About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Advances in Multi-Principal Element Alloys III: Mechanical Behavior
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Presentation Title |
High-entropy Effects on Phase Transformation Behavior of CuNiTiHfZr High-entropy Shape Memory Alloys |
Author(s) |
Mao-Yuan Luo, Tu-Ngoc Lam, Nien-En Chiang, Ching-Yu Chiang, Yuh Sun, Jo-chi Tseng, Che-Wei Tsai, E-Wen Huang |
On-Site Speaker (Planned) |
Mao-Yuan Luo |
Abstract Scope |
By incorporating the concept of high-entropy alloys into traditional Ni-Ti shape memory alloys (SMAs) through the addition of Cu, Hf, and Zr, it is possible to obtain high-entropy shape memory alloys (HESMAs) with higher operating temperatures and broader application ranges. The macroscopic behavior obtained through differential scanning calorimetry (DSC) can be compared with the microscopic behavior observed through in-situ X-ray diffraction (XRD), X-ray nano-diffraction (XND), and X-ray fluorescence (XRF). The influence of the core-shell structure formed by an uneven distribution of alloying elements on the phase transformation behavior of CuNiTiHfZr enables to explain the mismatch between the macroscopic and microscopic behaviors, providing a better understanding of the combined effects of high-entropy and shape memory. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Phase Transformations, Characterization |