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Shear band dilatation in amorphous alloys
Jiang MQ(蒋敏强); Wilde G; Dai LH(戴兰宏); Jiang, MQ
Source PublicationSCRIPTA MATERIALIA
2017-01-15
Volume127Pages:54-57
ISSN1359-6462
Abstract

Based on the physical picture of free-volume creation and diffusion via shear transformations (STs), we develop a model for predicting the shear band dilatation in amorphous alloys. The model reveals that the dilatation in shear bands with fixed thickness increases with decreasing activation volume of STs that determines the diffusion distance of free-volume. Mature (or thicker) shear bands possess higher dilatation than recently evolved, thinner shear bands. The predicted dilatations agree well with the values of measurements and simulations, clarifying the long-standing controversy. The underlying physics is attributed to the local topological instability via STs that leads to shear banding. (C) 2016 Acta Materialia Inc Published by Elsevier Ltd. All rights reserved.

KeywordAmorphous Alloys Shear Band Dilatation Free Volume Shear Transformations
DOI10.1016/j.scriptamat.2016.08.038
Indexed BySCI ; EI
Language英语
WOS IDWOS:000386407100013
WOS KeywordMETALLIC SUPERCOOLED LIQUIDS ; GLASSES ; DEFORMATION ; DIFFUSION ; STATE ; THICKNESS ; DYNAMICS ; SOLIDS ; ORIGIN ; FLOW
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Nature Science Foundation of China(11522221 ; Deutsche Forschungsgemeinschaft ; 11372315 ; 11472287)
DepartmentLNM冲击动力学与新型材料力学性能
Classification一类
Ranking1
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60924
Collection非线性力学国家重点实验室
Corresponding AuthorJiang, MQ
Recommended Citation
GB/T 7714
Jiang MQ,Wilde G,Dai LH,et al. Shear band dilatation in amorphous alloys[J]. SCRIPTA MATERIALIA,2017,127:54-57.
APA Jiang MQ,Wilde G,Dai LH,&Jiang, MQ.(2017).Shear band dilatation in amorphous alloys.SCRIPTA MATERIALIA,127,54-57.
MLA Jiang MQ,et al."Shear band dilatation in amorphous alloys".SCRIPTA MATERIALIA 127(2017):54-57.
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