| Project/Area Number |
22760572
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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 |
Metal making engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
SATO Shigeo 東北大学, 金属材料研究所, 准教授 (40509056)
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| Project Period (FY) |
2010 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
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| Keywords | X線回折 / 転位 / ラインプロファイル解析 / 双晶変形 / 時効析出 / 積層欠陥エネルギー / X線回折法 / ミクロ組織解析 / 転位密度解析 / 双晶誘起塑性鋼 / 析出強化型合金 / 時効硬化 / 集合組織 |
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| Research Abstract |
Dislocations in plastic-deformed metals induce crystal strain, and domains developed by the arrays of the dislocations. When these crystal strain and domain structures are observed by X-ray diffraction, peculiar shapes depending on the diffraction order appear in the line profiles of the X-ray diffraction. In this study, we have developed an X-ray diffraction apparatus optimized for the line profile analysis and have analyzed microstructures of deformed metallic alloys such as iron-based and copper-based alloys by using a recent theory on the line profiles. We have successfully analyzed the correlation between dislocations and twinning induced plasticity, and the effects of dislocations on aging precipitation.
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