2011 Fiscal Year Final Research Report
Study on residual micro-stresses and elastic anisotropy
| Project/Area Number |
21560081
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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 |
Materials/Mechanics of materials
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| Research Institution | Niigata University |
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Principal Investigator |
SUZUKI Kenji 新潟大学, 人文社会・教育科学系, 教授 (30154537)
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| Project Period (FY) |
2009 – 2011
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| Keywords | X線 / 残留応力 / 弾性異方性 / オーステナイト系ステンレス鋼 / 微視的応力 / 回折面依存性 / 塑性変形 |
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| Research Abstract |
The used material was austenitic stainless steel, SUS316L, which has an elastic anisotropy. Residual stresses by quasi-static plastic deformation, high strain rate deformation and peening, were measured by hard synchrotron X-rays in SPring-8. The residual stress by each lattice plane was different from that by other lattice planes. The residual micro-stress is caused by elastic anisotropy. In addition, we proposed a diffraction spot trace method to measure the stress in materials with coarse grains using the area detector, PILATUS, and a new rotating slits system.
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