Atomic-level crystallization in selective laser melting fabricated Zr-based metallic glasses

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dc.contributor.authorZhang, Yue
dc.contributor.authorLiu, Haishun
dc.contributor.authorMo, Jinyong
dc.contributor.authorWang, Mingzi
dc.contributor.authorChen, Zhe
dc.contributor.authorHe, Yezeng
dc.contributor.authorYang, Weiming
dc.contributor.authorTang, Chunguang
dc.date.accessioned2022-11-30T05:28:18Z
dc.date.issued2019
dc.date.updated2021-11-28T07:30:09Z
dc.description.abstractAs a promising additive manufacturing technique, selective laser melting (SLM) provides the possibility of fabricating metallic glassy components free of the constraints of geometrical complexity and dimensions. However, unexpected crystallization greatly affects the microstructure and degrades the mechanical performance of SLM-fabricated metallic glasses (MGs). To clarify the crystallization mechanism and the effect of laser processing on the crystallization, we investigate the atomic-level crystallization in the SLM Zr90Cu10 MG by using molecular dynamics simulations. The results show that crystallization highly related to scan speed lies in the atomic-level cluster changes. Lower scan speed leads to a dramatically increased fraction of the BCC crystal phase, accompanied by the nucleation of a few HCP and FCC crystal phases. As scan speed increases, more icosahedron-like clusters are formed, leading to the formation of the MG, while the nucleation of the crystal phase is suppressed. The suppression of crystallization is further attributed to a higher average temperature variation rate induced by higher scan speed, which reduces the relaxation time, preventing the nucleation and growth of crystal phases. This work contributes to the understanding of the crystallization in MGs during the SLM process at the atomic level, providing guidance to suppress the crystallization in the SLM process of desired metallic glassy components.en_AU
dc.description.sponsorshipThis work was supported by the Xuzhou Key Research & Development Program (KC17015), and the China Postdoctoral Science Foundation (2018T110569 and 2018M630623).en_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn1463-9076en_AU
dc.identifier.urihttp://hdl.handle.net/1885/281418
dc.language.isoen_AUen_AU
dc.publisherRoyal Society of Chemistryen_AU
dc.rightsThis journal is © the Owner Societies 2019en_AU
dc.sourcePhysical Chemistry Chemical Physicsen_AU
dc.titleAtomic-level crystallization in selective laser melting fabricated Zr-based metallic glassesen_AU
dc.typeJournal articleen_AU
local.bibliographicCitation.issue23en_AU
local.bibliographicCitation.lastpage12413en_AU
local.bibliographicCitation.startpage12406en_AU
local.contributor.affiliationZhang, Yue, China University of Mining and Technologyen_AU
local.contributor.affiliationLiu, Haishun, China University of Mining and Technologyen_AU
local.contributor.affiliationMo, Jinyong, China University of Mining and Technologyen_AU
local.contributor.affiliationWang, Mingzi, China University of Mining and Technologyen_AU
local.contributor.affiliationChen, Zhe, China University of Mining and Technologyen_AU
local.contributor.affiliationHe, Yezeng, China University of Mining and Technologyen_AU
local.contributor.affiliationYang, Weiming, China University of Mining and Technologyen_AU
local.contributor.affiliationTang, Chunguang, College of Science, ANUen_AU
local.contributor.authoremailrepository.admin@anu.edu.auen_AU
local.contributor.authoruidTang, Chunguang, u1082419en_AU
local.description.embargo2099-12-31
local.description.notesImported from ARIESen_AU
local.identifier.absfor000000 - Internal ANU use onlyen_AU
local.identifier.ariespublicationu3102795xPUB4818en_AU
local.identifier.citationvolume21en_AU
local.identifier.doi10.1039/c9cp02181gen_AU
local.identifier.scopusID2-s2.0-85067285434
local.identifier.thomsonIDWOS:000478994100034
local.identifier.uidSubmittedByu3102795en_AU
local.publisher.urlhttps://pubs.rsc.org/en_AU
local.type.statusPublished Versionen_AU

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