Hydrogen Embrittlement of Rail Steels

Wuyang, Chu; Li, J. X.; Huang, Chen Hung; Wang, Y. B.; Li, Qiao

doi:10.5006/1.3284046

Cited by 12 publications

(14 citation statements)

References 10 publications

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“…The problem is becoming increasingly important due to the higher susceptibility of modern, highstrength alloys; hydrogen can reduce the toughness of highstrength steels by 90% [20][21][22][23], compromising decades of metallurgical progress. Hydrogen embrittlement is pervasive in numerous applications across engineering sectors, such as bridges [24], buildings [25], cars [26], trains [27], wind turbines [28] and aeroplanes [29]. Moreover, hydrogen embrittlement could jeopardise the future that hydrogen holds as the energy carrier of the future.…”

Section: Hydrogen Embrittlementmentioning

confidence: 99%

Progress and opportunities in modelling environmentally assisted cracking

Martínez‐Pañeda

2021

RILEM Tech Lett

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Environmentally assisted cracking phenomena are widespread across the transport, defence, energy and construction sectors. However, predicting environmentally assisted fractures is a highly cross-disciplinary endeavour that requires resolving the multiple material-environment interactions taking place. In this manuscript, an overview is given of recent breakthroughs in the modelling of environmentally assisted cracking. The focus is on the opportunities created by two recent developments: phase field and multi-physics modelling. The possibilities enabled by the confluence of phase field methods and electro-chemo-mechanics modelling are discussed in the context of three environmental assisted cracking phenomena of particular engineering interest: hydrogen embrittlement, localised corrosion and corrosion fatigue. Mechanical processes such as deformation and fracture can be coupled with chemical phenomena like local reactions, ionic transport and hydrogen uptake and diffusion. Moreover, these can be combined with the prediction of an evolving interface, such as a growing pit or a crack, as dictated by a phase field variable that evolves based on thermodynamics and local kinetics. Suitable for both microstructural and continuum length scales, this new generation of simulation-based, multi-physics phase field models can open new modelling horizons and enable Virtual Testing in harmful environments.

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Section: Hydrogen Embrittlementmentioning

confidence: 99%

Progress and opportunities in modelling environmentally assisted cracking

Martínez‐Pañeda

2021

RILEM Tech Lett

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“…Figure 5 shows the hydrogen permeation curves for the samples with different pre-strain of 0 (asreceived), 1, 2 and 3%. After testing, apparent hydrogen diffusion coefficients were calculated using the following formula [2]:…”

Section: Hydrogen Permeation Testmentioning

confidence: 99%

“…For pure iron, it is calculated that hydrogen can move together with dislocation motion when the strain rate is less than 10 −7 ρ H s −1 [2], where ρ H is the movable dislocation density. For martensitic steel, the density of dislocation is very large, especially after tensile to plastic deformation.…”

Section: Relationship Between L and εmentioning

confidence: 99%

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Hydrogen redistribution under stress-induced diffusion and corresponding fracture behaviour of a structural steel

Kan

Yang

Wang

et al. 2017

Materials Science and Technology

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Hydrogen redistribution under stress-induced hydrogen diffusion and corresponding fracture behaviour of a 960 MPa grade martensitic steel were studied. Slow strain rate tensile (SSRT) tests after hydrogen pre-charging were performed and the fracture surface was observed and analysed. The strain rate ranged from 10−6 to 10−4 s−1. In the pre-charged sample with a certain hydrogen content of 0.62 ppm, hydrogen distribution was homogeneous before the SSRT test. After tensile testing, brittle fracture features appeared in the centre of the fracture surface, while ductile features appeared in the surrounding area. Brittle region size increased with the strain rate slowing down in the range from 10−4 to 5 × 10−6 s−1, while it stabilised at the strain rate slower than 5 × 10−6 s−1. Relationship between the strain rate and the brittle region size was established and discussed based on the present data of hydrogen content in the material. This paper is part of a thematic issue on Hydrogen in Metallic Alloys

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“…They are attributed to hydrogen pickup during melting operations when the melt has a higher solubility for hydrogen than the solid alloy. During cooling from the melt, hydrogen diffuses to and precipitates in voids and discontinuities, producing the features that result from the decreased solubility of hydrogen in the solid metal [51].…”

Section: General Classification Of Hydrogen Damagementioning

confidence: 99%

Corrosion - induced hydrogen embrittlement in high - strength al - alloys

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Hydrogen Embrittlement of Rail Steels

Cited by 12 publications

References 10 publications

Progress and opportunities in modelling environmentally assisted cracking

Progress and opportunities in modelling environmentally assisted cracking

Hydrogen redistribution under stress-induced diffusion and corresponding fracture behaviour of a structural steel

Corrosion - induced hydrogen embrittlement in high - strength al - alloys

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