Effects of Friction Stir Welding Tool Plunge Depth on Microstructure and Texture Evolution of AA1100 to A441 AISI Joint

Abstract: the aim of this article is the study of tool plunge depth (tpd) effects on mechanical properties of friction stir welding of aa1100 aluminium alloy to a441 aisi steel. for this purpose, the 0.1, 0.2, 0.4, and 0.6 mm tpds are selected and other welding parameters are kept constant. the results show that the frictional heat increases and stir zone grain size decreases with increasing tpd at both base metals. at higher tpd, the material press out from shoulder and base metals interface. the highest tensile strength is allocated to the joint which were welded with 0.2 mm plunge depth. this joint has appropriate joint efficacy, material flow and microhardness in comparison to other joints.