Cu/不锈钢冷轧复合带材性能研究  

The Research on Properties of Cu/stainless Steel Composite Strip Bonded by Cold Rolled Method

作　　者：张静[1] 蔡凯洪[1] ZHANG Jing;CAI Kaihong(Beijing Beiye Functional Materials Corporation,Beijing,100192)

机构地区：[1]北京北冶功能材料有限公司材料研究所,北京100192

出　　处：《金属材料研究》2020年第2期31-34,共4页Research on Metallic Materials

摘　　要：本文采用冷轧复合方法成功制备了铜/不锈钢复合带材,利用金相显微镜、扫描电镜等手段分析了铜-钢复合带材界面成分及合金元素扩散,研究了热处理对铜-钢复合带材界面元素分布和晶粒度的影响,并研究了冷轧变形量对复合带材结合强度、室温力学性能及电阻率的影响。试验结果表明:复合带材扩散退火后,不锈钢中Fe、Ni、Cr原子及铜中Cu原子发生互扩散,形成了扩散层,退火后带材软化,其中不锈钢层的晶粒明显细小,铜层的晶粒明显长大,复合带材的屈服强度和抗拉强度降低。退火后复合带材经过不同变形量冷轧后,不同变形量下复合带材的结合强度良好,且随着冷轧变形量的增大,材料的强度、硬度升高,延伸率降低,冷轧变形量对复合带材的电阻率及扩散层厚度影响不大。In this paper,Copper-Stainless steel composite strip was successfully prepared by cold-rolled method.The metallurgical microscope and scanning electron microscopy were used to analyze the interface composition and element diffusion of Copper-Stainless steel composite strip.The influence of heat-treatment on the interface element distribution and grain size of the composite strip was studied,and the effect of cold rolling deformation on the bond strength,room temperature mechanical properties and resistivity of the composite strip were studied.The results show that after diffusion annealing,the Fe,Ni,Cr atoms in the stainless steel layer and Cu atoms in the copper layer interdifflised to each other and form a diffusion layer.After annealing,the strip was softened,and the grains of stainless steel layer had significantly refined and the grains of copper layer grow up obviously,and the yield strength and tensile strength of the composite strip decrease.The influences of different deformation amounts on the properties of composite strip shows that,the bonding strength is very good under different deformation amounts,and as the amount of cold rolling deformation increases,the strength and hardness of the material increase,the elongation decreases.The cold rolling deformation has little effect on the resistivity and the thickness of the diffusion layer of the composite strip.

关 键 词：Cu/不锈钢复合带材 冷轧复合 热处理 冷乳变形量 组织和性能 

分 类 号：TG1[金属学及工艺—金属学]