About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Phase Transformations and Microstructural Evolution
|
Presentation Title |
Designing CrMnFeCoNi Multi-principal Element Alloys with Shape Memory Effect |
Author(s) |
Je In Lee, Jinsurang Lim, Hyun Seok Oh, Eun Soo Park, Koichi Tsuchiya |
On-Site Speaker (Planned) |
Je In Lee |
Abstract Scope |
The concept of high-entropy alloy design has attracted significant interest for designing novel structural and functional materials with exceptional properties. In the present study, we show high-throughput calculation and experiments to develop novel multi-principal element alloys with shape memory effect in the CrMnFeCoNi alloy system. Based on the CALPHAD approach to calculate the difference in Gibbs free energy between austenite fcc and martensite hcp phases, it is found that alloy composition strongly affects thermodynamic equilibrium temperature between both phases. The compositional effect on the martensitic transformation temperatures and shape memory behavior are systematically investigated with varying Co/Ni and Fe/Mn ratio in the quinary system. These results could open a new application of multi-principal element alloys as low- and/or high-temperature shape memory alloys. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Phase Transformations, |