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The dual role of hydrogen in grain boundary mobility

dc.contributor.authorDing, Yu
dc.contributor.authorZhao, Kai
dc.contributor.authorLin, Meichao
dc.contributor.authorYu, Haiyang
dc.contributor.authorXiao, Senbo
dc.contributor.authorHe, Jianying
dc.contributor.authorZhang, Zhiliang
dc.date.accessioned2023-02-09T12:20:32Z
dc.date.available2023-02-09T12:20:32Z
dc.date.created2023-01-29T20:53:59Z
dc.date.issued2023
dc.identifier.issn0021-8979
dc.identifier.urihttps://hdl.handle.net/11250/3049699
dc.description.abstractABSTRACT The effect of solute hydrogen on shear-coupled grain boundary (GB) migration is investigated with the dislocation-array type Σ25(430)[001] GB and a dual role of hydrogen on GB mobility is unraveled. In the low temperature and high loading rate regime, where hydrogen diffusion is substantially slower than GB motion, GB breaks away from the hydrogen atmosphere and transforms into a new stable phase with highly enhanced mobility. In the reverse regime, hydrogen atoms move along with GB, exerting a drag force on GB and decreasing its mobility. These findings provide rationale for the coexistence of hydrogen hardening and softening observed experimentally in polycrystalline materials.en_US
dc.description.abstractThe dual role of hydrogen in grain boundary mobilityen_US
dc.language.isoengen_US
dc.publisherAIP Publishingen_US
dc.titleThe dual role of hydrogen in grain boundary mobilityen_US
dc.title.alternativeThe dual role of hydrogen in grain boundary mobilityen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.source.volume133en_US
dc.source.journalJournal of Applied Physicsen_US
dc.identifier.doi10.1063/5.0132488
dc.identifier.cristin2117679
dc.relation.projectSigma2: NN9391Ken_US
dc.relation.projectSigma2: NN9110Ken_US
dc.relation.projectNorges forskningsråd: 294689en_US
dc.relation.projectNorges forskningsråd: 294739en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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