| Budget Amount *help |
¥19,240,000 (Direct Cost: ¥14,800,000、Indirect Cost: ¥4,440,000)
Fiscal Year 2013: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2012: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2011: ¥10,660,000 (Direct Cost: ¥8,200,000、Indirect Cost: ¥2,460,000)
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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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