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ASME Press Select Proceedings
International Hydrogen Conference (IHC 2016): Materials Performance in Hydrogen Environments
ISBN:
9780791861387
No. of Pages:
800
Publisher:
ASME Press
Publication date:
2017
eBook Chapter
Effect of Hydrogen Pressure on Fatigue Crack Growth and Hydrogen Accumulation Behavior of High Strength Steel
Page Count:
7
-
Published:2017
Citation
Ishikawa, N, Nagao, A, Ohmi, T, & Yokobori, AT. "Effect of Hydrogen Pressure on Fatigue Crack Growth and Hydrogen Accumulation Behavior of High Strength Steel." International Hydrogen Conference (IHC 2016): Materials Performance in Hydrogen Environments. Ed. Somerday, BP, & Sofronis, P. ASME Press, 2017.
Download citation file:
The growth rate of fatigue cracks is accelerated under high pressure hydrogen because of hydrogen embrittlement. Hydrogen diffusion is enhanced by a hydrostatic stress field, and an accumulation of hydrogen in the fracture point is necessary to cause hydrogen embrittlement. In this paper, fatigue crack growth behavior under different hydrogen pressure was first investigated. Hydrogen diffusion behavior was analyzed by a finite element analysis based on the Fick’s diffusion theory with a modification in the stress gradient term. Fatigue crack growth rate was accelerated by higher pressure because of increased hydrogen concentration around the crack tip region. Clear relationship was...
Introduction
Fatigue Crack Growth Behavior Under High Pressure Hydrogen
Hydrogen Diffusion Analysis Around Crack Tip Region
Conclusions
References
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