热轧铝合金复合板的显微组织与力学性能  

Microstructure and mechanical properties of composite sheets of aluminum alloy prepared by hot rolling

作　　者：李滔[1] 王顺成[1] 戚文军[1] 郑开宏[1] 谢红聚 谢建雄 

机构地区：[1]广东省工业技术研究院(广州有色金属研究院)金属加工与成型技术研究所,广东广州510650 [2]广东星湖新材料有限公司,广东肇庆526070

出　　处：《轻合金加工技术》2015年第2期38-42,共5页Light Alloy Fabrication Technology

基　　金：广东省科技厅产学研结合项目(2012B090600051);肇庆市科技局产学研结合技术创新项目(2012C007)

摘　　要：采用热轧复合工艺制备了4343/3003/4343、4343/3003/7072两种热交换器用铝合金复合板,利用光学显微镜、电子拉伸试验机和扫描电镜,研究了铝合金复合板的包覆率、显微组织和力学性能。结果表明,两种铝合金复合板的包覆层厚度均匀、复合界面平整,其中4343/3003/4343复合板两层4343铝合金包覆层的包覆率分别为9.3%和9.4%,复合板的抗拉强度和伸长率分别为116.53 N/mm2和40.32%。4343/3003/7072复合板中4343、7072铝合金包覆层的包覆率分别为9.0%和8.1%,复合板的抗拉强度和伸长率分别为118.62 N/mm2和32.48%。The 4343 /3003 /4343 and 4343 /3003 /7072 composite sheets of aluminum alloy were prepared by the combined hot-rolling process for heat exchangers. The cladding percentage,microstructure and mechanical properties of both composite sheets of aluminum alloy were investigated by OM,ETTM and SEM. The results show that the clad thickness of both sheets is uniform and the composite interface is smooth. The cladding percentage of the two clads of 4343 aluminum alloy in the 4343 /3003 /4343 composite sheet is 9. 3% and 9. 4%,respectively. The tensile strength is 116. 53 N / mm^2 and the elongation is 40. 32%. The cladding percentage of the clads of 4343 and 7072 aluminum alloy in the 4343 /3003 /7072 composite sheet is 9. 0% and 8. 1%,respectively. The tensile strength is 118. 62 N / mm^2 and the elongation is 32. 48%.

关 键 词：铝合金复合板 热轧复合 包覆率 热交换器 

分 类 号：TG146.21[一般工业技术—材料科学与工程]