| Project/Area Number |
23560845
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Structural/Functional materials
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| Research Institution | Ashikaga Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Keywords | ナノ結晶材料 / 疲労 / 結晶粒界 / 粒界工学 / 電析 / 疲労特性 / 疲労破壊 / ナノ結晶金属材料 |
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| Research Abstract |
The fatigue property and fracture in nanocrystalline nickel, nickel based alloy and iron based alloy which produced by electrodeposition was experimentally investigated in relation to microstructural change by cyclic stress, to systematically clarify the fatigue property and fatigue fracture mechanism in nanocrystalline metallic materials.
As a result, these nanocrystalline materials show about 2 times higher fatigue limit than polycrystalline materials with conventional grain structure. The changes in grain size, texture and grain boundary microstructure by cyclic stress were quantitatively evaluated. It was concluded that the fatigue property and fracture process was dominated by these microstructural changes.
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