连续浇铸复合铸造法制备铝包钢双金属导线  

Preparation of Al clad steel bimetallic conductor by continuous pouring process for cladding

作　　者：刘建军 刘燕 李承霖 Liu Jianjun;Liu Yan;Li Chenglin(School of Metallurgy,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学冶金学院,沈阳110819

出　　处：《材料与冶金学报》2024年第5期472-477,共6页Journal of Materials and Metallurgy

基　　金：国家自然科学基金资助项目(52204419)。

摘　　要：针对包覆焊接法制备铝包钢线工艺复杂、能耗大的缺点,采用连续浇铸复合铸造法制备了铝包钢线,并系统性地研究了浇铸温度对铝包钢线两相结合面的显微组织演变及复合材料性能(硬度、导电率、密度)的影响.结果表明:当浇铸温度为820℃时,在铝和铁两相的界面结合处形成的扩散带中,Fe的质量分数为40.3%,Al的质量分数为59.7%,两相结合生成Fe_(2)Al_(5),此时铝包钢线的性能达到最佳,两相界面结合处的显微硬度(HV)为204,样品电导率为53.23%IACS(国际退火铜标准),密度为4.36 g/cm^(3).Aiming at the shortcomings of complex process and high energy consumption in the preparation of aluminum-clad steel wire by cladding welding method,the aluminum-clad steel wire was prepared by continuous pouring process for cladding(CPC),and the effect of pouring temperature on the microstructure evolution of the two-phase bonding surface and the properties(hardness,conductivity,density)of the composite material was systematically studied.The results show that when the pouring temperature is 820℃,the mass fraction of Fe in the diffusion layer formed at the interface between Al and Fe is 40.3%and the mass fraction of Al is 59.7%,and the two phases combine to form Fe_(2)Al_(5).At this time,the performance of the aluminum-clad steel wire composite material reaches the best,the microhardness(HV)at the bonding interface is 204,the conductivity of the sample is 53.23%IACS(international annealing copper standard),and the density is 4.36 g/cm^(3).

关 键 词：铝包钢线 连续浇铸复合铸造法 硬度 电导率 

分 类 号：TF4[冶金工程—钢铁冶金] TG24[金属学及工艺—铸造]