Microstructural evolution and mechanical properties of new multi-phase NiAl-based alloy during heat treatments
文献类型：期刊论文
| 作者 | Y. Xie ; J. T. Guo ; L. Z. Zhou ; H. D. Chen ; Y. Long |
| 刊名 | Transactions of Nonferrous Metals Society of China
 |
| 出版日期 | 2010 |
| 卷号 | 20期号:12页码:2265-2271 |
| 关键词 | NiAl-based alloy heat treatment microstructure mechanical properties eutectic alloy temperature deformation behavior cr ti additions precipitation composites mo hf |
| ISSN号 | 1003-6326 |
| 中文摘要 | Microstructural evolution and the relationship between microstructure and property during heat treatments in a new NiAl-based alloy (Ni-26.6Al-13.4Cr-8.1Co-4.3Ti-1.3W-0.9Mo, molar fraction, %)) were investigated. The as-cast alloy is composed of NiAl matrix and Cr(3)Ni(2) phase with poor ductility. The Cr(3)Ni(2) phase is distributed as a network along the NiAl grain boundaries. Subsequent heat treatment (1 523 K, 20 h, air cooling+1 123 K, 16 h, furnace cooling) leads to the dissolution of Cr(3)Ni(2) phase and the precipitation of lath-shaped Ni(3)Al phase and alpha-Cr particles, resulting in the improvement of compressive properties and fracture toughness at room temperature. Followed by long-term thermal exposure (1 173 K, 8 500 h), it is found that the residual Cr(3)Ni(2) phase keeps stable while the alpha-Cr particles coarsen and a great mass of lath-shaped Ni(3)Al precipitates are degenerated, which compromises most of the above improvements of mechanical properties through heat treatment. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31601]  |
| 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 | Y. Xie,J. T. Guo,L. Z. Zhou,et al. Microstructural evolution and mechanical properties of new multi-phase NiAl-based alloy during heat treatments[J]. Transactions of Nonferrous Metals Society of China,2010,20(12):2265-2271. |
| APA | Y. Xie,J. T. Guo,L. Z. Zhou,H. D. Chen,&Y. Long.(2010).Microstructural evolution and mechanical properties of new multi-phase NiAl-based alloy during heat treatments.Transactions of Nonferrous Metals Society of China,20(12),2265-2271. |
| MLA | Y. Xie,et al."Microstructural evolution and mechanical properties of new multi-phase NiAl-based alloy during heat treatments".Transactions of Nonferrous Metals Society of China 20.12(2010):2265-2271. |
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。