| Compression Creep Behavior of High Volume Fraction of SiC Particles Reinforced AI Composite Fabricated by Pressureless Infiltration |
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| 作者姓名： | XU Fu-min WU Lawrence Chi-man HAN Guang-wei TAN Yi |
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| 作者单位： | [1]State Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China [2]Department of Physics and Materials Science, City University of Hongkong, Kowloon, HK SAR, China [3]Central Iron and Steel Research Institute, Beijing 100081, China |
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| 基金项目： | Foundation item： HK Research Project （9040749） Thanks are due to Dr. ZHU Shi-jie for his usefill advice. |
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| 摘 要： |
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| 关 键 词： | 复合材料 炭化硅 铝合金 铸造学 |
| 修稿时间： | 2006-08-102006-11-17 |
Compression Creep Behavior of High Volume Fraction of SiC Particles Reinforced AI Composite Fabricated by Pressureless Infiltration |
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| XU Fu-min WU Lawrence Chi-man HAN Guang-wei TAN Yi.Compression Creep Behavior of High Volume Fraction of SiC Particles Reinforced AI Composite Fabricated by Pressureless Infiltration[J].Chinese Journal of Aeronautics,2007,20(2):115-119. |
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| Abstract: | The compression creep deformation of the high volume fraction of SiC particles reinforced AI-Mg-Si composite fabricated by pressure-less infiltration was investigated. The experimental results show that the creep stress exponents are very high at temperatures of 673 K, 723 K and 773 K, and if taking the threshold stress into account, the true stress exponent of minimum creep strain rate is still approximately 5, although the volume fraction of reinforcements is very high. The creep strain rate in the high volume fraction reinforced aluminum alloy matrix composites is controlled by matrix lattice diffusion. It is found that the creep-strengthening effect of high volume fraction of silicon carbide particles is significant, although the particles do not form effective obstacles to dislocation motion. |
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| Keywords: | composite creep SiC aluminum |
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