2013 Fiscal Year Final Research Report
Develpment of Biomedical Ti-based Shape Memory and Superelastic Alloys
| Project/Area Number |
23360300
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Structural/Functional materials
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| Research Institution | University of Tsukuba |
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Principal Investigator |
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| Research Collaborator |
KIM Hee Young 筑波大学, 数理物質系, 准教授 (20333841)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | 新機能材料 / 形状記憶合金 |
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| Research Abstract |
In order to develop novel biomedical shape memory alloys, the effects of composi-
tion and microstructure on martensitic transformation temperatures, shape memory and superelastic proper- ties and mechanical properties of Ti-base alloys were systematically investigated. Through the optimiza- tion of composition and microstructures by thermo-mechanical treatment, a larger superelastic recovery strain larger than 5% was obtained in Ti-Nb-Zr-Sn and Ti-Nb-Zr-Al alloys. The suppression of omega phase was very useful to decrease the stress hysteresis and to increase superelastic recovery strain in Ti-basedsuperelastic alloys.
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