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INFLUENCE OF RESIDUAL THERMAL STRAIN ON TENSION AND COMPRESSION BEHAVIORS OF METAL MATRIX COMPOSITES |
LI Wenfong; (Laboratory of Heat Treatment; No. 2 Deportment of Mechanical Engineering. South China University of Technology; Guangzhou; 501641) MENG Jilong (South China University of Technology; GuangzhouJI0641); DU Shanyi(Harbin Institute of Technology; Harbin 150001) |
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Cite this article:
LI Wenfong; (Laboratory of Heat Treatment; No. 2 Deportment of Mechanical Engineering. South China University of Technology; Guangzhou; 501641) MENG Jilong (South China University of Technology; GuangzhouJI0641); DU Shanyi(Harbin Institute of Technology; Harbin 150001). INFLUENCE OF RESIDUAL THERMAL STRAIN ON TENSION AND COMPRESSION BEHAVIORS OF METAL MATRIX COMPOSITES. Acta Metall Sin, 1995, 31(17): 226-232.
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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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