Thermal Cyclic Effects of Metal Matrix Composites  

金属基复合材料的热循环影响(英文)

作　　者：吴效白 廖力[1] 胡更开[1] 

机构地区：[1]北京理工大学应用力学系,北京100081

出　　处：《Journal of Beijing Institute of Technology》1998年第4期351-358,共8页北京理工大学学报（英文版）

基　　金：部级预研基金

摘　　要：Aim To simulate the thermal cyclic effects of metal matrix compeithe. Methods Based on Eshelby′s inclusion theory, a constitutive model for metal matrix composites and an elastic constraint method were formulated to predict the cyclic isothermal and cyclic thermomechanical behaviors of metal matrix composites. Results and Conclusion A SiC reinforced A1 2xxx-T4 composite was studied theoretically with the model. With the constitutive relation of the matrix, the mechanical behaviors of the composite under different loading condition, such as different loading rates, mechanical and thermal mechanical cyclic loading, can be quantitatively predicted. The thermal ratchetting effect of the composite can be predicted by the model.目的对金属基复合材料的热循环性能进行预测，方法基于Eshelby夹杂理论及由此而导出的金属基复合材料的本构模型和弹性约束法预测该材料的恒温疲劳与热疲劳性能，结果与结论从理论上对SiC颗粒增强AlZxxx-T4复合材料进行了分析；根据基体的本构关系，复合材料在不同加载条件下（如不同载荷率、力学和温度载荷等）的力学行为可以定量地预测出来，并且复合材料的热棘齿效应也可用给出的模型进行预测。

关 键 词：metal matrix composite thermomechanical behavior MICROMECHANICS 

分 类 号：TB33[一般工业技术—材料科学与工程]