Effect of precipitation on two-way shape memory effect of melt-spun Ti50Ni25Cu25 ribbon |
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| Authors: | Yunxiang Tong Yong Liu |
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| Affiliation: | 1. Center for Biomedical Materials and Engineering, College of Materials Science and Chemistry Engineering, Harbin Engineering University, Harbin 150001, China;2. School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 |
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| Abstract: | In the present work, effect of precipitation on two-way shape memory effect and deformation induced martensite stabilization of Ti50Ni25Cu25 ribbon was investigated. The two-way shape memory effect developed as a result of martensite deformation is affected by formation of precipitates. After straining martensite to 5.5%, a two-way shape memory strain of 1.25% was obtained in a sample annealed at 800 °C for 300 s that does not introduce B11 precipitates. Results also show that the deformed Ti50Ni25Cu25 ribbon containing precipitates has multiple-stage transformation characteristics during the first heating. |
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| Keywords: | Ti50Ni25Cu25 melt-spun ribbon Two-way shape memory effect Martensite deformation Martensite stabilization |
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