High resolution electron microscopy studies of martensite around Xs precipitates in a Cu-Al-Ni-Mn-Ti shape memory alloy

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	High resolution electron microscopy studies of martensite around Xs precipitates in a Cu-Al-Ni-Mn-Ti shape memory alloy
	H. Y. Peng; Y. D. Yu; D. X. Li
	1997
发表期刊	Acta Materialia
ISSN	1359-6454
卷号	45 期号:12 页码:5153-5161
摘要	Microstructures of beta l' martensite around Xs precipitate in a Cu-Al-Ni-Mn-Ti shape memory alloy have been studied by high resolution electron microscopy. Both formation of self-accommodation martensite variants and change in 18R stacking sequence to 2H sequence were often observed to occur simultaneously around Xs in samples water-quenched from 1223K. A new orientation relationship between 2H and 18R martensite has been found: (12 (8) over bar)(18R)//(12 (1) over bar)(2H) and [231](18R)//[2 (1) over bar 0](2H). Analysis of composition of martensite around and away from the Xs precipitate shows that enrichment of Al in the matrix close to Xs account for the change in the martensite stacking sequence. Meanwhile, Xs was found to have different composition with X-L precipitate and could be termed as (Cu, Ti)(2)NiAl. (C) 1997 Acta Metallurgica Inc.
部门归属	peng, hy (reprint author), chinese acad sci,inst met res,atom imaging solids lab,shenyang 110015,peoples r china
关键词	Grain-refinement Stacking-sequence 18r Martensite Plates Phase
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WOS记录号	WOS:A1997YJ67000028
引用统计	被引频次：16[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/321006/38059
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Y. Peng,Y. D. Yu,D. X. Li. High resolution electron microscopy studies of martensite around Xs precipitates in a Cu-Al-Ni-Mn-Ti shape memory alloy[J]. Acta Materialia,1997,45(12):5153-5161.
APA	H. Y. Peng,Y. D. Yu,&D. X. Li.(1997).High resolution electron microscopy studies of martensite around Xs precipitates in a Cu-Al-Ni-Mn-Ti shape memory alloy.Acta Materialia,45(12),5153-5161.
MLA	H. Y. Peng,et al."High resolution electron microscopy studies of martensite around Xs precipitates in a Cu-Al-Ni-Mn-Ti shape memory alloy".Acta Materialia 45.12(1997):5153-5161.