2010 Fiscal Year Final Research Report
Microscopic mechanism of grain refinement during wear process in single crystals
| Project/Area Number |
20560674
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Material processing/treatments
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| Research Institution | Osaka City University |
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Principal Investigator |
KANEKO Yoshihisa Osaka City University, 大学院・工学研究科, 准教授 (40283098)
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| Co-Investigator(Kenkyū-buntansha) |
HASHIMOTO Satosh 大阪市立大学, 大学院・工学研究科, 教授 (50127122)
VINOGRADOV Alexei 大阪市立大学, 大学院・工学研究科, 准教授 (10283102)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 摩擦 / 強ひずみ加工 / 単結晶 / 結晶粒界 / 超微細結晶材料 / EBSD |
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| Research Abstract |
In order to investigate nucleation and development of grain boundaries during wear process, microstructures near the worn surface of single crystal specimens were analyzed. It is found that low-angle boundaries included in the area distant from the worn surface were generated as a result of rearrangement of dislocations which were introduced from the surface. Grain-boundary character distribution of high-angle boundaries parallel to the worn surface depended strongly on orientation of the single crystals. The characteristic Σ-value distribution of the high-angle boundaries in the single crystals was understood from the lattice rotation occurring around the axis which is normal to the wear direction.
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