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
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Structural/Functional materials
|
|---|
| Research Institution | Ibaraki University |
|---|
Principal Investigator |
ITOH Goroh 茨城大学, 工学部, 教授 (80158758)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
ITOH Nobuhide 茨城大学, 工学部, 准教授 (70203156)
|
|---|
| Project Period (FY) |
2010 – 2012
|
| Keywords | 金属材料 / 水素 / 水素脆化 / 拡散 / アルミニウム / 鉄鋼材料 |
|---|
| 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.
|
