| SiC颗粒增强AI基复合材料拉伸性能与断裂机理的研究 |
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| 引用本文： | 程羽,郭生武.SiC颗粒增强AI基复合材料拉伸性能与断裂机理的研究[J].西安交通大学学报,1999,33(9):94-97. |
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| 作者姓名： | 程羽 郭生武 |
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| 作者单位： | 西安交通大学,710049,西安 |
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| 基金项目： | 西安交通大学校科研和教改项目，国家重点实验室基金，，，， |
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| 摘 要： | 研究了颗粒增强铝基复合材料的室温拉伸性能与断裂机理。结果表明，由于为形的区域化及残余应力的存在，使应用传统诉测量均匀材料强度的方法来测量颗粒增强金属基复全材料（ＰＲＭＭＣｓ）强度会产生一定的误差，断口分析显示，ＰＲＭＭＣｓ的断裂也属于ＭＮＧ断裂模式。
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| 关 键 词： | 断裂 铝基复合材料 拉伸性能 碳化硅颗粒 增强 |
| 修稿时间： | 1998－09－16 |
Tensile and Fracture Properties of Al Matrix Composites Reinforced by SiC Particles |
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| Cheng Yu,Guo Shengwu,Guo Cheng,Zhu Jianmin,Chen Jinde.Tensile and Fracture Properties of Al Matrix Composites Reinforced by SiC Particles[J].Journal of Xi'an Jiaotong University,1999,33(9):94-97. |
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| Authors: | Cheng Yu Guo Shengwu Guo Cheng Zhu Jianmin Chen Jinde |
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| Abstract: | Examined are the tensile and fracture
properties of aluminum alloy matrix composites reinforced by SiC particles at room
temperature. Test results show that particles reinforced metal matrix composites (PRMMCs)
exhibit a progressive transition from local plastic flow to bulk flow. Thermal residual
stresses were induced by the difference in the coefficient of thermal expansion.
Deviations are found for the conventional 0.2% (proof) yield stress for the PRMMCs.
Fractography shows that fracture evolution entails a process of microvoid nucleation,
growth and coalescence for the PRMMCs. |
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| Keywords: | composites mechanical properties fracture |
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