2013 Fiscal Year Final Research Report
New understanding of deformation and recrystallization based on single-crystal stress measurement
| Project/Area Number |
23560088
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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 |
Materials/Mechanics of materials
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| Research Institution | The University of Tokushima |
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Principal Investigator |
OKADA Tatsuya 徳島大学, ソシオテクノサイエンス研究部, 教授 (20281165)
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| Co-Investigator(Kenkyū-buntansha) |
HANABUSA Takao 徳島大学, 大学院ソシオテクノサイエンス研究部, 名誉教授 (20035637)
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| Research Collaborator |
SHIRO Ayumi 日本原子力研究開発機構, 博士研究員 (60707446)
BUNYA Hirotomo 徳島大学, 大学院先端技術科学教育部, 院生
KATO Shinya 徳島大学, 大学院先端技術科学教育部, 院生
KAWANO Tomoya 徳島大学, 大学院先端技術科学教育部, 院生
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| Project Period (FY) |
2011 – 2013
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| Keywords | 残留応力 / 塑性変形 / 再結晶 |
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| Research Abstract |
The distribution of stress/strain in <111> aluminum single crystals was measured at as-grown, 8% tensile deformation, and post-deformation annealing stages, by using synchrotron radiation. A typical as-grown single crystal was composed of three sub-grains bounded by sub-boundaries. After 8% tensile deformation, the sub-grained structure remained. The residual stress approximately of 5MPa was randomly distributed in each sub-grain. The crystal quality of recrystallized grains formed after 753K annealing was better by far than that of the as-grown crystal. By using the synchrotron radiation, it was possible to measure the stress/strain with very high resolution and accuracy.
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