Journal ArticleDOI
Effect of hydrogen on the fracture behavior of high strength steel during slow strain rate test
TLDR
In this paper, the effect of hydrogen on the fracture behavior of quenched and tempered AISI 4135 steel at 1450 MPa was investigated by means of slow strain rate tests on smooth and circumferentially-notched round-bar specimens.About:
This article is published in Corrosion Science.The article was published on 2007-11-01. It has received 306 citations till now. The article focuses on the topics: Hydrogen embrittlement & Stress concentration.read more
Citations
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Hydrogen-assisted decohesion and localized plasticity in dual-phase steel
Motomichi Koyama,Motomichi Koyama,Cemal Cem Tasan,Eiji Akiyama,Kaneaki Tsuzaki,Kaneaki Tsuzaki,Dierk Raabe +6 more
TL;DR: In this article, a high-resolution scanning electron microscopy-based damage quantification technique has been employed to identify strain regimes where damage nucleation and damage growth take place, both with and without hydrogen precharging.
Journal ArticleDOI
Grain size and grain-boundary effects on diffusion and trapping of hydrogen in pure nickel
Abdelali Oudriss,Jordi Creus,J. Bouhattate,Egle Conforto,C. Berziou,C. Savall,Xavier Feaugas +6 more
TL;DR: In this article, the effect of grain size on hydrogen diffusion and trapping mechanisms was investigated for a wide range of grain sizes of non-textured pure nickel, and the effects of grain boundaries on different defects and trapping sites stored in the GBs, and their consequences on hydrogen transport and segregation.
Journal ArticleDOI
Hydrogen embrittlement in different materials: A review
TL;DR: In this article, the authors deal with HE definition, mechanisms which causes HE, subcritical crack growth, the concentration of hydrogen measurement and prevention activities are discussed which act as a barrier for hydrogen diffusion.
Journal ArticleDOI
The synergistic action and interplay of hydrogen embrittlement mechanisms in steels and iron: Localized plasticity and decohesion
TL;DR: In this paper, a review of the synergistic interplay of hydrogen embrittlement mechanisms in STEEL and IR is presented, with a particular emphasis on the proposal of the novel and unified HELP+HEDE model based on the specific microstructural mapping of the dominant HE mechanisms with implications on the fracture process and resulting hydrogen-assisted fracture modes.
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Medium Mn transformation-induced plasticity steels: Recent progress and challenges
Dong-Woo Suh,Sung-Joon Kim +1 more
TL;DR: In this article, the authors highlight the recent advance in strong transformation-induced plasticity (TRIP) steels, which have higher alloying contents compared to the conventional TRIP steels for achieving tensile strength higher than 1 GPa.
References
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Journal ArticleDOI
Effects of hydrogen on the properties of iron and steel
TL;DR: In this paper, the effects of hydrogen on the physical and mechanical properties of iron and steel are reviewed and a new mechanism for the cold work peak for hydrogen in iron is considered.
Journal ArticleDOI
Equilibrium aspects of hydrogen-induced cracking of steels
R.A. Oriani,P.H. Josephic +1 more
TL;DR: In this paper, the threshold pressures, p ∗, of hydrogen and of deuterium gases necessary to cause crack propagation in AISI 4340 steel of 250 ksi yield strength, were determined as functions of plane-strain stress intensity factor K at room temperature.
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Thermal analysis of trapped hydrogen in pure iron
W. Y. Choo,Jai Young Lee +1 more
TL;DR: The relative amount of trapped hydrogen and the activation energy for its evolution from various lattice defects in iron were calculated by monitoring the pressure change caused by release of hydrogen from charged specimens heated at uniform heating rates as discussed by the authors.
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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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The Thermodynamics of Stressed Solids
TL;DR: In this article, the existence of a chemical potential of a mobile component everywhere within a solid within a generalized stress system is demonstrated, as well as also the presence of an immobile component of a stressed body at appropriate interfaces.