Effect of Heat Treatment on Microstructure and Microhardness of Directionally Solidified NiAl-Cr（Mo）-Hf Intermetallic Alloy

IMR OpenIR

	Effect of Heat Treatment on Microstructure and Microhardness of Directionally Solidified NiAl-Cr（Mo）-Hf Intermetallic Alloy
其他题名	Effect of Heat Treatment on Microstructure and Microhardness of Directionally Solidified NiAl-Cr(Mo)-Hf Intermetallic Alloy
	Xie Xishan 1; Xu Chunmei 1; Guo Jianting 2
	2004
发表期刊	材料热处理学报
ISSN	1009-6264
卷号	25.0 期号:005 页码:165-168
摘要	The effect of heat treatment on microstructure and microhardness of directionally solidified (DS)NiAl-Cr(Mo)-Hf alloy is investigated. The results indicate that there is little change in the morphology of NiA1 and Cr(Mo) phases after heat treatment. However, the semicontinuous Heusler phase which is originally located at grain boundaries is partially reduced and fine Heusler particles re-precipitate within NiA1 matrix. Furthermore, NiA1 precipitates coarsen in Cr(Mo) phase and dislocations appear in Cr(Mo) phase. Microhardness of as-grown (DS)NiAl-28Cr-5Mo-1Hf alloy is much higher than that of (DS)NiAl-28Cr-6Mo and basically has no change after heat treatment.
其他摘要	The effect of heat treatment on microstructure and microhardness of directionally solidified(DS)NiAl-Cr(Mo)-Hf alloy is investigated. The results indicate that there is little change in the morphology of NiAl and Cr(Mo) phases after heat treatment. However, the semicontinuous Heusler phase which is originally located at grain boundaries is partially reduced and fine Heusler particles re-precipitate within NiAl matrix. Furthermore, NiAl precipitates coarsen in Cr(Mo) phase and dislocations appear in Cr(Mo) phase. Microhardness of as-grown (DS)NiAl-28Cr-5Mo-1Hf alloy is much higher than that of (DS)NiAl-28Cr-6Mo and basically has no change after heat treatment.
关键词	热处理显微结构显微硬度 NiAl-Cr（Mo）-Hf合金
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:1846491
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/151571
专题	中国科学院金属研究所
作者单位	1.北京科技大学 2.中国科学院金属研究所
推荐引用方式 GB/T 7714	Xie Xishan,Xu Chunmei,Guo Jianting. Effect of Heat Treatment on Microstructure and Microhardness of Directionally Solidified NiAl-Cr（Mo）-Hf Intermetallic Alloy[J]. 材料热处理学报,2004,25.0(005):165-168.
APA	Xie Xishan,Xu Chunmei,&Guo Jianting.(2004).Effect of Heat Treatment on Microstructure and Microhardness of Directionally Solidified NiAl-Cr（Mo）-Hf Intermetallic Alloy.材料热处理学报,25.0(005),165-168.
MLA	Xie Xishan,et al."Effect of Heat Treatment on Microstructure and Microhardness of Directionally Solidified NiAl-Cr（Mo）-Hf Intermetallic Alloy".材料热处理学报 25.0.005(2004):165-168.