Influence of Tool Pin Geometry on Friction Stir Welded Dissimilar Aluminium Alloys - (AA5083 & AA6061)

The present examination focuses on the evaluation of process parameters on mechanical properties and microstructure study of Friction stir welded (FSW) unlike Aluminum alloys. Their extent of use is in naval and marine applications. Dissimilar FSWed joints were fabricated by varying the rotation speeds, transverse speed and keeping tool geometry as taper with threaded pin profile. The welding parameters & tool probe geometry amusement play larger role in deciding the weld quality. While conducting FSW process, Al 5083 is positioned in advancing side and Al 6061on the retreating side. The experimental results have exposed that the sound defect free the joints obtained by varying the process parameters. From the achieved results, it is to be observed that eminent properties are acquired at a pivot rotational speed of 900rpm, and welding velocity at 40mm/min due to refinement of microstructure. The perceived outcomes were correlated with the microstructure and crack highlights.