累积叠轧制备石墨烯/铝复合材料的组织与性能  

Microstructure and Properties of Graphene/Aluminum Composites Prepared by Accumulative Roll Bonding

作　　者：江鹏[1,2] 李骆宾 张可 任广猛[1] 张屹 宋广生 JIANG Peng;LI Luobin;ZHANG Ke;REN Guangmeng;ZHANG Yi;SONG Guangsheng(Changzhou High Technology Research Key Laboratory of Mould Advanced Manufacturing,School of Mechanical Engineering,Changzhou University,Changzhou 213164,China;School of Materials Science and Engineering,Anhui University of Technology,Maanshan 243002,China)

机构地区：[1]常州大学机械工程学院常州市模具先进制造高技术研究重点实验室,江苏常州213164 [2]安徽工业大学材料科学与工程学院,安徽马鞍山243002

出　　处：《热加工工艺》2022年第22期68-73,共6页Hot Working Technology

基　　金：国家自然科学基金项目(51705038、51875053);中国博士后科学基金项目(2019M652158);江苏省自然科学基金项目(BK20150268)。

摘　　要：石墨烯增强Al基复合材料被认为是潜在的高强韧性Al基材料,应用前景广阔。采用累积叠轧(ARB)制备了石墨烯/铝(G/Al)层状复合材料,采用光学显微镜(OM)、电子万能试验机、扫描电镜(SEM)等研究ARB道次和石墨烯对复合材料的显微组织、室温力学性能、拉伸断口形貌的影响。结果表明:ARB道次的增加有利于界面的结合,且使石墨烯层厚减小,在G/Al复合材料中单位面积分布均匀性增加(层状分布)。ARB道次和石墨烯对G/Al复合材料力学性能有较大的影响。石墨烯的增强作用导致G/Al复合材料的侧面硬度和强度高于Al/Al复合材料的硬度和强度,伸长率有所降低。随着ARB道次增加,G/Al复合材料相对Al/Al复合材料的硬度和强度的提高速率增加,而伸长率的降低速率减小。石墨烯对Al基复合材料增强提塑效应随ARB道次增加而愈加明显。Graphene reinforced Al matrix composites are considered to be potentially high-strength Al tough materials with promising applications, which have a wide application prospect. Graphene/aluminum(G/Al) composites were prepared by accumulative roll bonding(ARB). The effects of ARB passes and graphene on the microstructure, mechanical properties at room temperature, and fracture morphology of the composite were studied by optical microscope(OM), electronic universal testing machine, scanning electron microscope(SEM). The results show that the increase of ARB passes is beneficial to the interface bonding, and make the thickness thin and the uniformity increases of unit area distribution(layer distribution) of graphene layer in G/Al composite. The mechanical properties of G/Al composites are greatly affected by the ARB pass and graphene. The lateral hardness and strength of G/Al composite are higher than that of Al/Al composite due to the reinforcement of graphene, but the elongation is lower. The rate of increase in hardness and strength of G/Al composites increases compared with Al/Al composites, while the rate of decrease in elongation reduces, and the enhanced plasticizing effect of graphene on Al-based composites become more apparent with the increase of ARB passes.

关 键 词：累积叠轧 石墨烯 铝基复合材料 力学性能 

分 类 号：TB333.12[一般工业技术—材料科学与工程]