@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 {1961,
	title = {Determination of peak ordering in the CrCoNi medium-entropy alloy via nanoindentation},
	journal = {Acta Materialia},
	volume = {241},
	year = {2022},
	month = {09},
	pages = {118380},
	doi = {10.1016/j.actamat.2022.118380},
	author = {Zhang, Mingwei and Yu, Qin and Frey, Carolina and Walsh, Flynn and Payne, Madelyn and Kumar, Punit and Liu, Dongye and Pollock, Tresa and Asta, Mark and Ritchie, Robert and Minor, Andrew}
}
@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 {1996,
	title = {Microstructure Evolution and Tensile Properties of a Selectively Laser Melted CoNi-Base Superalloy},
	journal = {Metallurgical and Materials Transactions A},
	volume = {53},
	year = {2022},
	month = {05},
	doi = {10.1007/s11661-022-06716-z},
	author = {Murray, Sean and Raeker, Evan and Pusch, Kira and Frey, Carolina and Torbet, Chris and Zhou, Ning and Forsik, St{\'e}phane and Dicus, Austin and Colombo, Gian and Kirka, M. and Pollock, Tresa}
}
@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 {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 {1651,
	title = {Expanded dataset of mechanical properties and observed phases of multi-principal element alloys},
	journal = {Scientific Data},
	volume = {7},
	year = {2020},
	pages = {1{\textendash}6},
	abstract = {<p>
	This data article presents a compilation of mechanical properties of 630 multi-principal element alloys\&nbsp;(MPEAs). Built upon recently published MPEA databases, this article includes updated records from previous reviews (with minor error corrections) along with new data from articles that were published since 2019. The extracted properties include reported composition, processing method, microstructure, density, hardness, yield strength, ultimate tensile strength (or maximum compression strength), elongation (or maximum compression strain), and Young\&$\#$39;s modulus. Additionally, descriptors (e.g. grain size) not included in previous reviews were also extracted for articles that reported them. The database is hosted and continually updated on an open data platform, Citrination. To promote interpretation, some data are graphically presented.
</p>
},
	issn = {20524463},
	doi = {10.1038/s41597-020-00768-9},
	author = {Borg, Christopher K.H. and Frey, Carolina and Moh, Jasper and Pollock, Tresa M. and Gorsse, St{\'e}phane and Miracle, Daniel B. and Senkov, Oleg N. and Meredig, Bryce and Saal, James E.}
}
