Effect of structural heterogeneity on serrated flow behavior of Zr-based metallic glass

doi:10.1016/j.jallcom.2018.07.026

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	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
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2018-10-25
卷号	766 页码:908-917
关键词	Serrated flow behavior Structural heterogeneity Mechanical property Plastic deformation
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2018.07.026
英文摘要	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.
分类号	一类
URL标识	查看原文
WOS关键词	PLASTIC-FLOW ; ION IRRADIATION ; COOLING RATE ; SHEAR BANDS ; VOLUME ; REJUVENATION ; DEFORMATION ; PROPAGATION ; RELAXATION ; DYNAMICS
WOS研究方向	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000444617200108
资助机构	National Basic Research Program of China [2013CB632203] ; Natural Science Foundation of China [51601118, 51675347] ; Australian Research Council [DP130103592]
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/77861]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.[Liu, L. H. 2.Huang, X. S. 3.Li, P. J.] Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China 4.[Liu, Z. Y. 5.Wu, X. Y. 6.Lou, Y.] Shenzhen Univ, Coll Mechatron & Control Engn, Guangdong Prov Key Lab Micro Nano Optomechatron E, Shenzhen 518060, Peoples R China 7.[Huan, Y.] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 8.[He, L. J.] Tsinghua Univ, Dept Aerosp Engn, Beijing 100084, Peoples R China 9.[Zhang, L. C.] Edith Cowan Univ, Sch Engn, 270 Joondalup Dr, Perth, WA 6027, Australia
推荐引用方式 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.