Dry wear behavior of rheo-casting Al-16Si-4Cu-0.5Mg alloy

作     者：胡钊华 吴国华 徐佳 莫文飞 李艳磊 刘文才 张亮 丁文江 Jonathan QUAN Yuan-Wei CHANG Zhao-hua HU;Guo-hua WU;Jia XU;Wen-fei MO;Yan-lei LI;Wen-cai LIU;Liang ZHANG;Wen-jiang DING;Jonathan QUAN;Yuan-Wei CHANG

作者机构：上海交通大学轻合金精密成型国家工程研究中心与金属基复合材料国家重点实验室上海200240 Department of Materials Science and EngineeringUniversity of California Los Angeles 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2016年第26卷第11期

页      面：2818-2829页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Project(51404153)supported by the National Natural Science Foundation of China Project supported by the Joint Ph D Program of the China Scholarship Council(CSC) 

主　　题：rheo-casting aluminum alloy dry wear micro-scratch 

摘      要：Dry wear behavior of the rheo-casting Al-16Si-4Cu-0.5Mg alloy was investigated by micro-scratch and dry sliding weartests. Analyses of the microstructure, scratch grooves, wear tracks, worn surfaces and wear debris of the alloy were carried out byoptical microscope and scanning electron microscope. The microstructural analysis showed that via rheo-processing, the primary Siwas refined and rounded, eutectics dispersed more homogenously, and even the skeleton AlFeMnSi phase was fragmented into facetshape. Micro-scratch test showed that the microstructural refinement resulted in better wear resistance. Dry sliding wear test revealedthat the rheo-processed sample exhibit obviously superior wear resistance because of the microstructure improvement. The dominantmechanism in mild wear condition is abrasion, but it turned to adhesion and oxidation in high applied load and fast sliding velocityconditions.