Electron irradiation-induced evolution of the martensitic transformation characteristics in a CuZnAl shape memory alloy

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	Electron irradiation-induced evolution of the martensitic transformation characteristics in a CuZnAl shape memory alloy
	Z. G. Wang; X. T. Zu; J. H. Wu; L. J. Liu; H. Q. Mo; Y. Huo
	2004
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	364 期号:1-2 页码:171-175
摘要	CuZnAl shape memory alloy samples were irradiated by 1.7 MeV electrons under the parent and martensite phase, respectively. The transformation temperatures were measured by differential scanning calorimetry (DSC). The effect of electron irradiation on the ordering degree was studied by X-ray diffraction (XRD) by estimating the spacing difference (Deltad) of some selected pairs of diffraction planes. The damage accumulation was determined by positron annihilation technology (PAT). The results showed that irradiation under the parent phase produced no change in the transformation temperatures. The reverse martensite transformation temperatures (A(s) and A(f)) shift to higher temperature of samples and increase with increasing electron doses when irradiation was performed under the martensite phase. The XRD results showed irradiation under the parent phase produces little change in Delta(d), but Delta(d) decreased for the CuZnAl samples irradiated under the martensite phase, this implied that the ordering degree of the martensite decreased after the irradiation under the martensite phase. The PAT results showed that the concentration of vacancy clusters increased after irradiation. It is thought that the martensite stabilization is related to the decreasing of ordering degree in the martensite state. (C) 2003 Elsevier B.V. All rights reserved.
部门归属	univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. sichuan univ, dept met mat, chengdu 610064, peoples r china. tech univ berlin, d-10623 berlin, germany.;zu, xt (reprint author), univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china;xiaotaozu@yahoo.com
关键词	Intermetallics Point Defects Positron Spectroscopies X-ray Diffraction Electron Irradiation Ordering Degree Martensitic Stabilization Zn-al Alloys Cu-zn Neutron-irradiation Proton-irradiation Stabilization
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WOS记录号	WOS:000187951500029
引用统计	被引频次：8[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/321006/35601
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. G. Wang,X. T. Zu,J. H. Wu,et al. Electron irradiation-induced evolution of the martensitic transformation characteristics in a CuZnAl shape memory alloy[J]. Journal of Alloys and Compounds,2004,364(1-2):171-175.
APA	Z. G. Wang,X. T. Zu,J. H. Wu,L. J. Liu,H. Q. Mo,&Y. Huo.(2004).Electron irradiation-induced evolution of the martensitic transformation characteristics in a CuZnAl shape memory alloy.Journal of Alloys and Compounds,364(1-2),171-175.
MLA	Z. G. Wang,et al."Electron irradiation-induced evolution of the martensitic transformation characteristics in a CuZnAl shape memory alloy".Journal of Alloys and Compounds 364.1-2(2004):171-175.