Prevention of Hydrogen Embrittlement in Steels

The essential facts about the nature of the hydrogen embrittlement of steels have now been known for 140 years. It is diffusible hydrogen that is harmful to the toughness of iron. It follows, therefore, that the harmful influence of diffusible hydrogen can be mitigated by preventing its entry into s...

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Bibliographic Details
Published inISIJ International Vol. 56; no. 1; pp. 24 - 36
Main Author Bhadeshia, Harshad Kumar Dharamshi Hansraj
Format Journal Article
LanguageEnglish
Published The Iron and Steel Institute of Japan 01.01.2016
Subjects
coatings
diffusion barriers
hydrogen embrittlement
hydrogen permeation
hydrogen trapping
steel design
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Summary:The essential facts about the nature of the hydrogen embrittlement of steels have now been known for 140 years. It is diffusible hydrogen that is harmful to the toughness of iron. It follows, therefore, that the harmful influence of diffusible hydrogen can be mitigated by preventing its entry into steel or by rendering it immobile once it penetrates the material. This review deals with the methods that might be implemented to design steels and components that resist hydrogen embrittlement by reducing the intake of hydrogen or rendering it innocuous when it does penetrate the steel.
ISSN:0915-1559
1347-5460
DOI:10.2355/isijinternational.ISIJINT-2015-430