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International Hydrogen Conference (IHC 2012): Hydrogen-Materials Interactions

Editor
B. P. Somerday
B. P. Somerday
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P. Sofronis
P. Sofronis
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ISBN:
9780791860298
No. of Pages:
844
Publisher:
ASME Press
Publication date:
2014

An experimental and numerical study of hydrogen effects on the failure of AlZnMg alloys is presented. The material is pre-charged in H and notched samples are loaded at a various strain rates. For the lowest strain rate, brittle intergranular failure is observed. H-effects diminish with increasing strain rate. Beyond a critical strain rate, H-embrittlement is no longer operating and ductile failure is observed. Calculations are carried out to investigate the distribution of H during crack propagation. For low strain rates, the equilibrium distribution of H is always observed. A critical crack propagation rate is evidenced for which the concentration of...

Introduction
Experimental Setup
Experimental Results
Simulation Methodology
Hydrogen Distribution around a Moving Crack Tip
Conclusions
Acknowledgements
References
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