Investigations of Microstructure and Mechanical Properties of Lap Jointed Dissimilar Metals by Friction Stir Spot Welding Process

The joining of different materials is required for industrial application to utilize the hydride structures with attractive advantages such as superior strength weight ratio, low cost, high tensile and less component. Specifically, Al-Cu composite material widely used in foil conductors a transformer, electrical connectors, windings capacitors tubes heat exchangers. However, or spot welding Al parts Cu are significant challenge owing variation mechanical properties chemical compositions materials. In this present research work, friction stir welded process (FSSWP) carried out join Further, microstructure specimens (FSSW) studied at tool rotational speeds likely from 1000rpm 1500rpm. microstructural study using scanning electron microscope images interface overall region. both single double spot-welded analyzed universal test machine. output states that optimal speed 1500rpm specimens. Moreover, specimen exhibits more crack-free surface than specimen. has 6.8% higher Based on study, it concluded can be applications replace gives added those components.