Cavitation instabilities in bulk metallic glasses

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	Cavitation instabilities in bulk metallic glasses
	Huang X(黄鑫); Ling Z(凌中); Dai LH(戴兰宏)
刊名	INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
	2013-05-01
通讯作者邮箱	lhdai@lnm.imech.ac.cn
卷号	50 期号:9 页码:1364-1372
关键词	Void growth Metallic glasses Dynamic fracture Free volume
ISSN号	0020-7683
通讯作者	Dai, LH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
产权排序	[Huang, X.; Ling, Z.; Dai, L. H.] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
中文摘要	To reveal the mechanism of a void-dominated fracture process in bulk metallic glasses, a theoretical description of void growth undergoing remote hydrostatic tension is presented. Special attention is focused on cavitation instabilities and dynamics of a dynamic void growth process. The critical stress for cavitation instabilities is derived theoretically, which is validated by numerical simulations with a finite difference method. To characterize the dynamic void growth process, a dimensionless number is proposed, which embodies the competition of inertial effects, loading rate effects and viscous effects. It is found that inertial effects can induce vibration of the void growth rate at the rise stage of loading history and impede the growth at the steady stage. In addition, to study the void growth at the early stage of a void-dominated fracture process, quasistatic cases without inertial effects are examined. It is shown that the void growth rate strongly depends on the evolution of free volume concentration.
学科主题	固体力学
分类号	一类/力学重要期刊
收录类别	SCI ; EI
资助信息	National Key Basic Research Program of China [2012CB937500]; NSFC [11272328, 11132011, 11021262, 11002144, 10872206]; National Natural Science Foundation of China-NSAF [10976100]
原文出处	http://dx.doi.org/10.1016/j.ijsolstr.2013.01.011
语种	英语
WOS记录号	WOS:000326858200015
公开日期	2013-12-16
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/47581]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Huang X,Ling Z,Dai LH. Cavitation instabilities in bulk metallic glasses[J]. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,2013,50(9):1364-1372.
APA	黄鑫,凌中,&戴兰宏.(2013).Cavitation instabilities in bulk metallic glasses.INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,50(9),1364-1372.
MLA	黄鑫,et al."Cavitation instabilities in bulk metallic glasses".INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES 50.9(2013):1364-1372.