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Summarize proposed mechanisms of hydrogen embrittlement and evaluate the experimental evidence supporting their roles across various materials and fracture modes.

June 1, 2012Corrosion Reviews

Hydrogen embrittlement phenomena and mechanisms

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SLS.P. LynchAustralian Regenerative Medicine Institute

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Mechanistic review uncovers diverse cracking mechanisms in steels and alloys, highlighting distinct pathways underlying material failure.

Key Points

Summarize proposed mechanisms of hydrogen embrittlement and evaluate the experimental evidence supporting their roles across various materials and fracture modes.
Synthesized observational and experimental evidence evaluating prominent degradation models across steel and alloy systems.
Assessed mechanism viability using detailed fractographic analysis and critical mechanical testing results.
Identified evidence supporting multiple degradation models, including hydride formation, hydrogen-enhanced decohesion, hydrogen-enhanced localized plasticity, and adsorption-induced dislocation emission.
Observed that the relative dominance of individual embrittlement mechanisms depends directly on the specific alloy system and active fracture mode.

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S.P. Lynch (2012) studied this question.

synapsesocial.com/papers/69d76641aa68b335b4f313ea https://doi.org/10.1515/corrrev-2012-0502

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Hydrogen embrittlement phenomena and mechanisms

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Cite This Study

Hydrogen embrittlement phenomena and mechanisms

Discussion

Member takes

Implication

Key Points

Cite This Study

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