Abstract
AbstractWelding dissimilar materials of different thicknesses always presents new problems in the process of gas metal arc welding (GMAW), when the thickness of the plate is less than 1 mm. Because of its low heat input, cold metal transfer (CMT) process is used to overcome these difficulties, which enhance the mechanical properties of the dissimilar welded joint. Thin sheets require low heat input for welding which can be possibly achieved by reducing the current and voltage or by increasing the welding speed. The aim of this study is to experimentally examine the mechanical properties of the dissimilar welded joints AISI 304L and AISI 202 using GMAW and CMT with AISI 316L filler wire. CMT prevents thin sheets from burning compared to GMAW. Therefore, the use of CMT greatly increases the tensile strength and the effects of microhardness. Residual stress of CMT samples is less as compared to GMAW and more compressive in nature at the weld bead, which helps to avoid crack nucleation.KeywordsCMTGMAWDissimilar materialsAustenitic stainless steelMechanical properties
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