| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Low-fatigue Ti-based Shape Memory Alloy for Bulk Elastocaloric Material |
| Author(s) |
Wook Ha Ryu, Ji Young Kim, Eun Soo Park |
| On-Site Speaker (Planned) |
Wook Ha Ryu |
| Abstract Scope |
Cooling system utilizing elastocaloric material has been recognized as a promising alternative to the vapor compression system, owing to the high coefficients of performance. In this study, we developed a bulk Ti-based superelastic alloy that exhibits mechanical and functional low-fatigue properties. We investigated the elastocaloric effect (temperature change) and strain hysteresis according to reversible stress-induced martensitic phase transformation of the TiNiCu-based multi-component alloy. According to the solidification path by casting in the composition in which Cu is supersaturated, nano-sized precipitates forming a coherent interface with both martensite and austenite phases can be uniformly dispersed in the grain. This methodology is expected to be used as a useful guide for controlling microstructures by dispersing nano precipitations in cast alloys. In addition, this study can be applied to the design of high efficient heat exchange system for home appliances and other products such as refrigerators. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, Titanium, Other |