Investigation the effect of welding parameters on mechanical properties of AISI 316L by Metal Inert Gas (MIG)

Abstract

Abstract The purpose of this research is to study the behavior of AISI 316L steel during the Metal Inert Gas (MIG) welding process. Three welding parameters are adjusted at three levels of voltage, wire feed, and shielding gas combination (6V, 8V, 10V), (3, 3.5, 4), and (G4, G5, G6). The welding properties are investigated by tensile test strength and Charpy impact test. Ordering parameters are performed based on Taguchi's orthogonal array (L9). The data was analyzed using an analysis of variance (ANOVA) and signal-to-noise (S/N) to determine the optimal welding parameter sets. According to the results of this study, the most influential welding parameter is the gas combination on tensile strength; followed by voltage, wire feed, and gas combination (10V, 3.5, G4). The most influential parameter on maximum elongation is shielding gas. The welding parameter sets the voltage, wire feed, and gas combination (10V, 3.5, G4). The voltage has the most influential parameter on toughness. The welding parameter sets the voltage, wire feed, and gas combination (8V, 3.5, G5). A quaternary shielding gas is used in this study, which gives new insights into the mechanical properties of AISI 316L stainless steel and selects an appropriate shielding gas combination. The results assist engineers and technicians in making more effective welding parameter selections.