Strain softening constitutive equation for tungsten heavy alloy under tensile impact

doi:10.1016/j.matlet.2004.03.048

	Strain softening constitutive equation for tungsten heavy alloy under tensile impact
	Zhou, YX ; Wang, Y ; Mallick, PK ; Xia, YM
刊名	MATERIALS LETTERS
	2004-09-01
卷号	58 页码:2725-2729
关键词	tungsten heavy alloy strain rate constitutive equation
ISSN号	0167-577X
DOI	10.1016/j.matlet.2004.03.048
英文摘要	In this paper, tensile impact tests were performed on a tungsten heavy alloy at strain rates ranging from 100 to 1300 s(-1). Strain softening behavior was observed at the strain rates considered. Relationships between tensile strength, failure strain and strain rate were determined using power-law functions. The fracture surfaces exhibited four characteristic features: tungsten-tungsten boundary separation, tungsten-matrix interface separation, tungsten cleavage and matrix rupture. A three-parameter nonlinear constitutive model was established to describe the strain rate dependent behavior of the tungsten heavy alloy. The parameters in this model are the modulus E, the strain exponent m and the compliance factor beta. All three parameters were found to be strain rate dependent. (C) 2004 Published by Elsevier B.V.
WOS关键词	POLYCRYSTALLINE TUNGSTEN ; BEHAVIOR ; TEMPERATURE ; FAILURE
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000223164200005
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/39619]
专题	中国科学院近代物理研究所
通讯作者	Zhou, YX
作者单位	1.Univ Michigan, Ctr Lightweighting Automot Mat & Proc, Dearborn, MI 48128 USA 2.Univ Sci & Technol China, Dept Modern Phys, CAS, Key Lab Mech Behav & Design Mat, Hefei 230026, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Zhou, YX,Wang, Y,Mallick, PK,et al. Strain softening constitutive equation for tungsten heavy alloy under tensile impact[J]. MATERIALS LETTERS,2004,58:2725-2729.
APA	Zhou, YX,Wang, Y,Mallick, PK,&Xia, YM.(2004).Strain softening constitutive equation for tungsten heavy alloy under tensile impact.MATERIALS LETTERS,58,2725-2729.
MLA	Zhou, YX,et al."Strain softening constitutive equation for tungsten heavy alloy under tensile impact".MATERIALS LETTERS 58(2004):2725-2729.