About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
D-22: Shape Memory Effect in Carbon-Containing CrMnFeCoNi High-Entropy Alloy |
| Author(s) |
Hwi Yun Jeong, Jinsurang Lim, Je In Lee |
| On-Site Speaker (Planned) |
Hwi Yun Jeong |
| Abstract Scope |
Shape recovery properties in fcc-structured alloys are increased as their grain size increases. However, an increase in grain size decreases the yield stress of alloys as known in Hall-Petch relationship. High strength of austenite matrix is important in shape memory effect due to the suppression of slip deformation during stress-induced martensitic transformation. In this study, we enhance the solid-solution strengthening of CrMnFeCoNi high-entropy alloys with the addition of carbon. Maximum solubility of carbon in the austenite was calculated via CALPHAD and predicted to be about 2% at 1473 K. A series of carbon-containing alloys (CrMnFeCo-C) were fabricated by vacuum induction melting and their martensitic transformation temperatures were decreased with the addition of carbon. The shape recovery strain was increased with increasing the carbon contents up to 1%. These results suggest that the addition of austenite strengthening elements can be effective to improve the shape recovery properties of CrMnFeCoNi high-entropy alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Phase Transformations, |