Review on mechanical and micro-structure properties of dissimilar joining of IS 2062 mild steel

Abstract

Most steel and aluminum alloys can be fused using the MIG and TIG welding methods, which provides higher mechanical properties and microstructure at optimized input settings. Several studies tested the effectiveness of MIG and TIG welding for connecting a wide range of alloys used in a variety of applications. MIG and TIG welding process parameters are critical aspects that determine weld quality. The goal of this review study is to synthesize the published literature on various MIG and TIG welding variants and to investigate the effect of various welding input process parameters on the microstructure, hardness, tensile strength, and impact strength of the weldment. The results showed that changing the value of any of the parameters had a considerable impact on the weld qualities. Welding current and welding speed are the two most essential welding input factors. Lowering the welding voltage and gas flow rate while increasing the welding speed and wire feed rate results in the highest ultimate tensile strength of the weldment. When compared to traditional weld methods, TIG produces better mechanical characteristics and lower residual stresses. To increase weld quality, there is a greater scope of research on the mechanism of residual stresses and their association with microstructure and mechanical properties.