To investigate the effect of process parameters on the dissimilar welded joint of AA7075 and Cu

The friction stir welding (FSW) is a viable welding process for joining the two dissimilar materials owing to its solid-state nature. The process parameters are very crucial in determining if the FSW process is effective. In the present manuscript aims to investigate the effect of process parameters such as rotational speed (RS), where other parameters were kept constant on mechanical characteristics for the dissimilar welded joint (DWJ) of aluminum AA7075 grade with the pure Cu grade. The RS varies at different level i.e., 900, 1200, 1400 RPM. The findings indicate that changes in RS have a considerable impact on mechanical strength, and 1200 RPM was shown to be the ideal RS number for the maximum mechanical strength.