Cyclic saturation dislocation pattern observation in the vicinity of grain boundaries by electron channeling contrast technique

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	Cyclic saturation dislocation pattern observation in the vicinity of grain boundaries by electron channeling contrast technique; Cyclic saturation dislocation pattern observation in the vicinity of grain boundaries by electron channeling contrast technique
	Z. F. Zhang; X. W. Li; H. H. Su; Z. G. Wang
	1998 ; 1998
发表期刊	Journal of Materials Science & Technology ; Journal of Materials Science & Technology
ISSN	1005-0302 ; 1005-0302
卷号	14 期号:3 页码:211-214
摘要	The cyclic saturation dislocation patterns within grains and in the vicinity of low-angle grain boundaries in fatigued copper crystal were successfully observed by electron channeling contrast technique in SEM. The results show that the dislocation patterns within grains consisted of typical two-phase structure, i.e. persistent slip bands (PSB) and veins. With increasing plastic strain amplitude (gamma(pl) greater than or equal to 1.7 x 10(-3)), large amount of PSBs and regular dislocation walls were observed. The dislocation walls and PSBs could cross through the low-angle grain boundaries continuously except that the dislocation-free zone (DFZs) appeared at some local regions. Combining with the cyclic stress-strain response and dislocation patterns, the effect of low-angle grain boundaries on cyclic deformation behavior was discussed.; The cyclic saturation dislocation patterns within grains and in the vicinity of low-angle grain boundaries in fatigued copper crystal were successfully observed by electron channeling contrast technique in SEM. The results show that the dislocation patterns within grains consisted of typical two-phase structure, i.e. persistent slip bands (PSB) and veins. With increasing plastic strain amplitude (gamma(pl) greater than or equal to 1.7 x 10(-3)), large amount of PSBs and regular dislocation walls were observed. The dislocation walls and PSBs could cross through the low-angle grain boundaries continuously except that the dislocation-free zone (DFZs) appeared at some local regions. Combining with the cyclic stress-strain response and dislocation patterns, the effect of low-angle grain boundaries on cyclic deformation behavior was discussed.
部门归属	acad sinica, inst met res, state key lab fatigue & fracture mat, shenyang 110015, peoples r china.;zhang, zf (reprint author), acad sinica, inst met res, state key lab fatigue & fracture mat, shenyang 110015, peoples r china ; acad sinica, inst met res, state key lab fatigue & fracture mat, shenyang 110015, peoples r china.;zhang, zf (reprint author), acad sinica, inst met res, state key lab fatigue & fracture mat, shenyang 110015, peoples r china
关键词	Fatigued Copper Polycrystals Fatigued Copper Polycrystals Stress-strain Curves Stress-strain Curves Deformation-behavior Deformation-behavior Free Zones Free Zones Crystals Crystals Metals Metals
URL	查看原文 ; 查看原文
WOS记录号	WOS:000073856000004 ; WOS:000073856000004
引用统计	被引频次：5[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/321006/37886
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. F. Zhang,X. W. Li,H. H. Su,et al. Cyclic saturation dislocation pattern observation in the vicinity of grain boundaries by electron channeling contrast technique, Cyclic saturation dislocation pattern observation in the vicinity of grain boundaries by electron channeling contrast technique[J]. Journal of Materials Science & Technology, Journal of Materials Science & Technology,1998, 1998,14, 14(3):211-214, 211-214.
APA	Z. F. Zhang,X. W. Li,H. H. Su,&Z. G. Wang.(1998).Cyclic saturation dislocation pattern observation in the vicinity of grain boundaries by electron channeling contrast technique.Journal of Materials Science & Technology,14(3),211-214.
MLA	Z. F. Zhang,et al."Cyclic saturation dislocation pattern observation in the vicinity of grain boundaries by electron channeling contrast technique".Journal of Materials Science & Technology 14.3(1998):211-214.