Experimental Study on the Effect of Welding Parameters and Tool Pin Profiles on Mechanical Properties of the FSW Joints

摘要

To optimize the tool geometry (Pin profile) and process parameters for the FSW process. In the present investigation, an attempt has been made to understand the effect of rotatio nal speed, welding speed and there different pin profiles on the nugget zone formation in AA 6063-T4 aluminum alloy. Three different tool pin profiles (tapered cylindrical, tapered square and square) have been used to fabricate the joints at the different welding conditions and rotational speed. Tensile properties of the joints have been evaluated and correlated with the nugget zone formation. From this investigation it is found that the tapered cylindrical pin profile tool gives maximum strength as compared to other joints. Also the tensile tests are carried out to study the mechanical properties of the FSW joint