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Strain softening constitutive equation for tungsten heavy alloy under tensile impact

文献类型：期刊论文

作者Zhou, YX; Wang, Y; Mallick, PK; Xia, YM
刊名MATERIALS LETTERS
出版日期2004-09-01
卷号58页码:2725-2729
关键词tungsten heavy alloy strain rate constitutive equation
ISSN号0167-577X
DOI10.1016/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
WOS记录号WOS:000223164200005
出版者ELSEVIER SCIENCE BV
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.

入库方式： OAI收割

来源：近代物理研究所

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