Effect of SiO2 and TiO2 Flux on Metallurgical and Corrosion Properties of the Activated TIG Welded AA7004 Aluminum Alloy

Abstract

TIG welding is the most common method for producing high-quality aluminium alloy welds. Variants of Tig welding will increase productivity. Some variants of TIG welding are hot wire TIG welding, activated TIG welding, and pulse TIG welding. Activated Tig welding has its own variants, such as FB-TIG, FZ-TIG, etc. for aluminium, TIG welding with argon inert gas is the most suitable welding technique. In activated TIG welding, various fluxes are used for welding SiO₂, TiO₂, and CaF₂, and the mixing of acetone and methanol will increase the penetration in the weldment. In this paper, we discuss the various fluxes used in aluminium welding for different variants of Tig welding and also the effect of welding parameters on aluminium alloys. also, Experiment was performed on aluminium AA7004 alloy with the convention, A-TIG and FB-TIG welding process. For the ensuring of quality of weld hardness, Microstructure, EDS, SEM and Potentiodynamic testing was performed.