Effect of welding parameters on the tensileshear strength, hardness and microstructure properties in the electric resistance spot welding of ferritic, austenitic and galvanized stainless steel

In this study, the strength, hardness and microstructure of austenitic and ferritic stainless steel, which is used in many fields such as architectural, kitchen utensils, automotive industry, defense and aviation industries, and galvanized steel, which is widely used in many different industrial fields, are investigated experimentally. The current passing through the electrodes, the force that causes the electrons to touch the workpiece, and the welding time are the most important factors. The combination of these factors with each other and the amount of application determine the quality of the welding. The quality of the welding, directly affects the mechanical strength of the parts to be joined. It is aimed to determine the proper welding parameters by studying the strength, hardness and microstructure properties of the relevant welding parameters on austenitic, ferritic and galvanized steels. Keywords: Austenitic stainless steel, ferritic stainless steel, galvanized steel, electric resistance welding, welding current, welding time, tensile-shear strength, hardness, microstructure.