利用挤压铸造法制备了Al2O3+C/ZL109短纤维混杂金属基复合材料,并探讨了Al2O3纤维体积分数为12%时,C纤维含量对该混杂复合材料摩擦磨损性能的影响.结果表明:随着C纤维体积分数的增加,复合材料的摩擦因数和磨损率逐渐降低.12%Al2O3和4%C短纤维的协同作用使复合材料从轻微磨损到急剧磨损的临界转变载荷比基体合金提高了1倍.当载荷低于临界载荷时,复合材料的主要磨损机制为犁沟磨损和层离,C纤维的加入有利于磨损表面裂纹尺寸的减小.但随着载荷的逐渐增加并发生严重磨损时,基体和复合材料的磨损机制均为严重的粘着磨损甚至局部熔化磨损.
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