Abstract
One of the most significant sectors of all industrialised economies today is the automotive sector. It offers several people at all economic levels the chance to find employment. In the automotive sector, resistance spot welding is the most used type of welding. The resistance spot weld quality has a significant impact on the structural integrity of a vehicle. Because to complex interactions between electrical, mechanical, thermal, and metallurgical processes, the process is both quick and effective while also being sophisticated. Much effort is always being put forth to produce lightweight materials with excellent strength-ductility combinations because of the growing demand for increased fuel efficiency, decreased CO2 emission, and superior crashworthiness. This paper reviews metallurgical and mechanical performance of resistance spot welds in terms of weld nugget size, load bearing capacity and failure mode, under quasi static loading conditions. It also reviews the effect of process parameters such as welding current, welding time, electrode force and mechanism on the mechanical performance of spot welds.
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