Microstructural Characterization and Mechanical Property of Fly Ash/Al-25Mg Composites  

作　　者：王庆平 MIN Fanfei ZHU Jinbo 

机构地区：[1]School of Materials Science and Engineering, Anhui University of Science and Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2014年第5期1019-1022,共4页武汉理工大学学报（材料科学英文版）

基　　金：Funded by National Natural Science Foundation of China(No.51174006);Anhui Provincial Natural Science Foundation(No.1208085QE100);Educational Commission of Anhui Province of China(No.KJ2012ZD05)

摘　　要：Fly ash/Al-Mg composites are fabricated by powder metallurgical method. The morphology and structure of fly ash/A l-Mg composites are characterized by scanning electron microscope （SEM） and X-ray diffraction, respectively. The influences of different fly ash content on the friction and wear behavior of the composites are investigated at a constant sliding velocity of 400 r/min and the worn mechanism of composites is discussed. The results indicate that the friction coefficient is steadily lower than that of Al alloy matrix at the lower fly ash content and loads. For the fly ash/Al-Mg composites, the wear mechanism is characterized as abrasive wear and adhesive wear under small normal load and at low fly ash content, and it is characterized as delamination wear and abrasive wear transferred onto the counterpart under high normal load and at high fly ash content.Fly ash/Al-Mg composites are fabricated by powder metallurgical method. The morphology and structure of fly ash/A l-Mg composites are characterized by scanning electron microscope （SEM） and X-ray diffraction, respectively. The influences of different fly ash content on the friction and wear behavior of the composites are investigated at a constant sliding velocity of 400 r/min and the worn mechanism of composites is discussed. The results indicate that the friction coefficient is steadily lower than that of Al alloy matrix at the lower fly ash content and loads. For the fly ash/Al-Mg composites, the wear mechanism is characterized as abrasive wear and adhesive wear under small normal load and at low fly ash content, and it is characterized as delamination wear and abrasive wear transferred onto the counterpart under high normal load and at high fly ash content.

关 键 词：fly ash MICROSTRUCTURE friction and wear wear mechanism 

分 类 号：TB333[一般工业技术—材料科学与工程]