热处理对GNP-Al复合材料显微组织和性能的影响  

Effect of heat treatment on microstructure and performance of GNP-Al composites

作　　者：简正豪[1] 邹金红[1] 陈佳[1] 赵英[1] 曾敏[2] Jian Zhenghao;Zou Jinhong;Chen Jia;Zhao Ying;Zeng Min(School of Mechanical and Vehicle Engineering,Nanchang Institute of Science and Technology,Nanchang 330108,China;School of Aeronautical Manufacturing Engineering,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]南昌工学院机械与车辆工程学院,江西南昌330108 [2]南昌航空大学航空制造工程学院,江西南昌330063

出　　处：《轻金属》2024年第6期39-44,共6页Light Metals

基　　金：江西省教育厅科技课题(GJJ212512);江西省教育厅科技课题(GJJ212522)。

摘　　要：本文以石墨烯为增强相,采用高能超声辅助铸造法及后续热处理制备了铝基复合材料,并研究石墨烯和热处理对复合材料显微组织、力学性能和耐磨性能的影响。结果表明,石墨烯促进了复合材料晶粒细化,且热处理后Si相进一步细化及圆整。经热处理后复合材料的屈服强度和抗拉强度(245和319MPa)比基体(119和202MPa)分别提高了105.9%、57.9%。磨损试验结果表明,添加石墨烯和T6热处理后复合材料的磨损率最低,磨损机制由剥层磨损转变为磨粒磨损。In this paper,graphene-reinforced aluminum matrix composites were prepared by high-energy ultrasound-assisted casting and subsequent heat treatment.Effect of graphene and heat treatment on the microstructure,mechanical properties and wear resistance of composites were investigated.The results show that the graphene promotes the grain refinement of the composites,and the Si phases are further refined and rounded after heat treatment.The yield strength and tensile strength of composites after heat treatment(245 and 319 MPa)are increased by 105.9%and 57.9%,respectively,compared with those of the matrix(119 and 202 MPa).The results of the wear test show that the lowest wear rate is observed in the composites after the addition of graphene and T6 heat treatment,and the wear mechanism is changed from exfoliation wear to abrasive wear.

关 键 词：石墨烯 铝基复合材料 热处理 显微组织 耐磨性能 

分 类 号：TF821[冶金工程—有色金属冶金] TB333[一般工业技术—材料科学与工程]