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Effect of structural heterogeneity on serrated flow behavior of Zr-based metallic glass
Liu LH.; Liu ZY.; Huan Y(郇勇); Wu XY; Lou Y; Huang XS; He LJ; Li PJ; Zhang LC.
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
2018-10-25
Volume766Pages:908-917
ISSN0925-8388
Abstract

Physical correlation between structural heterogeneity and plastic flow of metallic glasses (MGs) is crucial for the understanding of MGs' deformation mechanism. In this work, different degrees of structural heterogeneity are introduced into Zr-based MGs through different cooling rates casting. The effect of structural heterogeneity on serrated flow behavior was studied. The findings demonstrate that there exists a tendency that serration flow dynamics of the MGs transforms from a chaotic state to a self-organized critical state with increased inhomogeneity. The established correlation between structural heterogeneity and serrated flow behavior shows that the higher degree of structural heterogeneity facilitates a higher frequency of interaction and multiplication of shear bands by increasing nucleation sites, and then promotes serrated flow behavior to be more homogeneous in time and space, thereby induces transformation of dynamics behavior and improves the plasticity. The obtained results shed light on deformation mechanism of plastic flow and provide a new insight into the plasticity of MGs. (C) 2018 Elsevier B.V. All rights reserved.

KeywordSerrated flow behavior Structural heterogeneity Mechanical property Plastic deformation
DOI10.1016/j.jallcom.2018.07.026
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000444617200108
WOS KeywordPLASTIC-FLOW ; ION IRRADIATION ; COOLING RATE ; SHEAR BANDS ; VOLUME ; REJUVENATION ; DEFORMATION ; PROPAGATION ; RELAXATION ; DYNAMICS
WOS Research AreaChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Basic Research Program of China [2013CB632203] ; Natural Science Foundation of China [51601118, 51675347] ; Australian Research Council [DP130103592]
Classification一类
Ranking3
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77861
Collection非线性力学国家重点实验室
Recommended Citation
GB/T 7714
Liu LH.,Liu ZY.,Huan Y,et al. Effect of structural heterogeneity on serrated flow behavior of Zr-based metallic glass[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2018,766:908-917.
APA Liu LH..,Liu ZY..,Huan Y.,Wu XY.,Lou Y.,...&Zhang LC..(2018).Effect of structural heterogeneity on serrated flow behavior of Zr-based metallic glass.JOURNAL OF ALLOYS AND COMPOUNDS,766,908-917.
MLA Liu LH.,et al."Effect of structural heterogeneity on serrated flow behavior of Zr-based metallic glass".JOURNAL OF ALLOYS AND COMPOUNDS 766(2018):908-917.
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