Effects of deformation on hydrogen absorption and desorption properties of titanium

Suzuki, Hiroshi; Taniguchi, Hisashi; Hanada, Nobuko; Takai, Kenichi; Hagihara, Yukito

doi:10.1016/j.jallcom.2010.12.034

Cited by 4 publications

(1 citation statement)

References 16 publications

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“…Crevice corrosion in titanium, nickel alloys and stainless steels due to absorption of hydrogen made them severely limit their use for marine and dental applications. 91–99 It can result in the failure of parts by passive film penetration and failure due to HIC improved hydrogen transport and absorption by titanium. 100 The appreciable way to cut hydrogen absorption through this route is to alloy the metal with excellent crevice corrosion–resistant alloy.…”

Section: Forms Of Hydrogen-induced Damagesmentioning

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: Forms Of Hydrogen-induced Damagesmentioning

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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Structure and mobility of <a>-type screw dislocation in presence of H in α-Ti from first-principles

Zhou

et al. 2023

Acta Materialia

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A numerical model to assess the role of crack-tip hydrostatic stress and plastic deformation in environmental-assisted fatigue cracking

Baragetti

Villa

2017

Corrosion Reviews

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To better understand the mechanics of environmentally assisted cracking, and particularly hydrogen embrittlement, a correct description of the hydrostatic stress field is indispensable. The concentration of hydrogen in the proximity of the crack tip is indeed dependent of the hydrostatic stress effect on the microstructural lattice of the material. The overall parameters of the hydrostatic stress, including peak value, its location, gradient, and distribution size are fundamental to assess the effect on hydrogen distribution near the crack tip, specifically considering hydrogen-enhanced decohesion mechanism, or the HEDE mechanism. Hydrostatic stress is hence widely analysed in studies related to hydrogen embrittlement contribution in stress corrosion cracking or corrosion fatigue of metallic alloys. However, recent studies highlighted that the hydrogen-enhanced local plasticity (HELP) mechanism can be more relevant than HEDE in hydrogen-assisted fatigue failure of metallic alloys. In order to investigate the contribution of the HELP mechanism, detailed finite element modelling is reported for notched Ti-6Al-4V specimens, based on experimental fatigue data. The material is modelled with elastic-perfectly plastic behaviour, reproducing actual geometry of the notches and the fatigue crack, from measurements and replicas conducted during testing. Strain data are obtained in initial and final crack configuration, to discuss the HELP contribution on environmentally assisted cracking, and compare it with HEDE contribution linked to hydrostatic stress.

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Effects of deformation on hydrogen absorption and desorption properties of titanium

Cited by 4 publications

References 16 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

Structure and mobility of <a>-type screw dislocation in presence of H in α-Ti from first-principles

A numerical model to assess the role of crack-tip hydrostatic stress and plastic deformation in environmental-assisted fatigue cracking

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