Martensitic Transformation and Shape Memory Effect of Ti–16Nb–xZr (x = 0–8) Alloys
- Авторы: Sun B.1, Meng X.1, Gao Z.1, Cai W.1
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Учреждения:
- School of Materials Science and Engineering, Harbin Institute of Technology
- Выпуск: Том 120, № 8 (2019)
- Страницы: 750-755
- Раздел: Structure, Phase Transformations, and Diffusion
- URL: https://journals.rcsi.science/0031-918X/article/view/168623
- DOI: https://doi.org/10.1134/S0031918X19080179
- ID: 168623
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Аннотация
The influence of Zr content on the martensitic transformation behavior and shape memory effect (SME) was investigated to develop Ti–Nb–Zr high-temperature shape memory alloys. The addition of Zr decreases the peak temperature of the reverse martensitic transformation (Ap) by 19οC with 1 at % increase of Zr in the Ti–16Nb–xZr (x = 0–8) alloys, while it improves the stability of martensitic transformation by suppressing the formation of ω phase. At the same time, SME is enhanced greatly owing to the solution strengthening effect of Zr and the increase in the theoretical limit of transformation strain. The optimal Zr content for getting a high martensitic transformation temperature, an enhanced phase transformation stability and a good SME is determined to be 6 at %, where the martensitic transformation onset temperature (Ms) is 252οC and shape recovery ratio at the pre-strain of 8 is 90%.
Об авторах
B. Sun
School of Materials Science and Engineering, Harbin Institute of Technology
Email: xlmeng@hit.edu.cn
Китай, Harbin, 150001
X. Meng
School of Materials Science and Engineering, Harbin Institute of Technology
Автор, ответственный за переписку.
Email: xlmeng@hit.edu.cn
Китай, Harbin, 150001
Z. Gao
School of Materials Science and Engineering, Harbin Institute of Technology
Email: xlmeng@hit.edu.cn
Китай, Harbin, 150001
W. Cai
School of Materials Science and Engineering, Harbin Institute of Technology
Email: xlmeng@hit.edu.cn
Китай, Harbin, 150001