| 热残余应变对金属基复合材料拉、压性能的影响 |
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| 引用本文： | 李文方,蒙继龙,杜善义.热残余应变对金属基复合材料拉、压性能的影响[J].金属学报,1995,31(17):226-232. |
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| 作者姓名： | 李文方 蒙继龙 杜善义 |
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| 作者单位： | 华南理工大学，哈尔滨工业大学 |
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| 基金项目： | 国家教委博士点基金,华南理工大学基金 |
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| 摘 要： | 利用作者改进的等效夹杂理论定量研究了热残余应变对晶须增强金属基复合材料拉、压性能的影响，解释了非铸态复合材料拉、压性能存在差别的原因。对２０％ＳｉＣＷ／Ａｌ材料的拉、压性能和断口的ＳＥＭ观察表明，本文理论合理反映了晶须增强金属基复合材料的塑性强化规律，说明热残余应变是影响晶须增强金属基复合材料的重要因素，为该类材料的性能预报和优化设计提供了理论方法．
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| 关 键 词： | 热残余应变，晶须，金属基复合材料，拉、压性能 |
INFLUENCE OF RESIDUAL THERMAL STRAIN ON TENSION AND COMPRESSION BEHAVIORS OF METAL MATRIX COMPOSITES |
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| LI Wenfong, MENG Jilong ,DU Shanyi.INFLUENCE OF RESIDUAL THERMAL STRAIN ON TENSION AND COMPRESSION BEHAVIORS OF METAL MATRIX COMPOSITES[J].Acta Metallurgica Sinica,1995,31(17):226-232. |
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| Authors: | LI Wenfong MENG Jilong DU Shanyi |
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| Affiliation: | LI Wenfong,(Laboratory of Heat Treatment,No. Deportment of Mechanical Engineering. South China University of Technology,Guangzhou,) MENG Jilong (South China University of Technology,GuangzhouJI),DU Shanyi(Harbin Institute of Technology,Harbin ) |
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| Abstract: | Residual thermal strain is an important factor which affects the behaviors of metal matrix composites. The modified equivalent inclusion theory is employed to investigate the influence of the residual thermal strain on the tension and compression behaviors of metal matrix composites quantitatively. The difference between the tension and compression behaviors of noncasting composites has been interpreted. Through the experiment about the tension and compression behaviors of 20% SiCw / Al and the observation of the fracture surface, it is proved that the theoretical model reflects the plastic principle of the whisker reinforced metal matrix composites and indicates the necessity of considering residual thermal strain. The theoretical model provides a method to estimate material behaviors and optimal design. |
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| Keywords: | residual thermal strain whisker metal matrix composites tension compression |
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