Effect of heat treatment on the microstructure of multiphase NiAl-based alloy

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	Effect of heat treatment on the microstructure of multiphase NiAl-based alloy
	Y. Xie; L. Z. Zhou; J. T. Guo; H. Q. Ye
	2008
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	24 期号:2 页码:245-250
摘要	The alloy Ni-Al26.6-Cr13.4-Co8.1-Ti4.3-W1.3-Mo0.9 (at. pct) was fabricated from superalloy K44 and Al element using vacuum induction and casting technique. Investigations to this alloy reveal that a new phase Cr3Ni2 possessing low melting point and poor ductility is formed, which is distributed as a network along NiAl matrix grain boundaries. Subsequent different solution and aging treatments are carried out and lead to microstructural changes to various extents. Rapid cooling after solution at 1250 degrees C for 20 h gives rise to macrocracks in the specimen while slow cooling after the same treatment results in the formation of spheric alpha-Cr solid solution and needle-like Ni3Al phase, which are embedded in NiAl matrix. It is comfirmed that aging treatments initiate lath-shaped Ni3Al phase and pearl-shaped alpha-Cr phase to precipitate from the NiAl matrix, which own orientation relationships with these precipitates.
部门归属	[xie, yi; zhou, lanzhang; guo, jianting] chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china. [xie, yi; ye, hengqiang] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;guo, jt (reprint author), chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china;jtguo@imr.ac.cn
关键词	Nial Intermetallics Microstructure Solution And Aging Treatments Mechanical-properties Deformation-behavior Cr Intermetallics Precipitation Stability Systems Cast Mo
URL	查看原文
WOS记录号	WOS:000254637200022
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/321006/33237
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Xie,L. Z. Zhou,J. T. Guo,et al. Effect of heat treatment on the microstructure of multiphase NiAl-based alloy[J]. Journal of Materials Science & Technology,2008,24(2):245-250.
APA	Y. Xie,L. Z. Zhou,J. T. Guo,&H. Q. Ye.(2008).Effect of heat treatment on the microstructure of multiphase NiAl-based alloy.Journal of Materials Science & Technology,24(2),245-250.
MLA	Y. Xie,et al."Effect of heat treatment on the microstructure of multiphase NiAl-based alloy".Journal of Materials Science & Technology 24.2(2008):245-250.