摘要
为了对铝合金和镀锌钢板进行优质高效焊接,采用Fronius冷金属过渡焊接机对锻铝6061和SPCC镀锌钢板进行了熔钎焊实验。焊接实验结果表明可以采用专家系统提供的参数进行焊接获得成型良好的接头;组织分析表明接头界面可以分为边缘富锌区、铝熔化区和铝钢界面反应层三个反应区。能谱分析结果表明边缘富锌区主要组成元素是锌和铝,铝钢之间的反应层主要是Fe2Al5反应相;接头上的缺陷主要有气孔、冷隔和低熔共晶缩孔。力学性能测试结果表明:铝、钢熔钎焊接头强度达到80MPa;Fe2Al5反应相平均硬度HV410,镀锌钢母材的平均显微硬度HV130,铝熔化区的平均显微硬度HV55。
For joining aluminium and galvanized steel sheet with high efficiency and quality,the 6061 aluminium sheet and SPCC galvanized steel sheet were welding-brazed using Fronius cold metal transfer（CMT） equipment.Results show that the sample can be well welded using the proposed parameters of expert system;cross-section of the joint can be divided into three zones： the Zn-rich zone,the aluminium melted zone and the reaction layer between aluminium and steel;EDS results show that the Zn-rich zone is mainly composed of Zn and Al,and the reaction phase in the reaction layer between aluminium and steel is Fe2Al5.There are flaws in the joint,such as blow holes,cold laps and eutectic shrinkage cavities.Tensile tests show the average joint strength value was up to 80MPa;hardness tests show the average hardness of the Fe2Al5 layer,the galvanized steel and the melted aluminium are HV410,HV130 and HV55,respectively.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2010年第10期82-85,共4页
Journal of Materials Engineering
基金
江西省自然科学基金资助项目(2008GQC0013)
江西省教育厅科技项目(GJJ10033)
关键词
铝合金
镀锌钢
熔钎焊
组织
力学性能
aluminium alloy
galvanized steel
welding-brazing
microstructure
mechanical property
