DISSIMILAR METAL WELDING OF INCONEL 718 WITH TI6AL4V: A SIMULATION-BASED APPROACH USING CATIA

Abstract

Dissimilar metal welding, particularly the joining of Inconel 718 and Ti-6Al-4V alloys, presents significant challenges due to their disparate properties. This study proposes a simulation-based approach for Tungsten Inert Gas (TIG) welding of Inconel 718 with Ti6Al4V using the Computer-Aided Design (CAD) software CATIA. The objective is to investigate the feasibility of achieving high-quality weld joints with minimized defects and optimized process parameters. The simulation process commences with the development of a three-dimensional (3D) model of the welding setup in CATIA. The model accurately represents the geometry of the weld joint, encompassing the base materials. Subsequently, mechanical analysis is performed to evaluate the deformation, Von Mises, displacement and principal stress under the applied load of 100 N for Inconel 718 and Ti6Al4V. The experimental procedure provided valuable insights into the weldability and the formation of intermetallic compounds responsible for the quality of joints between Inconel 718 and Ti6Al4V. The results obtained from this study can contribute to the optimization of welding parameters and the development of reliable welding procedures for joining these high performance alloys in various industrial applications requiring excellent corrosion resistance, high-temperature strength, and mechanical integrity