Abstract
Welding is one of the best and quick process to join metals. In modern times, we concern more about environmental hazards due to hazardous gases liberated during conventional welding processes. Fiction Stir welding is a simple process in which a solid metal joint is produced by the heat of friction. In a similar technique, we can make spot welds of similar or dissimilar metallic joints by using Friction Stir Spot Welding. Since there is an absence of any liberation of poisonous gases, this method is safe to the environment and user. In this study, we made a dissimilar lap joint of Copper and Aluminium strips using an H13 steel tool. The pin profile of the tool is based on the thickness of the plate/weld. Weld based process parameters such as tool rotational speed, Dwell time and plunge depth. A lap joint with a desirable overlapping length between friction weld spots is compared and analyzed for mechanical bonding strength for both single and double joints. The results show a considerable increase in tensile strength for double-jointed specimen compared to a single-joint.
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