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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Late News Poster Session
Presentation Title O-41: Fe-rich Metastable Multi-principal Element Alloys
Author(s) James J. Frishkoff, Nathan Brown, Madeline Rivera, Amy Clarke, Kester Clarke
On-Site Speaker (Planned) James J. Frishkoff
Abstract Scope Metastable dual-phase multi-principal element alloys (DP-MPEAs) have been shown to exhibit both transformation and twinning induced plasticity (TRIP/TWIP), which contribute to characteristically high ultimate tensile strength (≥ 1GPa) and ductility (≥ 50% strain to fracture). A multi-factor thermodynamic & experimental screening approach for identifying new Fe-rich metastable DP-MPEA compositions with improved yield strength is reported here. Alloy design criteria include the elimination of cobalt, precipitate strengthening behavior, and dual-phase microstructures. The screening approach employs a novel phase metastability criterion to predict the transformation-induced plasticity susceptibility of each composition. Microstructures and tensile properties are assessed in the as-cast and heat treated conditions.
Proceedings Inclusion? Undecided
Keywords High-Entropy Alloys, Phase Transformations, Mechanical Properties

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