摘要
采用原位反应液相线铸造法制备了Al2O3/Al-Cu复合材料及基体合金Al-Cu,分析其铸态组织,测试不同条件下复合材料及基体合金的滑动磨损特性。结果表明,在同等条件下(转速或压力相同)复合材料的耐磨性优于基体材料。这说明增强相的加入显著提高了材料的耐磨性,复合材料比基体的耐磨性提高了1.5～4.0倍;且复合材料的磨损量随着载荷的增加而增大,随着转速的升高而减小,它在高速低载条件下表现出较好的摩擦磨损特性。
Al2O3/Al-Cu composites were fabricated by in-situ reaction liquids casting method, and the as-cast microstructures were analyzed. The wear properties of the composites and matrix alloy were also studied under different conditions. The results show that the wear resistances of Al2O3/Al- Cu composites are superior to that of Al-Cu matrix alloy in the same conditions （with same load or velocity）. Because of the introduction of particle reinforcements, the wear resistance of the composite is enhanced by 1.5-4.0 times than that of its matrix. In addition, the wear mass loss of Al2O3/Al-Cu composites increases with increase of load, but decreases with increase of velocity. The wear resistance of the composites increases slightly at low load and high velocity.
出处
《铸造技术》
CAS
北大核心
2009年第8期1019-1021,共3页
Foundry Technology
