| Project/Area Number |
21860010
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Material processing/treatments
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| Research Institution | Tohoku University |
|---|
Principal Investigator |
KAMIKAWA Naoya Tohoku University, 金属材料研究所, 助教 (30530894)
|
|---|
| Project Period (FY) |
2009 – 2010
|
| Project Status |
Completed (Fiscal Year 2010)
|
| Budget Amount *help |
¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | 超微細粒材料 / 超強加工 / 力学特性 / 強化機構 / 強ひずみ加工 |
|---|
| Research Abstract |
The effect of boundary misorientation on tensile behavior of nanostructured aluminium produced by ultrahigh strain deformation and annealing has been investigated. The strength of ultrafine grained samples mainly surrounded by high-angle boundaries is much higher than that of subgrained samples mainly composed of low-angle boundaries, indicating that high-angle boundaries are more effective for strengthening than low-angle boundaries. It has also been suggested that yielding mechanisms in nanostructured metals is different depending on the boundary misorientation distribution in the samples.
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