Hydrogen embrittlement phenomena and mechanisms
- 1 January 2012
- journal article
- research article
- Published by Walter de Gruyter GmbH in Corrosion Reviews
- Vol. 30 (3-4), 105-123
- https://doi.org/10.1515/corrrev-2012-0502
Abstract
Mechanisms of hydrogen embrittlement in steels and other materials are described, and the evidence supporting various hypotheses, such as those based on hydride formation, hydrogen-enhanced decohesion, hydrogen-enhanced localised plasticity, adsorption-induced dislocation emission, and hydrogen-vacancy interactions, are summarised. The relative importance of these mechanisms for different fracture modes and materials are discussed based on detailed fractographic observations and critical experiments.Keywords
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