|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||High Entropy Alloys VIII
||Stability of Al-Li-Ti-Sc-Mg High Entropy Alloys from Monte Carlo Simulations
||James R. Morris, Eva Zarkadoula, M. Claudia Troparevsky, Andreas Kulovits
|On-Site Speaker (Planned)
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.
||Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume