材料工程Issue(11)：1-5,5.
原位Al2O3P/7075复合材料微观组织与磨损行为
Microstructure and Wear Behaviors of In-situ Al2O3p/7075 Composites
摘要
Abstract
The Al2O3P/7075 Al composites were synthesized by in-situ reaction near-liquidus casting. The microstructure and dry sliding wear behavior of the prepared composites were analyzed using OM, SEM and TEM as well as wear friction testing. The results reveal that in-situ Al2O3 particle with average size of approximately <1μm is uniformly distributed in the matrix, which exhibits desirable refining effects on microstructure of 7075 Al alloy. The wear behavior of the composites is greatly superior to that of the matrix, which is attributed to the grain refining and formation of a compact interface of Al2O3P/7075 Al composites. In addition, in-situ Al2O3 particles exhibit coupling effects of inhibiting metal flow and bearing some load in process of friction. The wear mechanism of the matrix 7075A1 alloy is adhesive wear, while the wear surface of Al2O3p/7075 Al composites is superior to that of the matrix 7075 Al alloy. The wear mechanism of Al2O3P/7075 Al composites is abrasive wear, and wear resistance of Al2O3P/7075 Al is improved.关键词
原位Al2O3颗粒/铝基复合材料/组织/耐磨性能Key words
in-situ Al2O3 particles/aluminum matrix composites/microstructure/wear resistance分类
通用工业技术引用本文复制引用
刘慧敏,杨树青,许萍,李进福..原位Al2O3P/7075复合材料微观组织与磨损行为[J].材料工程,2012,(11):1-5,5.基金项目
内蒙古自然科学基金项目(20080404ZD17) （20080404ZD17）
