Tensile Deformation Behaviors of Cu-Ni Alloy Processed by Equal Channel Angular Pressing

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	Tensile Deformation Behaviors of Cu-Ni Alloy Processed by Equal Channel Angular Pressing
	J. W. Wang; P. Zhang; Q. Q. Duan; G. Yang; S. D. Wu; Z. F. Zhang
	2010
发表期刊	Advanced Engineering Materials
ISSN	1438-1656
卷号	12 期号:4 页码:304-311
摘要	The microstructure of the Cu-Ni alloy specimen ER is mainly elongated coarse grains. However, the microstructure of the specimen EH is inhomogeneous and some recrystallized sub-grains form. In addition, the misorientation angles of the specimens ER and EH are mainly smaller than 15 degrees, showing a feature of low-angle grain boundaries. Although the uniform elongation of the ECAPed Cu-Ni alloy decreases rapidly, the yield strength of the Cu-Ni alloy is improved more than three times after ECAP for one pass. The mechanical properties, deformation, and fracture of Cu-Ni alloy are not significantly affected by the strain rates. With the increase in strain rates, the yield strength of the specimen E0 hardly changes but the ultimate tensile strength increases slightly. However, with the increase in strain rates, the tensile strength of the specimen EH gradually improved. Besides, the fracture fractographies of the specimens EH turn into shear dimples at high strain rate. In addition, both the strain-hardening exponent n and strain-rate sensitivity m of the specimens EH are small, inducing lower strain-hardening, uniform plastic deformation and resistance to the shear deformation.
部门归属	[wang, jiangwei; zhang, peng; duan, qiqiang; wu, shiding; zhang, zhefeng] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [yang, gang] cent iron & steel res inst, beijing 100081, peoples r china.;wang, jw (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;zhfzhang@imr.ac.cn
关键词	Ultrafine-grained Cu Strain-rate Al Alloys Ductility Fracture Temperature Refinement Mechanism Strength Copper
URL	查看原文
WOS记录号	WOS:000277655500009
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31500
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. W. Wang,P. Zhang,Q. Q. Duan,et al. Tensile Deformation Behaviors of Cu-Ni Alloy Processed by Equal Channel Angular Pressing[J]. Advanced Engineering Materials,2010,12(4):304-311.
APA	J. W. Wang,P. Zhang,Q. Q. Duan,G. Yang,S. D. Wu,&Z. F. Zhang.(2010).Tensile Deformation Behaviors of Cu-Ni Alloy Processed by Equal Channel Angular Pressing.Advanced Engineering Materials,12(4),304-311.
MLA	J. W. Wang,et al."Tensile Deformation Behaviors of Cu-Ni Alloy Processed by Equal Channel Angular Pressing".Advanced Engineering Materials 12.4(2010):304-311.