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Article: Cooling rate dependence of structural order in Ni62Nb38 metallic glass

TitleCooling rate dependence of structural order in Ni62Nb38 metallic glass
Authors
Issue Date2018
Citation
Journal of Applied Physics, 2018, v. 123, n. 4, article no. 045108 How to Cite?
AbstractMolecular dynamics (MD) simulations are performed to study the structure of Ni62Nb38 bulk metallic glass at the atomistic level. Structural analysis based on the cluster alignment method is carried out and a new Ni-centered distorted-icosahedra (DISICO) motif is excavated. We show that the short-range order and medium-range order in the glass are enhanced with lower cooling rate. Almost 50% of the clusters around the Ni atoms in the well-annealed Ni62Nb38 glass sample from our MD simulations can be classified as DISICO. It is revealed that the structural distortion with respect to the perfect icosahedra is driven by chemical ordering in the distorted region of the DISICO motif. The relationship between the structure, energy, and dynamics in this glass-forming alloy during the cooling and annealing processes is also established.
Persistent Identifierhttp://hdl.handle.net/10722/318701
ISSN
2023 Impact Factor: 2.7
2023 SCImago Journal Rankings: 0.649
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWen, Tongqi-
dc.contributor.authorSun, Yang-
dc.contributor.authorYe, Beilin-
dc.contributor.authorTang, Ling-
dc.contributor.authorYang, Zejin-
dc.contributor.authorHo, Kai Ming-
dc.contributor.authorWang, Cai Zhuang-
dc.contributor.authorWang, Nan-
dc.date.accessioned2022-10-11T12:24:21Z-
dc.date.available2022-10-11T12:24:21Z-
dc.date.issued2018-
dc.identifier.citationJournal of Applied Physics, 2018, v. 123, n. 4, article no. 045108-
dc.identifier.issn0021-8979-
dc.identifier.urihttp://hdl.handle.net/10722/318701-
dc.description.abstractMolecular dynamics (MD) simulations are performed to study the structure of Ni62Nb38 bulk metallic glass at the atomistic level. Structural analysis based on the cluster alignment method is carried out and a new Ni-centered distorted-icosahedra (DISICO) motif is excavated. We show that the short-range order and medium-range order in the glass are enhanced with lower cooling rate. Almost 50% of the clusters around the Ni atoms in the well-annealed Ni62Nb38 glass sample from our MD simulations can be classified as DISICO. It is revealed that the structural distortion with respect to the perfect icosahedra is driven by chemical ordering in the distorted region of the DISICO motif. The relationship between the structure, energy, and dynamics in this glass-forming alloy during the cooling and annealing processes is also established.-
dc.languageeng-
dc.relation.ispartofJournal of Applied Physics-
dc.titleCooling rate dependence of structural order in Ni62Nb38 metallic glass-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1063/1.5019681-
dc.identifier.scopuseid_2-s2.0-85041453811-
dc.identifier.volume123-
dc.identifier.issue4-
dc.identifier.spagearticle no. 045108-
dc.identifier.epagearticle no. 045108-
dc.identifier.eissn1089-7550-
dc.identifier.isiWOS:000423875800048-

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