About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
New Advances in the Processing of TiNiCuNb Shape Memory Alloys: Microstructure Evolution, Martensitic Transformation, and Elastocaloric Properties |
| Author(s) |
Leandro Santos |
| On-Site Speaker (Planned) |
Leandro Santos |
| Abstract Scope |
TiNiCuNb shape memory alloys are a promising new class of materials with the potential to be applied as elastocaloric components. Due to their complex microstructure, the thermomechanical processing of these alloys remains a challenge, and new insights on this topic must enlighten the knowledge about this system. Here, we investigate the effects of hot rolling on Ti46Ni38Cu10Nb6 alloy. The results showed that hot rolling leads to the increase of martensitic transformation temperatures and the formation of a matrix containing both B2 and B19 phases. The coarsening of the lamellar eutectic constituent was observed, and part of the betha-Nb phase precipitated into the matrix after being dissolved due to hot work. Microstructural aspects and ultra-microhardness measurements suggest that dynamic recrystallization occurred during hot rolling. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Phase Transformations, Process Technology |