Effect of Heat Treatment on Microstructure and Wear Characteristic of Al-Cu-Mg/SiCp Braking and Wear-resistant Composites Produced by Hot Pressing
ZHANG Yang1,2, ZHANG Haiyan3, CHEN Yunbo1,2,4, WANG Dapeng4, CHEN Lin1,2, LIU Xiaoping3
1 State Key Laboratory for Advanced Forming Technology and Equipment, China Academy of Machinery Science and Technology Group Co., ltd., Beijing 100083, China; 2 Beijing National Innovation Institute of Lightweight Ltd., Beijing 100083, China; 3 Shandong Longji Machinery Co., Ltd., Yantai 265700, China4 School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Abstract: Particles reinforced aluminum matrix composite has been the main candidate material for the braking and wear-resistant components. In this work, Al-Cu-Mg/SiCp composites were well produced by hot pressing method. By means of comparative study on the microstructure of composites with and without heat treatment, as well as the morphology and phase composition of wore surfaces, the variation of the properties, especially the friction and wear characteristics, were analyzed. Further, the possible alterations during the wearing process and its effects were explained. Routed by proper T6 heat treatment, the properties of composites were significantly optimized. The tensile strength was raised from 268 MPa to 387 MPa, which is about 44% improvement, the elongation was changed from 6.0% to 5.6%, which is stable roughly, and the specific wear rate was reduced from 0.153 mm3·(N·km)-1 to 0.095 mm3·(N·km)-1, which is about 38% reduction.
张洋, 张海燕, 陈蕴博, 王大鹏, 陈林, 刘晓萍. 热处理对热压制备Al-Cu-Mg/SiCp制动耐磨复合材料组织及磨损性能的影响[J]. 材料导报, 2020, 34(Z1): 356-360.
ZHANG Yang, ZHANG Haiyan, CHEN Yunbo, WANG Dapeng, CHEN Lin, LIU Xiaoping. Effect of Heat Treatment on Microstructure and Wear Characteristic of Al-Cu-Mg/SiCp Braking and Wear-resistant Composites Produced by Hot Pressing. Materials Reports, 2020, 34(Z1): 356-360.
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2020, Vol. 34 
