Investigation on microstructure and mechanical properties of friction stir welded lap joints between commercially pure copper and St37-2 mild steel

The copper generation industries in the power-generation industries, the copper-steel combinations have often been widely used due to their high electrical conductivity and stiffness. However, the joining of copper to steel has become a challenging task facing modern manufactures. The welding of copper to carbon steel belongs to joining of dissimilar metals. In the present study, lap joining of commercially pure copper to St37-2 mild steel by FSW process was investigated.