Journal ArticleDOI
Hydrogen-assisted stable crack growth in iron-3 wt% silicon steel
TLDR
In this article, hydrogen-assisted stable crack growth (H-SCG) is associated with cleavage striations of a 300 nm spacing, observed using scanning electron microscopy and atomic force microscopy (AFM).About:
This article is published in Acta Materialia.The article was published on 1996-08-01. It has received 36 citations till now. The article focuses on the topics: Striation & Dislocation.read more
Citations
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Journal ArticleDOI
Hydrogen embrittlement phenomena and mechanisms
TL;DR: In this paper, the relative importance of these mechanisms for different fracture modes and materials are discussed based on detailed fractographic observations and critical experiments, and the evidence supporting various hypotheses, such as those based on hydride formation, hydrogenenhanced decohesion, hydrogen-enhanced localised plasticity, adsorption-induced dislocation emission, and hydrogen-vacancy interactions, are summarised.
Journal ArticleDOI
Hydrogen related failure of steels – a new aspect
TL;DR: In this paper, the role of hydrogen in reducing ductile crack growth resistance is attributed to the increased creation of vacancies on straining, which is supported by a recent finding of amorphisation associated with crack growth.
Journal ArticleDOI
Hydrogen Thermal Desorption Relevant to Delayed-Fracture Susceptibility of High-Strength Steels
TL;DR: In this paper, the authors examined the susceptibility to hydrogen embrittlement of martensitic steels by means of a delayed-fracture test and hydrogen thermal desorption analysis.
Journal ArticleDOI
Lattice defects dominating hydrogen-related failure of metals
TL;DR: The role of hydrogen in hydrogen-related failure has been examined for Inconel 625 and iron by means of tensile testing with interposed unloading and reloading with/without hydrogen charging as discussed by the authors.
Book ChapterDOI
Hydrogen embrittlement (HE) phenomena and mechanisms
TL;DR: In this article, the relative importance of these mechanisms for different fracture modes and materials are discussed based on detailed fractographic observations and critical experiments, and the evidence supporting various hypotheses, such as those based on hydride-formation, hydrogenenhanced decohesion, hydrogen-enhanced localised plasticity, adsorption-induced dislocation- emission, and hydrogen-vacancy interactions, are summarised.
References
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Journal ArticleDOI
Hydrogen-enhanced localized plasticity—a mechanism for hydrogen-related fracture
TL;DR: In this article, a theory of hydrogen shielding of the interaction of dislocations with elastic stress centres is outlined, which can account for the observed hydrogen-enhanced dislocation mobility.
Journal ArticleDOI
Environmentally Assisted Cracking: Overview of Evidence for an Adsorption-Induced Localised-Slip Process,
TL;DR: In this paper, it was shown that hydrogen-assisted cracking occurs because adsorption facilitates the injection of dislocations from crack tips and thereby promotes the coalescence of cracks with voids ahead of cracks.
Journal ArticleDOI
Numerical analysis of hydrogen transport near a blunting crack tip
TL;DR: In this paper, Oriani's equilibrium theory is used to relate the hydrogen in traps (micro-structural defects) to concentration in normal interstitial lattice sites (NILS), and the resulting non-linear transient hydrogen diffusion equations are integrated using a modified backward Euler method.
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