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dc.contributor.authorWang, Dong
dc.contributor.authorLu, Xu
dc.contributor.authorDeng, Yun
dc.contributor.authorGuo, Xiaofei
dc.contributor.authorBarnoush, Afrooz
dc.date.accessioned2019-03-20T07:30:07Z
dc.date.available2019-03-20T07:30:07Z
dc.date.created2019-01-11T10:21:51Z
dc.date.issued2018
dc.identifier.issn1359-6454
dc.identifier.urihttp://hdl.handle.net/11250/2590729
dc.description.abstractIn-situ electrochemical nanoindentation was applied to study the effect of hydrogen on the mechanical properties of Fe-22Mn-0.6C TWIP steel at nanoscale. Distinctive behaviors in three defined grain orientations: (001), (101), and (111) were investigated in a sequence of air, hydrogen ingress, and hydrogen egress processes. The obvious pop-in load drop caused by introducing hydrogen was analyzed using the classical dislocation theory in combination with the “Defactant” model, wherein hydrogen-enhanced homogeneous dislocation nucleation through the reduction of dislocation line energy and stacking fault energy were proposed as the reasons. The dependence of pop-in behaviors on crystallographic orientations was also discussed. Tabor relation-based models were applied to analyze the nanohardness increment, which was related to the hydrogen-enhanced lattice friction and the hydrogen-reduced plastic zone size. The different recovery behaviors of pop-in load and nanohardness during hydrogen egress were assessed according to the different amounts of residual hydrogen in the corresponding affected zone.nb_NO
dc.language.isoengnb_NO
dc.publisherElseviernb_NO
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.titleEffect of hydrogen on nanomechanical properties in Fe-22Mn-0.6C TWIP steel revealed by in-situ electrochemical nanoindentationnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.volume166nb_NO
dc.source.journalActa Materialianb_NO
dc.identifier.doihttps://doi.org/10.1016/j.actamat.2018.12.055
dc.identifier.cristin1654683
dc.description.localcode© 2019. This is the authors’ accepted and refereed manuscript to the article. Locked until 2.1.2021 due to copyright restrictions. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/nb_NO
cristin.unitcode194,64,92,0
cristin.unitnameInstitutt for maskinteknikk og produksjon
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode2


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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
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