累积叠轧法制备镁碳多层复合材料-中国材料进展

文章信息/Info

Title:: Fabrication of magnesium carbon multilayered composites by accumulative roll-bonding

作者:: 李天龙1; 2; 3; 樊建锋1; 2; 3; 张华1; 2; 3; 董洪标1; 2; 3; 许并社1; 2; 3; 1.新材料界面科学与工程教育部重点实验室，太原理工大学，山西太原 030024； 2.山西省新材料工程技术研究中心，太原理工大学，山西太原 030024； 3.太原理工大学材料科学与工程学院，山西太原 030024

Author(s):: Li Tianlong1; 2; 3; Fan Jianfeng1; 2; 3; Zhang Hua1; 2; 3Dong Hongbiao1; 2; 3; Xu Bingshe1; 2; 3; 1. Key laboratory of interface science and engineering in advanced materials, Ministry of Education, Taiyuan University of Technology; Taiyuan 030024, China; 2. Shanxi research center of advanced materials science and technology, Taiyuan University of Technology; Taiyuan 030024, China; 3. College of material science and technology, Taiyuan university of technology, Taiyuan 030024, China

摘要:: 当前镁合金的研究主要集中于镁合金及其复合材料的制备与加工，但对制备轻金属纳米多层复合材料的研究很少。本文通过在镁合金板之间插嵌镁粉与多臂碳纳米管(CNTS)的球磨混合粉，然后在一定温度下采用累积叠轧(ARB)的方法，制备镁碳多层复合材料。分别用扫描电镜和光学显微镜来表征累积叠轧过程中材料微观组织的演变。结果表明本文所采用的工艺制备出了层界面之间机械结合较好的镁碳多层复合材料，由于部分镁合金层之间存在融合现象，其理论层厚为685 nm，实际层厚约为4μm。另外，在反复动态再结晶和层界面对晶粒长大的阻碍作用的共同作用下，材料中较薄的镁合金层具有较细小的晶粒。

Abstract:: The current studies on magnesium alloy focused on the preparation of magnesium alloy and its composite materials, and the preparation of light metal nano-multilayer composites was rarely studied. In this paper, magnesium carbon multilayer of materials was prepared by applying seven cycles of accumulative roll bonding under certain temperature to magnesium sheets coated with ball-milled Mg/CNTS powders.The evolution of the microstructure on the process of accumulative roll-bonding is respectively characterized by scanning electron microscope and optical microscopy. The results show that the interface bonding of the magnesium carbon multilayer of materials is mechanical bonding under the process used in this paper. The theoretical thickness of magnesia carbon multi-layer is about 685 nm, and the actual thickness is about 4 μm due to partial magnesium alloy layer integration. In addition, in the role of repeated dynamic recrystallization and layer interface on grain growth of obstacles, the material in a thin layer of magnesium alloy has a fine grain.