Cu-(石墨烯/6063Al)复合材料的设计制备及组织性能研究  

Design,fabrication,microstructure and properties of Cu-(graphene/6063Al)composites

作　　者：张可萌 柳培[1,2] 王杰 侯博 刘振伟 高岩 ZHANG Kemeng;LIU Pei;WANG Jie;HOU Bo;LIU Zhenwei;GAO Yan(College of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471023,China;Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology,Luoyang 471023,China;Henan Institute of Metallurgy Co.,LTD,Zhengzhou 450000,China)

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023 [2]有色金属新材料及先进加工技术省部共建协同创新中心,河南洛阳471023 [3]河南省冶金研究所有限责任公司,河南郑州450000

出　　处：《粉末冶金工业》2024年第2期75-80,共6页Powder Metallurgy Industry

基　　金：河南省科学院科研开发专项(220910009)。

摘　　要：以6063Al合金粉末、石墨烯纳米片和厚度为2 mm的纯Cu片为原材料,利用冷等静压+真空热压烧结+热挤压的方法制备了Cu-6063Al复合材料含0.5%、1.0%(质量分数)石墨烯的Cu-(石墨烯/6063Al)复合材料。通过XRD、SEM和拉伸试验机对三种复合材料进行物相分析、微观组织和断口的SEM形貌表征及力学性能测试。试验结果表明:石墨烯/6063Al与Cu的冶金结合,能够有效抑制Al原子的扩散,从而对Cu-6063Al复合材料中Cu/Al界面处Al4Cu9、Al2Cu和AlCu三种金属间化合物的形成起到抑制作用。0.5%和1.0%含量的Cu-(石墨烯/6063Al)复合材料的抗拉强度为76.9 MPa和101.3 MPa,相比Cu-6063Al复合材料分别提高了40%和83.8%,而伸长率均有所降低。Cu-(1.0%石墨烯/6063Al)复合材料具有优异的力学性能,一方面源于Cu/Al界面处少量的脆性相,另一方面源于靠近界面层的Al侧存在数量更多、尺寸更小、更深的韧窝、较宽的撕裂棱和更紧密结合、均匀分布的石墨烯纳米片。In this paper,the Cu-6063Al composites and 0.5%,1.0%content Cu-(graphene/6063Al)composites were fabricated by cold isostatic pressing+vacuum hot pressing sintering+hot extrusion method using 6063Al alloy powders,graphene nanosheets and pure Cu sheet with a thickness of 2 mm as raw materials.The phase analysis,microstructure,fracture characterization and mechanical properties of the three composites were investigated by XRD,SEM and tensile testing machine.The metallurgical composite of graphene/6063Al and Cu can effectively inhibit the diffusion of Al atoms,and thus inhibit the formation of Al_(4)Cu_(9),Al_(2)Cu和AlCu intermetallic com-pounds at the Cu/Al interface in Cu-6063Al composites.The tensile strength of 0.5%and 1.0%Cu-(graphene/6063Al)composites is 76.9 MPa and 101.3 MPa,which are 40%and 83.8%higher than that of Cu-6063A1 composites respectively,and the elongation is decreased.The Cu-(1.0%graphene/6063Al)composite possess excellent mechanical properties,due to a small amount of brittle phase at the Cu/Al interface and more,smaller,deeper dimples,wider tearing edges and tighter distribution of graphene nanosheets near the interface layer of Al side.

关 键 词：石墨烯纳米片 Cu-(石墨烯/Al)复合材料 界面层 析出相 断口形貌 

分 类 号：TB333[一般工业技术—材料科学与工程]