| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys II
|
| Presentation Title |
J-72: Shape Memory Effect in CrMnFeCoNi Multi-principal Element Alloys |
| Author(s) |
Je In Lee, Jinsurang Lim, Wook Ha Ryu, Hyun Seok Oh, Eun Soo Park, Koichi Tsuchiya |
| On-Site Speaker (Planned) |
Je In Lee |
| Abstract Scope |
High-entropy alloys, which have multi-principal elements with near equiatomic composition, have drawn significant attraction for developing novel structural and functional materials with exceptional properties. In the present study, we show the influence of alloy composition on the phase transformation and shape memory behavior in CrMnFeCoNi high-entropy alloy system. With CALPHAD approach, we calculate the difference in Gibbs free energy between austenite fcc and martensite hcp phases, and find a substantial increase in thermodynamic equilibrium temperature between both phases. The transformation temperatures in the non-equiatomic CrMnFeCoNi alloys can be increased with increasing the Co/Ni and/or Cr/Mn ratio, which is comparable to that of B2-based shape memory multicomponent alloys with noble metals or refractory metals. It is expected that these results could open a new field of HEA applications as high-temperature SMAs. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Phase Transformations, |