2013 Fiscal Year Final Research Report
Prevention of hydrogen embrittlement by the formation of reversed austenite layer in high strength stainless steel
| Project/Area Number |
24656415
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Structural/Functional materials
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| Research Institution | Kyushu University |
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Principal Investigator |
TAKAKI setsuo 九州大学, 工学(系)研究科(研究院), 教授 (90150490)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 水素脆性 |
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| Research Abstract |
In this research, a meta-stable austenitic stainless steel (Fe-16%Cr-10%Ni) was strengthened by deformation induced martensitic transformation and then only the surface of cold worked material was subjected to local induction heating to cause the reversion from martensite to austenite. As a result, it was found that the austenite layer can be formed in vicinity of the surface of the steel while leaving the martensite inside and the hydrogen permeation into material is effectively suppressed by the austenite layer with a moderate thickness.
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