Influence of high temperature heat treatment on microstructure and microhardness of (DS)NiAl-Cr(Mo)-Hf eutectic alloy

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	Influence of high temperature heat treatment on microstructure and microhardness of (DS)NiAl-Cr(Mo)-Hf eutectic alloy
	Xu, CM ; Guo, JT ; Fu, HZ
通讯作者	Guo, JT()
	2004
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	40 期号:1 页码:57-61
摘要	The influence of high temperature heat treatment on microstructure and microhardness of (DS)NiAl-Cr(Mo)-Hf eutectic alloy fabricated with directional solidification under high temperature gradient was investigated. The results indicate that there is little change in the morphology of NiAl and Cr(Mo) phases after high temperature heat treatment. But the semicontinuous Heusler phase which is originally located on the grain boundaries is partially reduced and fine Heusler particles re-precipitated within NiAl matrix. Furthermore, NiAl precipitates coarsen in the Cr(Mo) phase and dislocation appears in the Cr(Mo) phase. Microhardness of as-fabricated (DS)NiAl-28Cr-5Mo-1Hf alloy is much higher than that of (DS)NiAl-28Cr-6Mo and basically unchanged after heat treatment.
关键词	NiAl directionally solidification high temperature heat treatment microstructure microhardness
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000189379800011
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：7[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/321006/81754
专题	中国科学院金属研究所
通讯作者	Guo, JT
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
推荐引用方式 GB/T 7714	Xu, CM,Guo, JT,Fu, HZ. Influence of high temperature heat treatment on microstructure and microhardness of (DS)NiAl-Cr(Mo)-Hf eutectic alloy[J]. ACTA METALLURGICA SINICA,2004,40(1):57-61.
APA	Xu, CM,Guo, JT,&Fu, HZ.(2004).Influence of high temperature heat treatment on microstructure and microhardness of (DS)NiAl-Cr(Mo)-Hf eutectic alloy.ACTA METALLURGICA SINICA,40(1),57-61.
MLA	Xu, CM,et al."Influence of high temperature heat treatment on microstructure and microhardness of (DS)NiAl-Cr(Mo)-Hf eutectic alloy".ACTA METALLURGICA SINICA 40.1(2004):57-61.