Microstructure and Elevated Temperature Tensile Behavior of Directionally Solidified Ni-rich NiAl-Mo(Hf) Alloy
文献类型：期刊论文
| 作者 | P. Han ; Y. H. Qi ; J. T. Guo |
| 刊名 | Journal of Materials Science & Technology
 |
| 出版日期 | 2011 |
| 卷号 | 27期号:5页码:437-442 |
| 关键词 | NiAl alloy Directional solidification Superplasticity Creep multiphase intermetallic alloy mechanical-properties fracture-behavior creep-behavior superplasticity compound |
| ISSN号 | 1005-0302 |
| 中文摘要 | The microstructure, high strain rate superplasticity and tensile creep behavior of directionally solidified (DS) NiAl-Mo(Hf) alloy have been investigated. The alloy exhibits dendritic structure, where dendritic arm is NiAl phase, interdendritic region is Ni(3)Al phase, and Mo-rich phase distributes in the NiAl and Ni(3)Al phases. The alloy exhibits high strain rate superplastic deformation behavior, and the maximum elongation is 104.2% at 1373 K and strain rate of 1.04x10(-2) s(-1). The balance between strain hardening (by dislocation glide) and strain softening (by dynamic recovery and recrystallization) is responsible for the superplastic deformation. All the creep curves of the DS NiAl-Mo(Hf) alloy have similar shape of a short primary creep and dominant steady creep stages, and the creep strain is great. The possible creep deformation mechanism was also discussed. The creep fracture data follow the Monkman-Grant relationship. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30373]  |
| 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 | P. Han,Y. H. Qi,J. T. Guo. Microstructure and Elevated Temperature Tensile Behavior of Directionally Solidified Ni-rich NiAl-Mo(Hf) Alloy[J]. Journal of Materials Science & Technology,2011,27(5):437-442. |
| APA | P. Han,Y. H. Qi,&J. T. Guo.(2011).Microstructure and Elevated Temperature Tensile Behavior of Directionally Solidified Ni-rich NiAl-Mo(Hf) Alloy.Journal of Materials Science & Technology,27(5),437-442. |
| MLA | P. Han,et al."Microstructure and Elevated Temperature Tensile Behavior of Directionally Solidified Ni-rich NiAl-Mo(Hf) Alloy".Journal of Materials Science & Technology 27.5(2011):437-442. |
入库方式： OAI收割
来源：金属研究所
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