Análise do desempenho mecânico da soldagem FSSW em liga de alumínio 6063-T5

Abstract

The industrial market has focused on sustainability, Therefore, research on materials technology has increased in this area. Reducing the weight of products has been a trend, using light alloys and reducing costs. For this reason, Friction Stir Spot Welding on aluminum alloys is a cheaper and more efficient technique. The process is a point joining of overlapping joints in the solid state. As there is no fusion between the joined sheets, problems with fusion and solidification are avoided, as occurs in conventional welding processes. For this reason, the present work aims to evaluate the mechanical performance of AA6063-T5 aluminum lap joints welded by the FSSW process. The methodology used in the study was experimental research, where aluminum sheets were welded that underwent analysis through mechanical tests of axial force and temperature control, shear strength, microhardness and metallographic tests. The process parameters evaluated were rotational speed and dwell time with three levels each and a constant plunge rate. The results obtained indicated quality welded samples for the alloy and the equipment chosen in this work. The application of this process resulted in an improvement in the performance of the material's mechanical properties and showed the importance of the welding parameters analyzed.