An experimental analysis and process parameter optimization on AA7075 T6-AA6061 T6 alloy using friction stir welding

Abstract

Friction stir welding is a non consumable concrete condition welding course for joining aluminum alloys and is engaged in aerospace, rail, automotive and marine industries. The weld quality of this type depends upon the process parameters such as the rotational speed of the tool, the welding speed and the axial force. In this paper, friction stir welding was used to weld two dissimilar aluminium alloys AA7075 T6 & AA6061 T6 by varying the input parameter namely the rotational speed and maintaining the welding speed, load as constants. Morphological characterization is done using Scanning Electron Microscope while the mechanical properties of the welded specimens are characterized by conducting smooth tensile and hardness test and the values are reported.