About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
CALPHAD-Guided Design of CrMnFeCoNi Shape Memory Alloys |
| Author(s) |
Jinsurang Lim, Hwi Yun Jeong, Hyunseok Oh, Je In Lee |
| On-Site Speaker (Planned) |
Jinsurang Lim |
| Abstract Scope |
CrMnFeCoNi high-entropy alloys (HEAs) with an fcc structure have drawn significant attention due to their exceptional mechanical properties. These properties arise from the various deformation mechanisms, such as twinning-induced plasticity (TWIP) and transformation-induced plasticity (TRIP), which are closely related to the stacking fault energy (SFE). In addition, a shape memory effect (SME), manifested by the reversible transformation between fcc and hcp, has recently been observed in CrMnFeCoNi HEAs. This suggests that SME can be tuned by adjusting alloy composition, thereby modulating the SFE. To explore this effect, we designed a series of CrMnFeCoNi HEAs via thermodynamic calculations where alloy compositions were selected based on the prediction of difference in Gibbs free energy between fcc and hcp phases. Experimental evaluations such as thermal (DSC, TMA) and mechanical (bending, tensile) analysis demonstrated SME in the designed alloys. These findings highlight the potential of CrMnFeCoNi HEAs for functional applications beyond structural use. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Phase Transformations, |