Microstructure evolution and mechanical properties of Ni3Al/Al2O3 composite during self-propagation high-temperature synthesis and hot extrusion
文献类型：期刊论文
| 作者 | L. Y. Sheng ; F. Yang ; T. F. Xi ; J. T. Guo ; H. Q. Ye |
| 刊名 | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| 出版日期 | 2012 |
| 卷号 | 555页码:131-138 |
| 关键词 | Intermetallic Self-propagating synthesis Mechanical characterization Microstructure grain-boundary fracture environmental embrittlement ni3al alloy deformation ductility intermetallics strength aluminum growth |
| ISSN号 | 0921-5093 |
| 中文摘要 | The Ni3Al/Al2O3 composite was fabricated by self-propagation high-temperature synthesis with and without hot extrusion methods. Its microstructure and mechanical properties were investigated by using combination of optical microscope, transmission electron microscope and compression test. The results show that the Ni3Al/Al2O3 composite without hot extrusion has relative coarse microstructure, which contains gamma-Ni and Ni3Al3 phases along the Ni3Al phase boundary. In addition, kappa-Al2O3, theta-Al2O3, alpha-Al2O3 and cavities are observed in the composite without hot extrusion, which segregate greatly in original powder boundary. The hot extrusion process densifies the composite; eliminates the element segregation and redistributes Al2O3 particles homogeneously. Moreover fine Ni3Al crystalline with high density of dislocations and twinned Ni3Al crystals are observed in the extruded part. The hot extrusion improves the mechanical properties of the Ni3Al/Al2O3 composite significantly, especially its ductility. (C) 2012 Elsevier BM. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2013-02-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/60219]  |
| 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,F. Yang,T. F. Xi,et al. Microstructure evolution and mechanical properties of Ni3Al/Al2O3 composite during self-propagation high-temperature synthesis and hot extrusion[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2012,555:131-138. |
| APA | L. Y. Sheng,F. Yang,T. F. Xi,J. T. Guo,&H. Q. Ye.(2012).Microstructure evolution and mechanical properties of Ni3Al/Al2O3 composite during self-propagation high-temperature synthesis and hot extrusion.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,555,131-138. |
| MLA | L. Y. Sheng,et al."Microstructure evolution and mechanical properties of Ni3Al/Al2O3 composite during self-propagation high-temperature synthesis and hot extrusion".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 555(2012):131-138. |
入库方式： OAI收割
来源：金属研究所
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