| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Effect of Co/Ni ratio on shape memory effect
of the CrMnFeCoNi multi-component alloys |
| Author(s) |
Jinsurang Lim, Hwi Yun Jeong, Hyun Seok Oh, Je In Lee |
| On-Site Speaker (Planned) |
Jinsurang Lim |
| Abstract Scope |
With the advent of ‘high-entropy alloys (HEAs)’ concept, many researchers have explored the multi-component system to design novel structural and functional materials. CrMnFeCoNi-based alloys have shown exceptional mechanical properties which were driven by reducing stacking fault energy to enhance nano-twinning and phase transformation-induced plasticity. Alloy composition in the quinary alloy strongly influences the FCC phase stability, and alloys with a high Co/Ni ratio showed shape memory effect induced by the reversible transformation between FCC/HCP phases. In this study, the compositional effect on the microstructural evolution, martensitic transformation temperature, and shape recovery behavior were investigated in detail by changing the Co/Ni ratio. Using EBSD analysis, it was found that deformation behaviors changed even with a slight change in the Co/Ni ratio. These results identify the relationships between composition, microstructure, and properties, suggesting an insight into HEA design to improve the shape memory properties in the CrMnFeCoNi system. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Phase Transformations, |