Effect of aging on martensitic transformation behavior of Ti48.8Ni50.8V0.4 alloy |
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| Authors: | Y. X. Tong C. Q. Liang F. Chen L. Li Y. F. Zheng C. Y. Chung |
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| Affiliation: | (1) Center for Biomedical Materials and Engineering, Harbin Engineering University, Harbin, 150001, China;(2) Department of Advanced Materials and Nanotechnology, College of Engineering, Peking University, Beijing, 100871, China;(3) Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China; |
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| Abstract: | In this article, the effect of aging on martensitic transformation of Ti48.8Ni50.8V0.4 alloy was investigated. The results show that the martensitic transformation of the solution-treated shape memory alloy is a typical single-stage transformation process. The transformation temperatures of the samples aged at different temperatures for 0.5 h were lower as compared to that of the solution-treated alloy. With the increase of aging temperature, the transformation temperatures increase. After aging at 500 °C, the samples exhibit a multiple-stage transformation. The samples after aging at 500 °C for more than 5 h resulted in the transformation sequence of A → R→M1 and A → M2 upon cooling and M2 → A and M1 → A upon heating. |
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