Cyclic deformation and fatigue cracking behaviour of polycrystalline Cu, Cu-10 wt% Zn and Cu-32 wt% Zn

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	Cyclic deformation and fatigue cracking behaviour of polycrystalline Cu, Cu-10 wt% Zn and Cu-32 wt% Zn
	P. Zhang; Q. Q. Duan; S. X. Li; Z. F. Zhang
	2008
发表期刊	Philosophical Magazine
ISSN	1478-6435
卷号	88 期号:16 页码:2487-2503
摘要	The cyclic deformation behaviour of polycrystalline Cu, Cu-10 wt% Zn and Cu-32 wt% Zn was systematically investigated in the plastic strain amplitude range of 1 x 10(-4)-4 x 10(-3). The differences in the cyclic stress-strain (CSS) responses and fatigue cracking behaviour between Cu, Cu-10 wt% Zn and Cu-32 wt% Zn were compared. It was found that the occurrence of a cyclic saturation for Cu-10 wt% Zn and Cu-32 wt% Zn strongly depends on the applied strain amplitude, whereas polycrystalline Cu always displays cyclic saturation. Surface deformation morphologies were analyzed by scanning electron microscopy (SEM). One of the major features observed is that the slip bands become increasingly homogenous with Zn addition. The fatigue cracks were found to frequently nucleate along the annealing twin boundaries (TBs) in Cu-10 wt% Zn and Cu-32 wt% Zn, but not in polycrystalline Cu. Based on these experimental results, the cyclic deformation response and fatigue cracking behaviour are discussed, and a developed TB cracking mechanism is proposed to explain the difference in fatigue cracking mechanisms in Cu, Cu-10 wt% Zn and Cu-32 wt% Zn.
部门归属	[zhang, p.; duan, q. q.; li, s. x.; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;zhang, zf (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;zhfzhang@imr.ac.cn
关键词	Polycrystalline Copper Cu-zn Alloys Cyclic Deformation Slip Bands Grain Boundary Twin Boundary Fatigue Cracking Stress-strain Response Copper Single-crystals Perpendicular Grain-boundary Annealing Twin Boundaries Persistent Slip Bands Cu-22-percent-zn Alloy Dislocation-structures Bicrystals Initiation Amplitude
URL	查看原文
WOS记录号	WOS:000259631800010
引用统计	被引频次：26[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/321006/33330
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	P. Zhang,Q. Q. Duan,S. X. Li,et al. Cyclic deformation and fatigue cracking behaviour of polycrystalline Cu, Cu-10 wt% Zn and Cu-32 wt% Zn[J]. Philosophical Magazine,2008,88(16):2487-2503.
APA	P. Zhang,Q. Q. Duan,S. X. Li,&Z. F. Zhang.(2008).Cyclic deformation and fatigue cracking behaviour of polycrystalline Cu, Cu-10 wt% Zn and Cu-32 wt% Zn.Philosophical Magazine,88(16),2487-2503.
MLA	P. Zhang,et al."Cyclic deformation and fatigue cracking behaviour of polycrystalline Cu, Cu-10 wt% Zn and Cu-32 wt% Zn".Philosophical Magazine 88.16(2008):2487-2503.