TEM observations of twin intersections in a Ti-47Al-2Cr-2Nb-0.1Y alloy compressed at room temperature

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	TEM observations of twin intersections in a Ti-47Al-2Cr-2Nb-0.1Y alloy compressed at room temperature
	C. L. Chen; W. Lu; Y. Y. Cui; L. L. He; H. Q. Ye
	2008
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	454 期号:1-2 页码:201-205
摘要	Twin intersections in TiAl alloy compressed at room temperature were investigated by high-resolution electron microscopy (HREM). One incident twin (TI) was observ -d to divide into three thin twin bands and leave several superlattice intrinsic stacking faults (SISFs) in the barrier twin (TB). It was a process related. to the dislocation dissociation: (1/2)[112] -> (1/6)[112] + SISF + (1/6)[112] + SESF + (1/6)[112]. The nucleation of type-I twin intersection was also observed. The incident twin was found to be a bundle of SISFs, instead of a perfect twin lath. In addition, a triangular striated structure around type-I twin intersection was examined by HREM. The formation mechanism of this triangular striated structure and the related dislocation reactions were discussed. (c) 2007 Elsevier B.V. All rights reserved.
部门归属	[chen, c. l.; lu, w.; cui, y. y.; he, l. l.; ye, h. q.] chinese acad sci, inst met res, sheyang natl lab mat sci, shenyang 110016, peoples r china. [chen, c. l.; lu, w.] chinese acad sci, grad sch, beijing 100039, peoples r china.;he, ll (reprint author), chinese acad sci, inst met res, sheyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;llhe@imr.ac.cn
关键词	Intermetallics Atomic Scale Structure Transmission Electron Microscopy Deformation Twins Mechanical-properties Propagation Microstructure
URL	查看原文
WOS记录号	WOS:000255215000038
引用统计	被引频次：4[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/321006/32661
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	C. L. Chen,W. Lu,Y. Y. Cui,et al. TEM observations of twin intersections in a Ti-47Al-2Cr-2Nb-0.1Y alloy compressed at room temperature[J]. Journal of Alloys and Compounds,2008,454(1-2):201-205.
APA	C. L. Chen,W. Lu,Y. Y. Cui,L. L. He,&H. Q. Ye.(2008).TEM observations of twin intersections in a Ti-47Al-2Cr-2Nb-0.1Y alloy compressed at room temperature.Journal of Alloys and Compounds,454(1-2),201-205.
MLA	C. L. Chen,et al."TEM observations of twin intersections in a Ti-47Al-2Cr-2Nb-0.1Y alloy compressed at room temperature".Journal of Alloys and Compounds 454.1-2(2008):201-205.