| Project/Area Number |
21760559
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Structural/Functional materials
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| Research Institution | Ehime University |
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Principal Investigator |
SAKAMOTO Tatsuaki Ehime University, 大学院・理工学研究科, 講師 (80403848)
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| Project Period (FY) |
2009 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2009: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Keywords | チタン合金 / 時効析出 / 相分解 / 透過型電子顕微鏡 / オメガ相 / 相分離 / ラメラ組織 / 表面起伏 / β型チタン合金 / チタン-アルミニウム合金 / 二相分離 / ウィドマンシュテッテン組織 |
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| Research Abstract |
As for β-type Ti-6.8Mo-4.5Fe-1.5Al(mass%)alloy, a new path of phase transformation was found. Two-step aging gives rise to precipitation of β' phase which does not precipitate during single-step aging. This result is important for controlling microstructure in β-type Ti alloys. As for Ti-48.5at%Al, crystallographic data of Widmanstatten structure, such as habit plane and volume fraction of constituent phases, were obtained. These results are important for clarifying mechanism of formation of Widmanstatten structure.
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