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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
2018-10-01
Pages908-917
Conference Name24th International Symposium on Metastable, Amorphous and Nanostructured Materials (ISMANAM)
Conference DateJUN 18-23, 2017
Conference PlaceSan Sebastian, SPAIN
AbstractPhysical 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
WOS IDWOS:000444617200108
Funding OrganizationNational Basic Research Program of China [2013CB632203]; Natural Science Foundation of China [51601118, 51675347]; Australian Research Council [DP130103592]
Indexed ByCPCI-S
Language英语
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78555
Collection非线性力学国家重点实验室
Affiliation1.{Liu, L. H.、Huang, X. S.、Li, P. J.} Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China
2.{Liu, Z. Y.、Wu, X. Y.、Lou, Y.} Shenzhen Univ, Coll Mechatron & Control Engn, Guangdong Prov Key Lab Micro Nano Optomechatron E, Shenzhen 518060, Peoples R China
3.{Huan, Y.} Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
4.{He, L. J.} Tsinghua Univ, Dept Aerosp Engn, Beijing 100084, Peoples R China
5.{Zhang, L. C.} Edith Cowan Univ, Sch Engn, 270 Joondalup Dr, Perth, WA 6027, Australia
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[C],2018:908-917.
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