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dc.contributor.authorLiu, Siqi
dc.contributor.authorChang, Zexin
dc.contributor.authorFu, Yuequn
dc.contributor.authorliu, yuyu
dc.contributor.authorLin, Meichao
dc.contributor.authorRen, Xiaobo
dc.contributor.authorWang, Wenxian
dc.contributor.authorZhang, Zhiliang
dc.contributor.authorHe, Jianying
dc.date.accessioned2022-05-30T12:40:57Z
dc.date.available2022-05-30T12:40:57Z
dc.date.created2022-05-03T15:47:30Z
dc.date.issued2022
dc.identifier.citationMaterials & Design, 2022, 218, 1-10en_US
dc.identifier.issn0264-1275
dc.identifier.urihttps://hdl.handle.net/11250/2996866
dc.description.abstractNanoscale creep behaviors of metallic glasses (MGs) have gathered considerable interests in recent years, owing to their distinct atomistic mechanisms of plasticity. Additive manufacturing (AM) is a burgeoning technique for manufacturing MGs, the nanoscale creep characteristics and creep mechanism of the AM-ed MGs, however, remain ambiguous. In this work, the nanoscale creep behavior and creep size effect of a selective laser melted (SLM-ed) Zr-based MG were investigated by using nanoindentation. In an effort to gain more insight into the creep behaviors, the creep compliance and creep retardation spectra were extracted. The creep stress exponent (n) and shear transformation zone (STZ) volume, as the indicators of the creep mechanism, were estimated. The values of n are in the range of 2-3, and STZ volumes are around 2 nm3. The creep resistance of the MG was found to decrease with the increasing applied peak loads. A potential mechanism for this creep size effect was revealed: the smaller of the STZ volume, as well as the greater ratio of plastic flow under the higher maximum load, are responsible for the decreasing tendency of creep resistance. This research gives a comprehensive understanding of the atomistic mechanisms in the AM-ed MG during the nanoscale creep deformation process and can serve as a reference for improving the plasticity and further engineering applications.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.subjectCreep behavioren_US
dc.subjectNanoindentationen_US
dc.subjectShear transformation zoneen_US
dc.subjectSelective laser meltingen_US
dc.subjectAdditive manufacturingen_US
dc.subjectBulk metallic glassen_US
dc.titleNanoscale creep behavior and its size dependency of a Zr-based bulk metallic glass manufactured by selective laser meltingen_US
dc.title.alternativeNanoscale creep behavior and its size dependency of a Zr-based bulk metallic glass manufactured by selective laser meltingen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright: 2022 The Authors. Published by Elsevier Ltd.en_US
dc.source.pagenumber10en_US
dc.source.volume218en_US
dc.source.journalMaterials & designen_US
dc.identifier.doi10.1016/j.matdes.2022.110723
dc.identifier.cristin2021117
dc.relation.projectNorges forskningsråd: 251068en_US
dc.relation.projectNorges forskningsråd: 295864en_US
dc.source.articlenumber110723en_US
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.fulltextoriginal
cristin.qualitycode1


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