2012 Fiscal Year Final Research Report
Elucidation of the mechanism for hydrogen embrittlement in terms of the behavior of diffusive hydrogen
| Project/Area Number |
22560689
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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 |
Structural/Functional materials
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| Research Institution | Ibaraki University |
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Principal Investigator |
ITOH Goroh 茨城大学, 工学部, 教授 (80158758)
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| Co-Investigator(Kenkyū-buntansha) |
ITOH Nobuhide 茨城大学, 工学部, 准教授 (70203156)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 金属材料 / 水素 / 水素脆化 / 拡散 / アルミニウム / 鉄鋼材料 |
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| Research Abstract |
Behavior of diffusive hydrogen was investigated by means of tritium autoradiography that can visualize the location of hydrogen with respect to the microstructure. In a ferritic stainless steel, greater amount of hydrogen was detected at grain boundaries than inside the grains when stress-loaded. The invading hydrogen was deduced to be transferred and trapped to the grain boundaries. In Al-Mg-Zn base alloys, the amount of invading hydrogen was increased by stress loading. The invasion site was the matrix and second phase composed of Al-Cu-Fe.
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Research Products
(8 results)
