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Effect of Heat Treatment on Microstructure and Microhardness of Directionally Solidified NiAl-Cr(Mo)-Hf Intermetallic Alloy
Alternative TitleEffect of Heat Treatment on Microstructure and Microhardness of Directionally Solidified NiAl-Cr(Mo)-Hf Intermetallic Alloy
Xie Xishan1; Xu Chunmei1; Guo Jianting2
2004
Source Publication材料热处理学报
ISSN1009-6264
Volume25.0Issue:005Pages:165-168
AbstractThe 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.
Other AbstractThe 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.
Keyword热处理 显微结构 显微硬度 NiAl-Cr(Mo)-Hf合金
Indexed ByCSCD
Language中文
CSCD IDCSCD:1846491
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/151568
Collection中国科学院金属研究所
Affiliation1.北京科技大学
2.中国科学院金属研究所
Recommended Citation
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.
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