@conference {1836, title = {Titanium 3D Microstructure for Physics-based Generative Models: A Dataset and Primer}, year = {2023}, month = {07}, author = {Jangid, Devendra and Brodnik, Neal and Echlin, Mclean and Daly, Samantha and Pollock, Tresa and Manjunath, B.} } @article {1926, title = {Temperature-dependent tensile behavior of the HfNbTaTiZr multi-principal element alloy}, journal = {Acta Materialia}, volume = {245}, year = {2022}, month = {12}, pages = {118618}, doi = {10.1016/j.actamat.2022.118618}, author = {Mills, Leah and Emigh, Megan and Frey, Carolina and Philips, Noah and Murray, Sean and Shin, Jungho and Gianola, Daniel and Pollock, Tresa} } @article {1671, title = {Temperature dependence of single crystal elastic constants in a CoNi-Base alloy: A new methodology}, journal = {Materials Science and Engineering A}, volume = {803}, year = {2021}, pages = {140507}, abstract = {

A novel experimental setup combining induction heating, contactless (infrared thermometer) temperature measurements, and custom 15 cm length SiC-tipped piezoelectric transducers has been developed to rapidly collect resonant ultrasound spectroscopy (RUS) data from metallic rectangular parallelepiped (RP) specimens heated in air. This setup is used to collect over 70 of the lowest-frequency resonance modes from a single crystal of the novel CoNi-based superalloy SB-CoNi-10+\—an alloy identified for further study due to a promising set of high temperature properties. RUS spectra from room temperature (RT) to 927 \°C (1200 K) along with dilatometry measurements of the thermal expansion behavior are supplied to a robust, open-sourced, Bayesian inference code for simultaneous estimation of: three single crystal elastic constants, three crystal axis misorientation parameters, and a noise parameter. This study is the first application of the Bayesian RUS methodology at elevated temperatures, and the first to characterize SB-CoNi-10+. A monotonic decrease in elastic constants (C11,C12,C44) from (236.4, 150.8, 134.1) GPa to (190.7, 138.1, 95.2) GPa and a 15\% increase in elastic anisotropy from A = 3.131 \→ 3.618 is observed upon heating from RT to 927 \°C, with an increased rate of softening above 600 \°C (873 K).

}, keywords = {Bayesian inference, Elastic constants, High-temperature, Resonant ultrasound spectroscopy, Single crystal, Superalloy}, issn = {09215093}, doi = {10.1016/j.msea.2020.140507}, url = {https://doi.org/10.1016/j.msea.2020.140507}, author = {Goodlet, Brent R. and Murray, Sean P. and Bales, Ben and Rossin, Jeff and Torbet, Chris J. and Pollock, Tresa M.} } @article {2116, title = {TriBeam tomography and microstructure evolution in additively manufactured Alnico magnets}, journal = {Materials Today}, volume = {49}, year = {2021}, month = {06}, doi = {10.1016/j.mattod.2021.05.003}, author = {Rottmann, Paul and Polonsky, Andrew and Francis, Toby and Emigh, Megan and Krispin, Michael and Rieger, Gotthard and Echlin, Mclean and Levi, Carlos and Pollock, Tresa} } @article {1401, title = {Three-dimensional maps of geometrically necessary dislocation densities in additively manufactured Ni-based superalloy IN718}, journal = {International Journal of Plasticity}, year = {2020}, pages = {102709}, keywords = {Dislocations, Metallic material, Microstructures, Polycrystalline material, Three-dimensional electron backscatter diffraction}, issn = {0749-6419}, doi = {10.1016/j.ijplas.2020.102709}, url = {https://doi.org/10.1016/j.ijplas.2020.102709}, author = {Witzen, Wyatt A. and Polonsky, Andrew T. and Pollock, Tresa M. and Beyerlein, Irene J.} } @conference {1616, title = {Tuning Strain Localization in Polycrystalline Nickel-Based Superalloys by Thermomechanical Processing}, booktitle = {Superalloys 2020}, year = {2020}, publisher = {Springer International Publishing}, organization = {Springer International Publishing}, abstract = {

Thermomechanical processing routes are used to produce microstructures that minimize plastic strain localization at the sub-grain scale in a polycrystalline \γ \− \γ\&$\#$39; nickel- based superalloy. This novel approach is made possible by the use of innovative experimental tools and statistical data analysis that capture slip events over large represen- tative fields of view. Results are correlated to conventional observations of fatigue crack initiation and early stage of propagation. The effect of coherent twin boundaries and primary \γ\&$\#$39; precipitates on fatigue properties and plastic localization is detailed.

}, keywords = {3D microstructure, Annealing twin boundaries, Nickel-based superalloy, Primary γ{\textquoteright} precipitates, Slip bands}, isbn = {9783030518349}, doi = {10.1007/978-3-030-51834-9}, url = {http://dx.doi.org/10.1007/978-3-030-51834-9_65}, author = {Charpagne, M. A. and Stinville, J. C. and Polonsky, A. T. and Echlin, M. P. and Murray, S. P. and Chen, Z. and Bozzolo, N. and Cormier, J. and Valle, V. and Pollock, T. M.}, editor = {Tin, Sammy and Hardy, Mark and Clews, Justin and Cormier, Jonathan and Feng, Qiang and Marcin, John and O{\textquoteright}Brien, Chris and Suzuki, Akane} } @article {1586, title = {Twin related domain networks in Ren{\'e} 88DT}, journal = {Materials Characterization}, volume = {165}, year = {2020}, pages = {110365}, abstract = {

Annealing twins in wrought fcc materials have historically been characterized using simple 2D measures including morphology and volume fraction. Accurately describing twin related domain microstructure requires accounting for their complex 3D structure. A large microstructural volume of a nickel-base alloy Ren\é 88DT has been collected using TriBeam tomography for full characterization of a large number of complete twin related domains. A network based approach enables visualization of twin domain structures. Metrics adapted from graph theory enable the first quantitative 3D microstructure descriptions. The implications for fatigue properties in twinned nickel-base alloys are discussed.

}, keywords = {3D EBSD, Annealing twin boundaries, Graph theory, Nickel-base superalloy, Recrystallization, Tribeam, Twins}, issn = {10445803}, doi = {10.1016/j.matchar.2020.110365}, url = {https://doi.org/10.1016/j.matchar.2020.110365}, author = {Lenthe, William C. and Echlin, Mclean P. and Stinville, Jean C. and De Graef, Marc and Pollock, Tresa M.} } @article {1361, title = {Three-dimensional Analysis and Reconstruction of Additively Manufactured Materials in the Cloud-Based BisQue Infrastructure}, journal = {Integrating Materials and Manufacturing Innovation}, volume = {8}, year = {2019}, pages = {37{\textendash}51}, abstract = {

A microstructure analytics and 3D reconstruction software package, DREAM.3D, was integrated as a module into a cloud-based platform, BisQue. Parallelization of DREAM.3D module executions and the ability to parameterize pipeline variables over a range of values have led to insights about the grain segmentation misorientation tolerance in TriBeam-collected 3D EBSD datasets of additively manufactured materials with complex anisotropic microstructures. Furthermore, a comparison in grain size measurements was made between standard 2D metallographic slices and 3D measures using BisQue\&$\#$39;s parallelized DREAM.3D module executions. The direction of cloud-based data infrastructure and the prospects for impact in material science are also discussed.

}, keywords = {3D materials science, 3D metal printing, Additive manufacturing, Cloud infrastructure, Microstructure analytics, Tomography}, isbn = {4019201900}, issn = {21939772}, doi = {10.1007/s40192-019-00126-7}, author = {Polonsky, Andrew T. and Lang, Christian A. and Kvilekval, Kristian G. and Latypov, Marat I. and Echlin, McLean L.P. and Manjunath, B. S. and Pollock, Tresa M.} } @article {1176, title = {Transmission Scanning Electron Microscopy: Defect Observations and Image Simulations}, journal = {Ultramicroscopy }, volume = {186}, year = {2018}, chapter = {49}, doi = {https://doi.org/10.1016/j.ultramic.2017.11.004}, author = {Callahan, PG and Stinville, JC and Yao, ER and Echlin, MP and Titus, MS and De Graef, M and Pollock, TM and Gianola, DS} } @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 {1241, title = {Three-dimensional texture visualization approaches: theoretical analysis and examples}, journal = {Journal of Applied Crystallography}, volume = {50}, year = {2017}, month = {Jul}, pages = {430{\textendash}440}, doi = {10.1107/s1600576717001157}, author = {Callahan, Patrick G. and Echlin, Mclean and Pollock, Tresa M. and Singh, Saransh and Graef, Marc De} } @article {1186, title = {Tuning the magnetocaloric response in half-Heusler/Heusler MnNi1 xSb solid solutions}, journal = {Physical Review Materials}, volume = {1}, year = {2017}, doi = {10.1103/physrevmaterials.1.075003}, author = {Levin, Emily E. and Bocarsly, Joshua D. and Wyckoff, Kira E. and Pollock, Tresa M. and Seshadri, Ram} } @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 {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 {stinville2015transverse, title = {Transverse creep of nickel-base superalloy bicrystals}, journal = {Metallurgical and Materials Transactions A}, volume = {46}, number = {6}, year = {2015}, pages = {2516{\textendash}2529}, publisher = {Springer US}, author = {Stinville, JC and Gallup, K and Pollock, TM} } @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 {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 {jackson2014thermal, title = {Thermal barrier coating adherence to Hf-modified B2 NiAl bond coatings}, journal = {Acta Materialia}, volume = {80}, year = {2014}, pages = {39{\textendash}47}, publisher = {Pergamon}, author = {Jackson, RW and Lipkin, DM and Pollock, TM} } @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} } @conference {gallup2012transverse, title = {Transverse Creep Behavior of Superalloy Bicrystals}, 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 = {Gallup, Kaitlin and Pollock, Tresa} } @article {echlin2012tribeam, title = {The TriBeam System: Femtosecond Laser Based Serial Sectioning}, journal = {Minerals, Metals and Materials Society/AIME, 420 Commonwealth Dr., P. O. Box 430 Warrendale PA 15086 United States.[np]. Jul}, year = {2012}, publisher = {Minerals, Metals and Materials Society/AIME, 420 Commonwealth Dr., P. O. Box 430 Warrendale PA 15086 United States}, author = {Echlin, Mclean and Mottura, Alessandro and Pollock, Tresa} } @article {echlin2011tri, title = {The Tri-Beam System: Femtosecond Laser Based Tomography in a Dual-Beam FIB}, journal = {Microscopy and Microanalysis}, volume = {17}, number = {S2}, year = {2011}, pages = {958{\textendash}959}, publisher = {Cambridge University Press}, author = {Echlin, M and Mottura, A and Pollock, T} } @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} } @conference {chen2008terahertz, title = {Terahertz characterization of interfacial oxide layers and voids for health monitoring of ceramic coatings}, booktitle = {2009 34th International Conference on Infrared, Millimeter, and Terahertz Waves}, year = {2008}, author = {Chen, Chia-Chu and Lee, Dong-Joon and Pollock, Tresa and Whitaker, John F} } @article {madison2008three, title = {The three-dimensional reconstruction of the dendritic structure at the solid-liquid interface of a Ni-based single crystal}, journal = {JOM}, volume = {60}, number = {7}, year = {2008}, pages = {26{\textendash}30}, publisher = {Springer}, author = {Madison, J and Spowart, JE and Rowenhorst, DJ and Pollock, TM} } @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} } @article {kulkarni2007ternary, title = {Ternary diffusion in a RuAl-NiAl couple}, journal = {Journal of Phase Equilibria and Diffusion}, volume = {28}, number = {6}, year = {2007}, pages = {503{\textendash}509}, publisher = {Springer US}, author = {Kulkarni, KN and Tryon, B and Pollock, TM and Dayananda, MA} } @article {elliott2007thermal, title = {Thermal analysis of the Bridgman and liquid-metal-cooled directional solidification investment casting processes}, journal = {Metallurgical and Materials Transactions A}, volume = {38}, number = {4}, year = {2007}, pages = {871{\textendash}882}, publisher = {Springer US}, author = {Elliott, AJ and Pollock, TM} } @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 {tryon2004thermal, title = {Thermal expansion behavior of ruthenium aluminides}, journal = {Scripta Materialia}, volume = {50}, number = {6}, year = {2004}, pages = {845{\textendash}848}, publisher = {Pergamon}, author = {Tryon, B and Pollock, TM and Gigliotti, MFX and Hemker, K} } @article {lu2004transmission, title = {Transmission electron microscopy study of complex planar faults in Ru{\textendash}Al{\textendash}0.5 at.\% B}, journal = {Philosophical Magazine}, volume = {84}, number = {22}, year = {2004}, pages = {2317{\textendash}2329}, publisher = {Taylor \& Francis}, author = {Lu, D-C and De Graef, M and Pollock{\textdagger}, TM} }