| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys II
|
| Presentation Title |
Tuning Shape Memory Phase Transformation of High-Entropy Alloys by Chemical Compositions |
| Author(s) |
Yuh Sun, Jo-Chi Tseng, Mao-Yuan Luo, Che-Wei Tsai, Ching-Yu Chiang, Nien-En Jiang, E-Wen Huang |
| On-Site Speaker (Planned) |
Yuh Sun |
| Abstract Scope |
In this work, Hf, Zr, Pd, Pt, and Cu were added to Ni-Ti systems to develop the new high-entropy shape memory alloys (HESMAs) with an increase of the transformation temperatures. The new high-entropy shape memory alloys (HESMAs) have better mechanical properties. To resolve the underneath mechanisms, we applied in-situ X-ray fluorescence (XRF) to map the evolution of elemental distribution in these CuNiTiHfZ HESMAs subjected to heating and cooling during phase transformations. We further quantify the chemical composition changes of CuNiTiHfZ alloys to calculate the associated entropy and enthalpy evolutions. The structural changes before and after the phase transformation were simultaneously observed and compared with the results from in-situ X-ray diffraction (XRD). |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Characterization, Phase Transformations |