晶须增强金属基复合材料微结构参数优化设计

摘要

讨论了增强体体积比、长径比、基体与增强体的模量比以及增强体取向分布、基体的热处理状态对复合材料刚度模量的影响，建立了晶须增强金属基复合材料微结构参数与宏观力学性能间的定量关系，探索了晶须增强金属基复合材料微结构参数优化设计方法，给出了该材料微结构参数优化设计的典型算例。%The influence on the stiffness modulus of composites exerted by the volume fraction of reinforcers, aspect ratio, the modulus ratio of the whisker to the matrix, the effect of reinforcers orientation and heat treatment state is discussed, the quantificational relations between micro-structure parameters of the short-fiber/whisker reinforced metal matrix composite and its macro mechanical properties are built, and an optimal design method of micro-structure parameters about original isotropy and singularity tropism distribution of the whisker reinforced metal matrix composite is developed. Typical optimal design examples concerning the micro-structure parameter of this kind of material are presented.