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dc.contributor.authorMerson, Evgeni
dc.contributor.authorMyagkikh, Pavel
dc.contributor.authorPoluyanov, Vitaliy
dc.contributor.authorMerson, Dmitri
dc.contributor.authorVinogradov, Alexey
dc.identifier.citationMaterials Science & Engineering: A. 2019, 748 337-346.nb_NO
dc.description.abstractOne of the main challenges impeding wider uptake of magnesium alloys by the industry is their poor resistance to general corrosion and stress-corrosion cracking (SCC), the nature of which is not fully understood. Although SCC is generally associated with hydrogen embrittlement, the experimental data on the possible hydrogen state, concentration and distribution in Mg is scarce, and its role in SCC is unclear. These issues are addressed in the present study using as-cast technically pure Mg as well as wrought ZK60 and AZ31 alloys slow-strain rate tensile tested in air and in corrosive media before and after prestraining. Hydrogen concentration and extraction curves have been obtained and analyzed for the specimens tested in corrosive media. It is found that most part of hydrogen is contained in the corrosion products while the concentration of diffusible hydrogen in the matrix is negligible for all the materials studied. On the basis of fractographic observations combined with gas-analysis and mechanical testing data, it is suggested that SCC of the ZK60 and AZ31 alloys results from brittle cracking of a surface hydride film, while SCC of pure Mg is likely associated with adsorbed hydrogen facilitating ductile fracture.nb_NO
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.titleOn the role of hydrogen in stress corrosion cracking of magnesium and its alloys: Gas-analysis studynb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.source.journalMaterials Science & Engineering: Anb_NO
dc.description.localcode© 2019. This is the authors’ accepted and refereed manuscript to the article. Locked until 31.1.2021 due to copyright restrictions. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
cristin.unitnameInstitutt for maskinteknikk og produksjon

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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal