EXPERIMENTAL INVESTIGATION OF TENSILE STRENGTH OF AA 6082 USING TIG WELDING AT DIFFERENT PROCESS PARAMETERS

Welding has wide applications in industry, so it is necessary to optimize the process parameters in order to achieve better results. In this study, effects of various welding parameters in Tungsten Inert Gas welding (TIG) of AA 6082 on tensile strength are investigated. The process parameters considered are current, filler material and shielding gas flow rate. Current is varied from 80 Amp to 120 Amp with increment of 20 Amp. A double side V butt weld joint is made with two different filler material AA 4043 and AA 4047. Argon is used as shielding gas with varied flow rate from 8 lpm to 12 lpm. The results show an average increase of 4.5% in tensile strength when current increases from 80 Amp to 120 Amp. Better results are observed with AA 4043 as compared to AA 4047.