Friction Stir Welding (FSW) was invented by Wayne Thomas at TWI (The Welding Institute), and the first patent applications were filed in the UK in December 1991 for butt and lap welding of metals and Plastics. FSW is a solid state welding process and joining similar or dissimilar metals in which the relative motion between the tool and the work piece produces heat which makes the material of two edges being joined by plastic atomic diffusion. In this work newly design and developed tool pin profile is considered to study the effect of this tool geometry on mechanical properties of friction stir weldments of AA 2014-T6 aluminium alloy using Taguchi’s one parameter at-one-time approach. The various process parameters was considered such as tool rotational speed (TRS), weld speed (WS) and tilt angle for friction stir weldments of AA 2014-T6 aluminium. From the result it is observed that the parameters i.e. TRS (710 rpm), WS (49 mm/min), Tilt Angle (2˚) gives highest tensile strength.

Keywords: Friction Stir Welding, Tool Rotation Speed, Weld Speed, Tilt Angle.