Evaluation of Mechanical Properties in Friction Stir Welding of Aluminium AA6061 with Various Tool Pin Profiles at Different Process Parameters

The friction stir welding (FSW) process is used in various industries, which includes railways, marine, aerospace, automotive to join copper, aluminum, and magnesium alloys. It is used to combine two similar or dissimilar plates. Different tool pin profiles such as triangular tool, square tool, taper threaded cylindrical tools and cylindrical grooves tool are used at different process parameters and friction stir welding is performed on Aluminium AA6061 plates. Testing of the weldments is done to find tensile, yield strengths, elongation, hardness, and energy absorbed by the weldments. The impact of different tool pin profiles while welding with different process parameters on the mechanical properties of the weldments are evaluated. Destructive and non-destructive tests are conducted on the weldments and based on results it was observed that square tool performed more efficiently followed by cylindrical grooves tool.