基于液/半固态铸造复合的5083/AZ31B层状复合材料界面研究  

Study on the Interface of Layered Composites 5083/AZ31B Based on Liquid-semisolid Casting

作　　者：刘力 朱永长[1] 张圳炫 王迪 LIU Li;ZHU Yong-chang;ZHANG Zhen-xuan;WANG Di(School of Material Science and Engineering, Jiamusi University, Jiamusi Heilongjiang 154007, China)

机构地区：[1]佳木斯大学材料科学与工程学院

出　　处：《铸造设备与工艺》2019年第4期56-58,共3页Foundry Equipment & Technology

基　　金：佳木斯大学校长创新创业基金资助项目(XZYF-2018-27)

摘　　要：针对单一镁合金耐蚀性差的问题,采用液/半固态铸造复合法制备了5083/AZ31B层状复合材料。借助金相显微镜以及X射线衍射对层状材料复合界面显微组织和相组成进行了分析。利用显微硬度仪对复合界面区域进行显微硬度测试。结果表明:液/半固态铸造法制备的5083/AZ31B复层材料获得了良好的冶金结合;层状复合材料分为3个明显区域:镁合金基体、铝合金基体和宽度约为38μm的中间元素扩散区;中间元素扩散区以Mg17Al12和Mg2Al13等金属间化合物为主,其显微硬度明显高于两侧基体的硬度。Considering the poor corrosion resistance of single magnesium alloy,5083/AZ31B layered composite was prepared by liquid/semisolid casting method.The microstructure and phase composition of layered composite interface were analyzed by means of metallographic microscope and X-ray diffraction.The microhardness of composite interface area was tested by microhardness tester.The results showed that the 5083/AZ31B layered material prepared by liquid/semisolid casting method obtained good metallurgical bonding.Layered composites are divided into three distinct zones:magnesium alloy matrix,aluminum alloy matrix and intermediate element diffusion zone with width of about 38 μm.Intermetallic compounds,such as Mg_(17)Al_(12) and Mg_2 Al_3,dominated the diffusion zone of intermediate elements,and their microhardness was significantly higher than that of the matrix on both sides.

关 键 词：5083/AZ31B 层状复合材料 液/半固态铸造复合法 显微组织 

分 类 号：TG292[金属学及工艺—铸造]