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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Simulations/Experiments Integration for Next Generation Hypersonic Materials
Presentation Title Degradation Resistance of Refractory Multi-principal Element Alloys for Extreme Environments
Author(s) Jibril Shittu, Connor Rietema, Michael Juhasz, Zachary Sims, Hunter Henderson, Alexander Baker, Kate Elder, Joel Berry, Aurélien Perron, Brandon Bocklund, Thomas Voisin, Scott Mccall, Joseph Mckeown
On-Site Speaker (Planned) Jibril Shittu
Abstract Scope With a renewed interest in advancing the capability of materials for extreme conditions, tailoring multi-principal element alloys (MPEAs) to achieve ultra-high strength and degradation resistance are of paramount importance. Exploiting the wider compositional landscape of MPEAs allows tailoring fundamental metallurgical properties such as microstructure, phase stability, thermal conductivity, and the coefficient of thermal expansion needed to develop degradation resistant alloys. This presentation introduces candidate MPEAs that were experimentally confirmed to exhibit improved thermal transport properties, strength, tribological resistance, and oxidation resistance at room temperatures and elevated temperatures. Highlights of this study promotes the potential of utilizing MPEAs for harsh environments by characterizing their retained mechanical properties at elevated temperatures, and extended service life when compared to current structural materials. Prepared by LLNL under Contract DE-AC52-07NA27344.
Proceedings Inclusion? Planned:
Keywords High-Entropy Alloys, High-Temperature Materials, Mechanical Properties


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