分别采用常规黑白金相、彩色金相、微差干涉衬度试验方法对长纤维增强、短纤维增强、颗粒增强金属基复合材料显微组织进行了研究 ,结果表明 :三种试验方法虽各有其自己的优缺点 ,但微差干涉衬度试验方法具有一定的优越性 The microstructure of long fiber reinforced, short fiber reinforced and particle reinforced metal matrix composites were investigated by conventional black and white metallography, color metallography and differential interference contrast test. The results showed that although the three methods Its own advantages and disadvantages, but the method of interference with contrast test has some advantages