Precipitation behavior of Heusler phase (Ni2AlHf) in multiphase NiAl alloy

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	Precipitation behavior of Heusler phase (Ni2AlHf) in multiphase NiAl alloy
	C. Y. Cui; J. T. Guo; H. Q. Ye
	2006
发表期刊	Journal of Materials Science
ISSN	0022-2461
卷号	41 期号:10 页码:2981-2987
摘要	Precipitation behavior of Heusler phase (Ni2AlHf) in a directionally solidified (DS) NiAl- 28Cr-5Mo-1Hf (at.%) alloy was examined using scanning electron microscope (SEM) and transmission electron microscope (TEM). In the as-cast alloy, the Ni2AlHf phase generally appeared on the NiAl/Cr(Mo) interface, which degraded the NiAl/Cr(Mo) eutectic structure. In the heat-treated alloy, the density of the intercellular Ni2AlHf phase was slightly reduced. In addition, the spherical Ni2AlHf phase precipitated heterogeneously in the NiAl matrix, but the Ni2AlHf phase did not precipitate in the lamellar Cr(Mo) phase. The precipitation behavior of the Ni2AlHf phase could be explained in terms of the interfacial energy. A lattice model was also proposed to explain the NiAl <-> Ni2AlHf phase transformation.
部门归属	chinese acad sci, inst met res, shenyang 110016, peoples r china.;cui, cy (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;cui.chuanyong@nims.go.jp
关键词	Nial/cr(Mo Hf) Composite Mechanical-properties Beta' Precipitation Microstructure Hf Deformation Stability Property Cr
URL	查看原文
WOS记录号	WOS:000237856400028
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/321006/34163
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	C. Y. Cui,J. T. Guo,H. Q. Ye. Precipitation behavior of Heusler phase (Ni2AlHf) in multiphase NiAl alloy[J]. Journal of Materials Science,2006,41(10):2981-2987.
APA	C. Y. Cui,J. T. Guo,&H. Q. Ye.(2006).Precipitation behavior of Heusler phase (Ni2AlHf) in multiphase NiAl alloy.Journal of Materials Science,41(10),2981-2987.
MLA	C. Y. Cui,et al."Precipitation behavior of Heusler phase (Ni2AlHf) in multiphase NiAl alloy".Journal of Materials Science 41.10(2006):2981-2987.