Optimisation process parameters for Multipass GTAW dissimilar materials of SS316L to INCONEL625

Abstract

This study aims to learn how welds' bead width and tensile strength have changed throughout time. The research welded the multipass dissimilar of nickel-based superalloy Inconel 625 and stainless steel 316L using CCGTAW and ERNiCrMo-3. This experimental cycle made use of the L9 orthogonal array. Analysis of Variance (ANOVA) is used to zero in on and identify the most critical variables. Weld quality is evaluated throughout production using a non-destructive method. Weld quality and tensile strength were tested in Universal testing Machine X-Ray Radiography. Welding current and root gap were shown to be significant factors.