Microstructure, precipitates and compressive properties of various holmium doped NiAl/Cr(Mo, Hf) eutectic alloys
文献类型：期刊论文
| 作者 | L. Y. Sheng ; L. J. Wang ; T. F. Xi ; Y. F. Zheng ; H. Q. Ye |
| 刊名 | Materials & Design
 |
| 出版日期 | 2011 |
| 卷号 | 32期号:10页码:4810-4817 |
| 关键词 | Intermetallics Mechanical properties Microstructure mechanical-properties magnetic-field nial-cr intermetallics |
| ISSN号 | 0261-3069 |
| 中文摘要 | The microstructure and mechanical properties of NiAl-28Cr-6Mo-0.2Hf eutectic alloys with various holmium additions have been investigated by using of SEM, TEM and compression test. The results reveal that minor Ho addition could optimize the microstructure by refining the lamella inside of eutectic cell and controlling the coarsening of intercellular region. However the minor Ho addition results in the Ni(2)Al(3)Ho phase, which has hexagonal crystal structure and an orientation relationship with NiAl phase of [1 2 0](Ni2Al3Ho)//[1 1 1](NiAl) and (0 0 $$(2) over bar)(Ni2Al3Ho)//(1 $(1) over bar $ 0)(NiAl). Moreover the Ni(17)Ho(2) phase is found in the Ni(2)Al(3)Ho phase, which has twin crystal inside and an orientation relationship with Ni(2)Al(3)Ho phase of [1 2 3](Al17Ho2)//[1 2 4](Ni2Al3Ho) and (1 1 $$(1) over bar)(Al17Ho2)//((2) over bar 1 0)(Ni2Al3Ho). In addition, the Ho addition promotes the precipitation of Ni(2)AlHf phase. More Ho addition coarsens the Cr(Mo) phases along the intercellular and results in more strengthening precipitates inside eutectic cell. When the Ho addition comes to 0.5 at.%, the alloy almost loses the cellular eutectic characteristic and exhibits a microstructure with coarse NiAl, massive Cr(Mo) and Ni(2)Al(3)HO phases. The microstructure optimizations improve the mechanical properties of the alloy significantly, especially the alloy with 0.1 at.% Ho content. (C) 2011 Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/30653]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | L. Y. Sheng,L. J. Wang,T. F. Xi,et al. Microstructure, precipitates and compressive properties of various holmium doped NiAl/Cr(Mo, Hf) eutectic alloys[J]. Materials & Design,2011,32(10):4810-4817. |
| APA | L. Y. Sheng,L. J. Wang,T. F. Xi,Y. F. Zheng,&H. Q. Ye.(2011).Microstructure, precipitates and compressive properties of various holmium doped NiAl/Cr(Mo, Hf) eutectic alloys.Materials & Design,32(10),4810-4817. |
| MLA | L. Y. Sheng,et al."Microstructure, precipitates and compressive properties of various holmium doped NiAl/Cr(Mo, Hf) eutectic alloys".Materials & Design 32.10(2011):4810-4817. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。