High-resolution transmission electron microscope (HRTEM) study of the transformation interface and substructure in NiTiHf40 melt-spun ribbons

IMR OpenIR

	High-resolution transmission electron microscope (HRTEM) study of the transformation interface and substructure in NiTiHf40 melt-spun ribbons
	M. Liu; X. M. Zhang; Y. Y. Li; J. Z. Chen; M. J. Tu
	2002
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	334 页码:147-153
摘要	The fine structures of self-accommodation spear-like martensite variant groups and the interface between the martensite region and the amorphous phase region in NiTi-Hf-40 melt-spun ribbons were studied by using high-resolution transmission electron microscopy (HRTEM). In the self-accommodation lath plate martensite group, the variants prefer to form orthogonal morphology of spear-like martensite on both sides of melt-spun ribbons. Some variant pairs were of the (011)(B19). Type I twin related with straight and coherent interface while the interface between other variants is curved and incoherent. The main substructure in variants of the group was not the (001)(B19). compound twin but the (011)(B19). Type I microtwin and (011) stacking faults. The interface between the amorphous phase and the martensite region showed high energy and nonequilibrium configuration. Some area in the interface is straight but not smooth and exhibited an irregular configuration and some area in the interface has an obvious zigzag configuration. Energy-dispersive spectroscopy (EDX) analysis of the composition in NiTi-Hf-40 ribbon showed that the Ni and Ti content were different in the martensite region and in the amorphous phase. The amorphous phase and the martensite coexisted in NiTi-Hf ribbons when the cooling rate was high enough. The higher hardness and brittleness of Hf-40 compared to those of lower Hf content NiTi-Hf alloys were due to the not retained austenite, the very small variant pair and the coexisting amorphous phase. (C) 2002 Elsevier Science BY All rights reserved.
部门归属	sichuan univ w, dept met mat, chengdu 610065, peoples r china. chinese acad sci, inst met res, natl key lab, shenyang 110015, peoples r china.;liu, m (reprint author), sichuan univ w, dept met mat, chengdu 610065, peoples r china
关键词	Transition Metal Alloys Amorphous Materials Tem Phase Transition Shape-memory Alloy Hf B19' Martensite
URL	查看原文
WOS记录号	WOS:000173810700023
引用统计	被引频次：6[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/321006/36350
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	M. Liu,X. M. Zhang,Y. Y. Li,et al. High-resolution transmission electron microscope (HRTEM) study of the transformation interface and substructure in NiTiHf40 melt-spun ribbons[J]. Journal of Alloys and Compounds,2002,334:147-153.
APA	M. Liu,X. M. Zhang,Y. Y. Li,J. Z. Chen,&M. J. Tu.(2002).High-resolution transmission electron microscope (HRTEM) study of the transformation interface and substructure in NiTiHf40 melt-spun ribbons.Journal of Alloys and Compounds,334,147-153.
MLA	M. Liu,et al."High-resolution transmission electron microscope (HRTEM) study of the transformation interface and substructure in NiTiHf40 melt-spun ribbons".Journal of Alloys and Compounds 334(2002):147-153.