About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
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High Entropy Alloys VIII
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Presentation Title |
Stability of Al-Li-Ti-Sc-Mg High Entropy Alloys from Monte Carlo Simulations |
Author(s) |
James R. Morris, Eva Zarkadoula, M. Claudia Troparevsky, Andreas Kulovits |
On-Site Speaker (Planned) |
Eva Zarkadoula |
Abstract Scope |
Based on a recent approach for utilizing high throughput first-principles calculations in Monte Carlo simulations of medium- and high-entropy alloys, we examine the temperature- and composition-dependent stability of Al-Li-Ti-Sc-Mg alloys. The Al20Li20Mg10Sc20Ti30 alloy is reported to form a single-phase high entropy material despite strong Al-Ti and Al-Sc interactions, and the tendency of Li-Ti and Li-Sc to phase separate. Our calculations indicate that a single phase likely forms above ~600 K; below this temperature, there is the strong development of Li-Mg, Ti-Al, and Ti-Sc ordering. The calculations suggest that for Al alloys, a strong enthalpy of mixing does not preclude single-phase solid solutions. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume |