| Effect of Heat Treatment on Microstructure and Microhardness of Directionally Solidified NiAl-Cr（Mo）-Hf Intermetallic Alloy | |
| Alternative Title | Effect 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
 |
| ISSN | 1009-6264 |
| Volume | 25.0Issue:005Pages:165-168 |
| Abstract | 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. |
| Other Abstract | 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. |
| Keyword | 热处理 显微结构 显微硬度 NiAl-Cr（Mo）-Hf合金 |
| Indexed By | CSCD |
| Language | 中文 |
| CSCD ID | CSCD:1846491 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/151571 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 1.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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