Grain boundary effects on the fatigue deformation and cracking behavior of copper bicrystals

CORC > 金属研究所 > 中国科学院金属研究所

	Grain boundary effects on the fatigue deformation and cracking behavior of copper bicrystals
	Hu, YM; Wang, ZG
刊名	INTERNATIONAL JOURNAL OF FATIGUE
	1998-07-01
卷号	20 期号:6 页码:463-469
关键词	grain boundary fatigue deformation cracking copper bicrystals
ISSN号	0142-1123
通讯作者	Hu, YM()
英文摘要	Fatigue tests were performed on two types of [(1) over bar 34] iso-axial copper bicrystals for studying the grain boundary (GB) effects on the cyclic deformation and fatigue cracking behavior and the corresponding mechanism in copper bicrystals. One bicrystal contains a perpendicular GB and the other contains a tilting one with respect to the loading axis. Both the grain boundaries are nearly 180 degrees rotated. It was shown that both the perpendicular and tilting grain boundaries have little effect on the cyclic hardening and saturation behavior of the bicrystals, but show strong effects on the slip deformation and fatigue cracking behavior. The microcracks were found to prefer to nucleate and propagate at the GB, leading to intergranular cracking. However, the crack nucleation behavior was found to be different for the above two iso-axial copper bicrystals. Two types of intergranular fatigue cracking mechanisms were proposed based on the specimen geometry with respect to the dominant slip system and the GB orientation. (C) 1998 Elsevier Science Ltd.
WOS研究方向	Engineering ; Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000074823900005
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/108274]
专题	金属研究所_中国科学院金属研究所
通讯作者	Hu, YM
作者单位	Acad Sinica, Inst Met Phys, State Key Lab Fatigue & Fracture Mat, Shenyang 110015, Peoples R China
推荐引用方式 GB/T 7714	Hu, YM,Wang, ZG. Grain boundary effects on the fatigue deformation and cracking behavior of copper bicrystals[J]. INTERNATIONAL JOURNAL OF FATIGUE,1998,20(6):463-469.
APA	Hu, YM,&Wang, ZG.(1998).Grain boundary effects on the fatigue deformation and cracking behavior of copper bicrystals.INTERNATIONAL JOURNAL OF FATIGUE,20(6),463-469.
MLA	Hu, YM,et al."Grain boundary effects on the fatigue deformation and cracking behavior of copper bicrystals".INTERNATIONAL JOURNAL OF FATIGUE 20.6(1998):463-469.