@article {2216,
	title = {High Temperature B2 Precipitation in Ru-Containing Refractory Multi-principal Element Alloys},
	journal = {Metallurgical and Materials Transactions A},
	year = {2024},
	abstract = {<p>
	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\&ndash;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\&ndash;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 \&lt; 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.
</p>
},
	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 {1956,
	title = {Heterogeneous slip localization in an additively manufactured 316L stainless steel},
	journal = {International Journal of Plasticity},
	volume = {159},
	year = {2022},
	month = {09},
	pages = {103436},
	doi = {10.1016/j.ijplas.2022.103436},
	author = {Bean, Christopher and Wang, Fulin and Charpagne, Marie-agathe and Villechaise, P. and Valle, Valery and Agnew, S.R. and Gianola, D.S. and Pollock, T.m. and Stinville, Jean-Charles}
}
@article {2011,
	title = {A high stability B2-containing refractory multi-principal element alloy},
	journal = {Acta Materialia},
	volume = {229},
	year = {2022},
	month = {03},
	pages = {117767},
	doi = {10.1016/j.actamat.2022.117767},
	author = {Frey, Carolina and Silverstein, Ravit and Pollock, Tresa}
}
@article {2181,
	title = {A High Stability B2-Containing Refractory Multi-Principal Element Alloy},
	journal = {SSRN Electronic Journal},
	year = {2021},
	month = {01},
	doi = {10.2139/ssrn.3965527},
	author = {Frey, Carolina and Silverstein, Ravit and Pollock, Tresa}
}
@article {2096,
	title = {High-throughput approach for estimation of intrinsic barriers in FCC structures for alloy design},
	journal = {Scripta Materialia},
	volume = {204},
	year = {2021},
	month = {07},
	pages = {114126},
	doi = {10.1016/j.scriptamat.2021.114126},
	author = {Vamsi, K V and Charpagne, Marie-agathe and Pollock, Tresa}
}
@article {1461,
	title = {High-Resolution Deformation Mapping Across Large Fields of View Using Scanning Electron Microscopy and Digital Image Correlation},
	journal = {Experimental Mechanics},
	volume = {58},
	year = {2018},
	pages = {1407{\textendash}1421},
	abstract = {<p>
	This paper details the creation of experimental and computational frameworks to capture high-resolution, microscale deformation mechanisms and their relation to microstructure over large (mm-scale) fields of view. Scanning electron microscopy with custom automation and external beam control was used to capture 209 low-distortion micrographs of 360\&nbsp;\&mu;m \&times; 360\&nbsp;\&mu;m each, that were individually correlated using digital image correlation to obtain displacement/strain fields with a spatial resolution of 0.44\&nbsp;\&mu;m. Displacement and strain fields, as well as secondary electron images, were subsequently stitched to create a 5.7\&nbsp;mm\&nbsp;\&times;\&nbsp;3.4\&nbsp;mm field of view containing 100 million (7678 \&times; 13,004) data points. This approach was demonstrated on Mg WE43 under uniaxial compression, where effective strain was shown to be relatively constant with respect to distance from the grain boundary, and a noticeable increase in the effective strain was found with an increase in the basal Schmid factor. The ability to obtain high-resolution deformations over statistically relevant fields of view enables large data analytics to examine interactions between microstructure, microscale strain localizations, and macroscopic properties.
</p>
},
	keywords = {Alignment, Digital image correlation (DIC), Distortion, External scan, Stitching},
	issn = {17412765},
	doi = {10.1007/s11340-018-0419-y},
	author = {Chen, Z. and Lenthe, W. and Stinville, J. C. and Echlin, M. and Pollock, T. M. and Daly, S.}
}
@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 {stinville2015high,
	title = {High resolution mapping of strain localization near twin boundaries in a nickel-based superalloy},
	journal = {Acta Materialia},
	volume = {98},
	year = {2015},
	pages = {29{\textendash}42},
	publisher = {Pergamon},
	author = {Stinville, JC and Vanderesse, N and Bridier, F and Bocher, P and Pollock, TM}
}
@booklet {nizolek2015high,
	title = {High strength bulk metallic nanolaminates},
	year = {2015},
	publisher = {ASM INT SUBSCRIPTIONS SPECIALIST CUSTOMER SERVICE, MATERIALS PARK, OH 44073-0002 USA},
	author = {Nizolek, Thomas and Avallone, Jaclyn and Pollock, Tresa and Mara, Nathan and Beyerlein, Irene and Scott, Jeffrey}
}
@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 {saini2012high,
	title = {High-temperature materials increase efficiency of gas power plants},
	journal = {MRS bulletin},
	volume = {37},
	number = {06},
	year = {2012},
	pages = {550{\textendash}551},
	publisher = {Cambridge University Press},
	author = {Saini, Angela and Pollock, Tresa}
}
@article {miller2011heat,
	title = {Heat Extraction and Structure Evolution in LMC Single-Crystal Growth},
	journal = {Minerals, Metals and Materials Society/AIME, 420 Commonwealth Dr., P. O. Box 430 Warrendale PA 15086 United States.[np]. Feb},
	year = {2011},
	publisher = {Minerals, Metals and Materials Society/AIME, 420 Commonwealth Dr., P. O. Box 430 Warrendale PA 15086 United States},
	author = {Miller, Jonathan and Yuan, Lang and Eisman, Michael and Lee, Peter and Pollock, Tresa}
}
@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}
}
@booklet {adharapurapu2010high,
	title = {High-Temperature Cyclic Oxidation of Pd/Pt-Modified Nial Bond Coats},
	howpublished = {Minerals, Metals and Materials Society/AIME, 420 Commonwealth Dr., P. O. Box 430 Warrendale PA 15086 USA.[np]. 14-18 Feb},
	year = {2010},
	publisher = {Minerals, Metals and Materials Society/AIME, 420 Commonwealth Dr., P. O. Box 430 Warrendale PA 15086 USA},
	author = {Adharapurapu, Raghavendra and Widrevitz, Dan and Zhu, Jun and Lipkin, Don and Dheeradhada, Voroman and Pollock, Tresa}
}
@conference {miller2009heat,
	title = {HEAT EXTRACTION AND DENDRITIC GROWTH IN THE LIQUID-METAL-COOLING (LMC) DIRECTIONAL-SOLIDIFICATION PROCESS},
	booktitle = {International Symposium on Liquid Metal Processing and Casting (LMPC 2009)},
	year = {2009},
	author = {Miller, JD and Pollock, TM}
}
@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}
}
@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}
}
@article {tryon2007hybrid,
	title = {Hybrid intermetallic Ru/Pt-modified bond coatings for thermal barrier systems},
	journal = {Surface and Coatings Technology},
	volume = {202},
	number = {2},
	year = {2007},
	pages = {349{\textendash}361},
	publisher = {Elsevier},
	author = {Tryon, B and Murphy, KS and Yang, JY and Levi, CG and Pollock, TM}
}
@article {carroll2006high,
	title = {High refractory, low misfit Ru-containing single-crystal superalloys},
	journal = {Metallurgical and Materials Transactions A},
	volume = {37},
	number = {10},
	year = {2006},
	pages = {2927{\textendash}2938},
	publisher = {Springer},
	author = {Carroll, LJ and Feng, Q and Mansfield, JF and Pollock, TM}
}
@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}
}
