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ToolsZhang, J. T., Hu, P., Wang, S. B., Zhang, Y., Huang, Y. and Ding, H., 2023. Study on a NiTiHfTa shape memory alloy with high-pressure torsion and subsequent annealing. In: Dong, H. and Yu, H., eds. Proceedings of SPIE: Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023). Bellingham: SPIE, 15.
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DOI: 10.1117/12.3007104
Abstract
An alloy with the composition of 49.6Ni-35.4Ti-9Hf-6Ta (at%) was processed by high-pressure torsion (HPT) and post-HPT annealing treatment. The microhardness of HPT-processed samples increased obviously, and amorphous feature appeared in 2 turns sample. The microhardness further increased and amorhozation was enhanced in 16 turns sample. After annealing at 750 ℃ for 3h, almost full crystallization occurs in 16 turns sample. In-situ high temperature X-ray diffraction experiment reveals that martensite to austenite transformation took place, indicating the alloy would exhibit SMA effect.
| Item Type: | Book Section |
|---|---|
| Volume: | 12801 |
| Additional Information: | Conference: 9-11 June 2023, Dalian, China. |
| Uncontrolled Keywords: | NiTiHfTa; shape memory alloy; high-pressure torsion; annealing |
| Group: | Faculty of Science & Technology |
| ID Code: | 39095 |
| Deposited By: | Symplectic RT2 |
| Deposited On: | 09 Feb 2024 13:57 |
| Last Modified: | 09 Feb 2024 13:58 |
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