Preventing hydrogen embrittlement in stainless steel by means of compressive stress induced by cavitation peening

Takakuwa, Osamu; Soyama, Hitoshi

doi:10.1049/joe.2015.0065

Cited by 4 publications

(3 citation statements)

References 15 publications

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“…There is a well-built linear correlation between compressive stresses depth profile and hydrogen effect in austenitic stainless steel. 145 When the material is cavitation peened prior to hydrogen charging in 0.5 mol/L sulphuric acid solution at temperature 50 °C, the compressive residual stress which is beyond or nearly equal to yield stress significantly decreases the attack by hydrogen. The suppression of hydrogen attack increases with a rise in the compressive residual stress.…”

Section: Methodsology For Suppressing Hementioning

confidence: 99%

A critical appraisal of laser peening and its impact on hydrogen embrittlement of titanium alloys

Rajyalakshmi

Swaroop

2019

Proceedings of the Institution of Mechanical Engineers, Part B:

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Many efforts have been made to understand the effects of hydrogen on titanium alloys, resulting in an abundance of theoretical models and papers. Titanium alloys are crucial advanced materials that provide an excellent combination of a high strength-to-weight ratio and good corrosion behaviour even though they are reasonable to corrosion attack. Titanium alloys are susceptible to hydrogen embrittlement when comes into contact with hydrogen, and galvanic pair with an active metal current, or the pH is greater than 12 or less than 3 or an impressed current. In view of the fact that hydrogen behaves differently with α and β phases, hydrogen degradation may vary markedly in titanium alloys. Hydrogen diminishes the corrosion and erosion resistance and fatigue life of in-service titanium components. A laser peening or laser shock peening is a novel technique for making the metal surfaces and sub-layers densify. It evokes that laser shock peening adoption results in yielding and plastic deformation, thereby creating high compressive residual stresses extending below the surface of the material which is desirable for hydrogen embrittlement resistance and reduction of crack initiation and growth of the component. This article is a review of information relating hydrogen embrittlement of titanium alloys and surface modification technique which influence the strength potential of titanium alloys.

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Section: Methodsology For Suppressing Hementioning

confidence: 99%

A critical appraisal of laser peening and its impact on hydrogen embrittlement of titanium alloys

Rajyalakshmi

Swaroop

2019

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…The ability to trap hydrogen within a material provides a level of intrinsic HE resistance which can be further enhanced by a number of extrinsic approaches, e.g. hydrogen bake-out to remove hydrogen pre-service or the application of either a coating [2,8] or surface strain [15][16][17] as a hydrogen ingress barrier. However, to both improve the effectiveness of these strategies and broaden their industrial applications, a better understanding of the atomic-scale mechanisms driving hydrogen trapping in steel is of great importance.…”

Section: Introductionmentioning

confidence: 99%

“…Whilst key to providing atom-scale imaging data on hydrogen, the limited field of view (typically 80 x 80 x 200 nm), and resolution (~1 nm) implies that the method is best suited as a high-resolution method to complement other techniques. This is key to fully understanding the effect of HE, where information such as strain data may be critical [15][16][17]. However, two significant limitations in the use of APT for hydrogen imaging remain, namely the ambiguity between the signal from hydrogen genuinely within the material and that within the environment of the vacuum chamber [29,30], and secondly there can be hydrogen signal loss due to the extremely fast diffusion of hydrogen during sample transfer.…”

Section: Introductionmentioning

confidence: 99%

Observing hydrogen in steel using cryogenic atom probe tomography: A simplified approach

Chen

Bagot

Moody

et al. 2019

International Journal of Hydrogen Energy

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This work demonstrates a new method to enable cryogenic atom probe tomography (cryo-APT) for the investigation of hydrogen in a high-strength steel, specifically to detect hydrogen localised to V-Mo-Nb carbides finely dispersed in the matrix. Prior cryogenic experiments required highly customised atom probe instrumentation to enable samples to be kept at cryogenic temperatures throughout the vacuum transfer process. Here we use an alternative approach without modification of the atom probe instrument itself, whilst still achieving hydrogen mapping.Additionally, we use this method to investigate the roles of solvent and solutes within the charging electrolyte, and we demonstrate that deuterated solute is not required when using heavy water as solvent, expanding the range of electrolytes that can be utilised in APT hydrogen charging experiments. This work reduces the experimental requirements for cryo-APT and makes the technique accessible to all APT equipped laboratories.

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Hydrogen Resistant Ferritic and Martensitic Steels. Part I: The Origin of Embrittlement

Turk¹,

Rivera-Dı́az-del-Castillo²

2022

Encyclopedia of Materials: Metals and Alloys

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Preventing hydrogen embrittlement in stainless steel by means of compressive stress induced by cavitation peening

Cited by 4 publications

References 15 publications

A critical appraisal of laser peening and its impact on hydrogen embrittlement of titanium alloys

A critical appraisal of laser peening and its impact on hydrogen embrittlement of titanium alloys

Observing hydrogen in steel using cryogenic atom probe tomography: A simplified approach

Hydrogen Resistant Ferritic and Martensitic Steels. Part I: The Origin of Embrittlement

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