Stress-responsive self-strengthening of biomedical metals with self-tunable elastic modulus--Potential of stress-induced omega phase to improve mechanical properties
| Project/Area Number |
25630004
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Tohoku University |
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Principal Investigator |
NAKAI Masaaki 東北大学, 金属材料研究所, 准教授 (20431603)
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| Co-Investigator(Kenkyū-buntansha) |
NARITA Kengo 東北大学, 金属材料研究所, 助教 (70632339)
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| Co-Investigator(Renkei-kenkyūsha) |
ISHIMOTO Takuya 大阪大学, 大学院工学研究科, 講師 (50508835)
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 生体用金属材料 / チタン合金 / 変形誘起相変態 / オメガ相 / 疲労特性 / 変形誘起オメガ相変態 / 力学的特性 |
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| Outline of Final Research Achievements |
In the metals with self-tunable elastic modulus developed by our group, the elastic modulus at the deformed part is increased by occurring the deformation-induced ω phase transformation. In this study, we tried to achieve the increase in strength and durability using this specific property. One of the representative metals with self-tunable elastic modulus, Ti-12Cr alloy, was used for the evaluation of fatigue properties. As the result, even though the solution treated condition, high fatigue strength could be obtained for Ti-12Cr alloy. Low durability is a weak point of biomedical β-type titanium alloys, but Ti-12Cr alloy is possible to overcome such the weak point.
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Report
(3 results)
Research Products
(37 results)
