, author = {Jeff Rossin and Patrick Leser and Kira Pusch and Carolina Frey and Sven C. Vogel and Alec I. Saville and Chris Torbet and Amy J. Clarke and Samantha Daly and Tresa M. Pollock} } @article {1936, title = {Subgrain geometrically necessary dislocation density mapping in spalled Ta in three dimensions}, journal = {Acta Materialia}, volume = {244}, year = {2022}, month = {11}, pages = {118366}, doi = {10.1016/j.actamat.2022.118366}, author = {Witzen, Wyatt and Echlin, Mclean and Charpagne, Marie-agathe and Pollock, Tresa and Beyerlein, Irene} } @article {2106, title = {Slip localization in Inconel 718: A three-dimensional and statistical perspective}, journal = {Acta Materialia}, volume = {215}, year = {2021}, month = {06}, pages = {117037}, doi = {10.1016/j.actamat.2021.117037}, author = {Charpagne, Marie-agathe and Hestroffer, Jonathan and Polonsky, Andrew and Echlin, M.P. and Texier, Damien and Valle, Valery and Beyerlein, I.J. and Pollock, T.m. and Stinville, Jean-Charles} } @article {2071, title = {Strain Localization and Fatigue Crack Formation at ( 0001 ) Twist Boundaries in Titanium Alloys}, journal = {Acta Materialia}, volume = {219}, year = {2021}, month = {08}, pages = {117227}, doi = {10.1016/j.actamat.2021.117227}, author = {H{\'e}mery, Samuel and Stinville, Jean-Charles and Wang, Fulin and Charpagne, Marie-agathe and Emigh, M.G. and Pollock, T.m. and Valle, Valery} } @article {1566, title = {Serial sectioning in the SEM for three dimensional materials science}, journal = {Current Opinion in Solid State and Materials Science}, year = {2020}, pages = {100817}, abstract = {

Here we explore the range of serial sectioning techniques that have evolved over the past decade, providing a comprehensive toolkit for capturing rich 3D microstructures, chemistries and crystallographic information, with sub-micron resolution at volumes that extend out to mm3 or even cm3. In each case we consider the challenges associated with their application, the volumes they can analyze, the damage to the surface they impart, and their suitability for different materials. In certain cases these warrant hybrid methods, motivating workflows that leverage multiple sectioning modes within the same instrument. Finally, we provide a perspective on their future development, including advances in data collection, segmentation, registration, data fusion, and correlative microscopy. Furthermore, the exploitation of 3D techniques for a better understanding of existing materials, and the design of new ones, is discussed through their use in multiscale modelling, digital twinning, material informatics and machine learning frameworks.

}, keywords = {Biology, Life sciences, Materials science, Scanning electron microscopy, Serial sectioning}, issn = {13590286}, doi = {10.1016/j.cossms.2020.100817}, url = {https://doi.org/10.1016/j.cossms.2020.100817}, author = {Echlin, Mclean P. and Burnett, Timothy L. and Polonsky, Andrew T. and Pollock, Tresa M. and Withers, Philip J.} } @article {1406, title = {Solidification-driven orientation gradients in additively manufactured stainless steel}, journal = {Acta Materialia}, volume = {183}, year = {2020}, pages = {249{\textendash}260}, abstract = {

A sample of 304L stainless steel manufactured by Laser Engineered Net Shaping (LENS) was characterized in 3D using TriBeam tomography. The crystallographic, structural, and chemical properties of the as-deposited microstructure have been studied in detail. 3D characterization reveals complex grain morphologies and large orientation gradients, in excess of 10o, that are not easily interpreted from 2D cross-sections alone. Misorientations were calculated via a methodology that locates the initial location and orientation of grains that grow during the build process. For larger grains, misorientation increased along the direction of solidification. For grains with complex morphologies, K-means clustering in orientation space is demonstrated as a useful approach for determining the initial growth orientation. The gradients in misorientation directly tracked with gradients in chemistry predicted by a Scheil analysis. The accumulation of misorientation is linked to the solutal and thermal solidification path, offering potential design pathways for novel alloys more suited for additive manufacturing.

}, keywords = {Additive manufacturing, Microstructure, Solidification, Tomography, Tribeam}, issn = {13596454}, doi = {10.1016/j.actamat.2019.10.047}, author = {Polonsky, Andrew T. and Lenthe, William C. and Echlin, Mclean P. and Livescu, Veronica and Gray, George T. and Pollock, Tresa M.} } @article {1561, title = {Structural coupling and magnetic tuning in Mn$_{2}$$_{-}$ₓCoₓP magnetocalorics for thermomagnetic power generation}, journal = {APL Materials}, volume = {8}, year = {2020}, pages = {041106}, abstract = {

Promising materials for magnetic refrigeration and thermomagnetic power generation often display strong coupling between magnetism and structure. It has been previously proposed that MnCoP exhibits this strong coupling, contributing to its substantial magnetocaloric effect near TC = 578K. Here, we show from temperature-dependent synchrotron x-ray diffraction that MnCoP displays a discontinuity in the thermal expansion at TC, with spontaneous magnetostriction that is positive in the a direction and negative in the b direction, highlighting the anisotropic nature of the magnetostructural coupling. Varying the Mn:Co ratio of Mn2-xCoxP within the range of 0.6 \≤ x \≤ 1.4 allows the magnetic properties to be tuned. TC decreases as the composition deviates from stoichiometric MnCoP, as does the saturation magnetization. The magnitude of the magnetocaloric effect, |\ΔSM|, decreases as well, due to broadening of the magnetic transition. The large reversible change in magnetization \ΔM accessible over a small temperature range under moderate magnetic fields makes these materials promising for thermomagnetic power generation from waste heat.

}, issn = {2166532X}, doi = {10.1063/1.5142000}, url = {https://doi.org/10.1063/1.5142000}, author = {Levin, Emily E. and Bocarsly, Joshua D. and Grebenkemper, Jason H. and Issa, Ramsey and Wilson, Stephen D. and Pollock, Tresa M. and Seshadri, Ram} } @article {1621, title = {Sustainability through alloy design: Challenges and opportunities}, journal = {Progress in Materials Science}, year = {2020}, pages = {100722}, abstract = {

Exciting metallurgical breakthroughs of the last decades alongside the development and wide-ranging availability of new and more capable experimental and theoretical tools for metals research demonstrate that we are witnessing the dawn of a new age in metals design. Historically, the discovery of new metallic materials has enabled the vast majority of the key engineering advances in human history. Current engineering challenges create an urgent need for new metallic materials to further our technological advances in multiple industries that are key to our existence. Yet, present data on metals processing clearly demonstrate the significant environmental impact of the metallurgical industry on our planet\&$\#$39;s future. There are numerous reports in which this impact and corresponding processing solutions are discussed. On the other hand, design of new metallic materials with improved property combinations can help address key environmental challenges in various ways. To this end, the goal of this review is to discuss the most urgent sustainability challenges that can be addressed with alloy design, to help orchestrate the increasing interest in metallurgical research to focus on these most critical challenges.

}, keywords = {Aluminum, High Entropy Alloys, Magnesium, Metallurgy, Shape memory alloys, Steel, Superalloys, Sustainability, Titanium}, issn = {00796425}, doi = {10.1016/j.pmatsci.2020.100722}, url = {https://doi.org/10.1016/j.pmatsci.2020.100722}, author = {Cann, Jaclyn L. and De Luca, Anthony and Dunand, David C. and Dye, David and Miracle, Daniel B. and Oh, Hyun Seok and Olivetti, Elsa A. and Pollock, Tresa M. and Poole, Warren J. and Yang, Rui and Tasan, C. Cem} } @article {1496, title = {Short crack propagation from cracked non-metallic inclusions in a Ni-based polycrystalline superalloy}, journal = {Acta Materialia}, volume = {165}, year = {2019}, pages = {241{\textendash}258}, abstract = {

Fatigue cracks initiating from surface and sub-surface non-metallic inclusions (NMIs) have recently been demonstrated to be a necessary but not sufficient explanation for atypically short low-cycle fatigue life in Inconel 718 alloy at intermediate temperature. Therefore, the early stages of short crack propagation from surface NMIs were investigated in a crystallographic and two-dimensional versus three-dimensional morphological manner after room temperature low cycle fatigue (LCF) testing. In the present investigation, NMIs were purposely pre-cracked using different techniques to suppress the natural crack initiation period and thus the incubation period prior to the early stages of crack propagation. Under such fatigue testing conditions, different mechanisms of crack transmission from pre-cracked NMIs were identified: (i) no propagation, (ii) NMI/adjacent metallic grain interfacial debonding, (iii) transgranular crack propagation within the adjacent metallic grain. Focused-ion-beam cross-section observations of numerous fatigue tested NMIs aimed to define a morphological criterion for non-propagating NMIs. Large cracked NMIs at the surface (2c) with limited extension into the depth (a) did not propagate under such fatigue conditions for 2c/a ratio higher than 3. Furthermore, specific crystallographic relationships between NMIs and the adjacent metallic grain explained different crack propagation configurations from pre-cracked NMIs, i.e. interfacial debonding and transgranular crack propagation involving single or multiple-slip activity.

}, keywords = {Focus-ion-beam cross-section (FIB-cross section), Low cycle fatigue, Non-metallic inclusions, Short crack propagation, Superalloy 718DA}, issn = {13596454}, doi = {10.1016/j.actamat.2018.11.051}, author = {Texier, Damien and Stinville, Jean Charles and Echlin, Mclean P. and Pierret, St{\'e}phane and Villechaise, Patrick and Pollock, Tresa M. and Cormier, Jonathan} } @article {1476, title = {Shearing of γ{\textquoteright} particles in Co-base and Co-Ni-base superalloys}, journal = {Acta Materialia}, volume = {161}, year = {2018}, pages = {99{\textendash}109}, abstract = {

Shearing mechanisms of the primary strengthening phase in cobalt-base and cobalt-nickel-base superalloys, \γ\′ (L12), are investigated at the elementary defect level by using a combination of generalized-stacking-fault energy (GSF) calculations and phase field simulations. The GSF energy surfaces of the \γ and \γ\′ phases, as determined from available experimental data and ab initio calculations, are used in the phase field simulations. Sophisticated deformation pathways leading to various planar defects including antiphase boundaries (APB), remnant superlattice intrinsic stacking faults (SISF), APB-SISF-APB ribbons and SISF islands are predicted as a function of alloy composition and particle shapes. The predicted stacking fault configurations for both alloys are consistent with recent transmission electron microscopy observations. Effects of dislocation line tension difference in \γ and \γ\′ phases and planar defect energy variation due to segregation at the planar defects are discussed. The detailed dislocation core structures, effects of dislocation line tension differences on deformation mechanisms, and unique deformation mechanisms uncovered, which include stacking fault ribbon shearing, antiphase boundary shearing, and mixed modes, could be used to improve constitutive microstructure-property relationships in advanced crystal plasticity modeling and to assist in alloy design.

}, keywords = {Ab initio calculation, Dislocation creep, Phase field simulation, Precipitation hardening, Stacking fault ribbon}, issn = {13596454}, doi = {10.1016/j.actamat.2018.09.013}, author = {Feng, L. and Lv, D. and Rhein, R. K. and Goiri, J. G. and Titus, M. S. and Van der Ven, A. and Pollock, T. M. and Wang, Y.} } @article {1246, title = {Segmentation-free image processing and analysis of precipitate shapes in 2D and 3D}, journal = {Modelling and Simulation in Materials Science and Engineering}, volume = {25}, year = {2017}, pages = {045009}, doi = {10.1088/1361-651x/aa67b9}, author = {Bales, Ben and Pollock, Tresa and Petzold, Linda} } @article {1196, title = {On Slip Initiation in Equiaxed Alpha/Beta Ti-6Al-4V}, journal = {Acta Materialia}, volume = {136}, year = {2017}, chapter = {288}, doi = {https://doi.org/10.1016/j.actamat.2017.06.059}, url = {https://www.sciencedirect.com/science/article/pii/S1359645417305360?via\%3Dihub}, author = {Kasemer, M and Echlin, MP and Stinville, JC and Pollock, TM and Dawson, P} } @article {1191, title = {Strain fields induced by kink band propagation in Cu-Nb nanolaminate composites}, journal = {Acta Materialia}, volume = {133}, year = {2017}, pages = {303{\textendash}315}, doi = {10.1016/j.actamat.2017.04.050}, author = {Nizolek, T.j. and Begley, MR and McCabe, RJ and Avallone, JT and Mara, NA and Beyerlein, IJ and Pollock, TM} } @article {meher2016solute, title = {Solute partitioning in multi-component $\gamma$/$\gamma$' Co{\textendash}Ni-base superalloys with near-zero lattice misfit}, journal = {Scripta Materialia}, volume = {113}, year = {2016}, pages = {185{\textendash}189}, publisher = {Pergamon}, author = {Meher, S and Carroll, LJ and Pollock, TM and Carroll, MC} } @article {stinville2016sub, title = {Sub-grain scale digital image correlation by electron microscopy for polycrystalline materials during elastic and plastic deformation}, journal = {Experimental Mechanics}, volume = {56}, number = {2}, year = {2016}, pages = {197{\textendash}216}, publisher = {Springer US}, author = {Stinville, JC and Echlin, MP and Texier, D and Bridier, F and Bocher, P and Pollock, TM} } @article {theillard2015sharp, title = {A sharp computational method for the simulation of the solidification of binary alloys}, journal = {Journal of Scientific Computing}, volume = {63}, number = {2}, year = {2015}, pages = {330{\textendash}354}, publisher = {Springer US}, author = {Theillard, Maxime and Gibou, Fr{\'e}d{\'e}ric and Pollock, Tresa} } @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 {carpenter2015suppression, title = {The suppression of instabilities via biphase interfaces during bulk fabrication of nanograined Zr}, journal = {Materials Research Letters}, volume = {3}, number = {1}, year = {2015}, pages = {50{\textendash}57}, publisher = {Taylor \& Francis}, author = {Carpenter, JS and Nizolek, TJ and McCabe, RJ and Zheng, SJ and Scott, JE and Vogel, SC and Mara, NA and Pollock, TM and Beyerlein, IJ} } @article {miller2014simulation, title = {Simulation of diffusion-limited lateral growth of dendrites during solidification via liquid metal cooling}, journal = {Acta Materialia}, volume = {69}, year = {2014}, pages = {47{\textendash}59}, publisher = {Pergamon}, author = {Miller, JD and Yuan, L and Lee, PD and Pollock, TM} } @article {miller2014stability, title = {Stability of dendrite growth during directional solidification in the presence of a non-axial thermal field}, journal = {Acta Materialia}, volume = {78}, year = {2014}, pages = {23{\textendash}36}, publisher = {Pergamon}, author = {Miller, JD and Pollock, TM} } @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 {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} } @conference {berman2012structure, title = {Structure Evolution in AZ 61 L along a Fine-Grain Sheet Processing Path}, booktitle = {AIP Conference Proceedings}, year = {2012}, publisher = {American Institute of Physics, Ste. 1 NO 1 Melville NY 11747-4502 United States}, organization = {American Institute of Physics, Ste. 1 NO 1 Melville NY 11747-4502 United States}, author = {Berman, Tracy and Donlon, William and Miller, Victoria and Huang, Jack and Decker, Ray and Jones, Wayne and Pollock, Tresa} } @article {brundidge2012structure, title = {Structure refinement by a liquid metal cooling solidification process for single-crystal nickel-base superalloys}, journal = {Metallurgical and Materials Transactions A}, volume = {43}, number = {3}, year = {2012}, pages = {965{\textendash}976}, publisher = {Springer US}, author = {Brundidge, CL and Van Drasek, D and Wang, B and Pollock, TM} } @article {beyerlein2012structure, title = {Structure{\textendash}property{\textendash}functionality of bimetal interfaces}, journal = {Jom}, volume = {64}, number = {10}, year = {2012}, pages = {1192{\textendash}1207}, publisher = {Springer US}, author = {Beyerlein, IJ and Mara, NA and Wang, J and Carpenter, JS and Zheng, SJ and Han, WZ and Zhang, RF and Kang, K and Nizolek, T and Pollock, TM} } @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} } @article {kozar2009strengthening, title = {Strengthening mechanisms in polycrystalline multimodal nickel-base superalloys}, journal = {Metallurgical and Materials Transactions A}, volume = {40}, number = {7}, year = {2009}, pages = {1588{\textendash}1603}, publisher = {Springer}, author = {Kozar, RW and Suzuki, A and Milligan, WW and Schirra, JJ and Savage, MF and Pollock, TM} } @article {heidloff2009structural, title = {Structural stability of platinum-group-metal-modified $\gamma$+ $\gamma$' Ni-base alloys}, journal = {Metallurgical and Materials Transactions A}, volume = {40}, number = {7}, year = {2009}, pages = {1529{\textendash}1540}, publisher = {Springer US}, author = {Heidloff, AJ and Van Sluytman, J and Pollock, TM and Gleeson, B} } @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} } @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} } @article {feng2006soldification, title = {Soldification segregation in ruthenium-containing nickel-base superalloys}, journal = {Metallurgical and Materials Transactions A}, volume = {37}, number = {6}, year = {2006}, pages = {1949{\textendash}1962}, publisher = {Springer-Verlag}, author = {Feng, Q and Carroll, LJ and Pollock, TM} } @article {saddock2005solidification, title = {Solidification and Microstructure of Mg-Al-(Ca, Sr, Ce, La) Ternary Alloys}, journal = {Essential Readings in Magnesium Technology}, year = {2005}, pages = {199{\textendash}204}, publisher = {John Wiley \& Sons, Inc.}, author = {Saddock, ND and Suzuki, A and Wu, K and Wildy, SC and Chang, YA and Pollock, TM and Jones, JW} } @article {suzuki2005solidification, title = {Solidification paths and eutectic intermetallic phases in Mg{\textendash}Al{\textendash}Ca ternary alloys}, journal = {Acta Materialia}, volume = {53}, number = {9}, year = {2005}, pages = {2823{\textendash}2834}, publisher = {Elsevier}, author = {Suzuki, A and Saddock, ND and Jones, JW and Pollock, TM} } @article {suzuki2004structure, title = {Structure and transition of eutectic (Mg, Al) 2 Ca Laves phase in a die-cast Mg{\textendash}Al{\textendash}Ca base alloy}, journal = {Scripta Materialia}, volume = {51}, number = {10}, year = {2004}, pages = {1005{\textendash}1010}, publisher = {Pergamon}, author = {Suzuki, A and Saddock, ND and Jones, JW and Pollock, TM} } @article {cerreta2004symposium, title = {Symposium on Dynamic Deformation: Constitutive Modeling, Grain Size, and Other Effects{\textendash}In Honor of Prof. Ronald W. Armstrong-Dynamic Deformation and Damage in Cast g-TiAl during Taylor Cylinder}, journal = {Metallurgical and Materials Transactions-Series A}, volume = {35}, number = {9}, year = {2004}, pages = {2557{\textendash}2566}, publisher = {Warrendale, PA: Minerals, Metals \& Materials Society; Materials Park, OH: ASM International, c1994-}, author = {Cerreta, E and Gray, GT and Chen, SR and Pollock, TM} } @article {feng2003solidification, title = {Solidification of high-refractory ruthenium-containing superalloys}, journal = {Acta Materialia}, volume = {51}, number = {1}, year = {2003}, pages = {269{\textendash}284}, publisher = {Elsevier}, author = {Feng, Q and Nandy, TK and Tin, S and Pollock, TM} } @article {tin2003stabilization, title = {Stabilization of thermosolutal convective instabilities in Ni-based single-crystal superalloys: Carbide precipitation and Rayleigh numbers}, journal = {Metallurgical and Materials Transactions A}, volume = {34}, number = {9}, year = {2003}, pages = {1953{\textendash}1967}, publisher = {Springer-Verlag}, author = {Tin, S and Pollock, TM} } @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} } @booklet {boyce2001special, title = {Special issue-Micromechanics and micromechanisms of deformation and fracture: A special issue in honor of professor Ali S. Argon-Preface}, year = {2001}, publisher = {ELSEVIER SCIENCE SA PO BOX 564, 1001 LAUSANNE, SWITZERLAND}, author = {Boyce, MC and Pollock, TM and Hsia, KJ} } @article {tin2001stabilization, title = {Stabilization of thermosolutal convective instabilities in Ni-based single-crystal superalloys: Carbon additions and freckle formation}, journal = {Metallurgical and Materials Transactions A}, volume = {32}, number = {7}, year = {2001}, pages = {1743{\textendash}1753}, publisher = {Springer-Verlag}, author = {Tin, S and Pollock, TM and Murphy, W} } @conference {pollock2000superalloys, title = {Superalloys 2000}, booktitle = {Ninth International Symposium on Superalloys}, year = {2000}, pages = {2000}, author = {Pollock, TM and Kissinger, RD and Bowman, RR and Green, K} } @article {steif1997surface, title = {Surface damage due to impact and fatigue strength reduction in gamma titanium aluminides}, journal = {Minerals, Metals and Materials Society/AIME(USA),}, year = {1997}, pages = {435{\textendash}442}, author = {Steif, PS and Jones, JW and Harding, T and Rubal, MP and Gandelsman, VZ and Biery, N and Pollock, TM} }