| Project/Area Number |
25820367
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Material processing/Microstructural control engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
CHO Ken 東北大学, 金属材料研究所, 助教 (00633661)
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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 |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Keywords | 高強度化 / 低弾性率化 / 非熱的ω相 / 変形誘起ω相 / 固溶強化 / 気孔率制御 / 結晶構造制御 / 高引張強度 |
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| Outline of Final Research Achievements |
Microstructures and mechanical properties, including tensile properties and Young’s modulus, of Ti-Mn alloys fabricated by the metal injection molding were investigated.
It is found that the formation of athermal ω phase and solid solution strengthening by Mn are reasons for the low-Young’s modulus and high-strength.
The Ti-Mn alloys fabricated by the metal injection molding show lower Young’s modulus and higher-strength compared with Ti-6Al-4V alloy, which is the most widely used titanium alloy. Moreover, the ultimate tensile strength and 0.2% proof stress of Ti-13Mn increase from 888 MPa to 1850 MPa and from 827 MPa to 1820 MPa, respectively, after cold-rolling at a reduction ratio of 90%. These strength are almost highest strength for Ti alloys.
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