Evaluation study of mechanical properties of dissimilar materials through TIG welding process

Abstract

Abstract In the present work, Titanium grade 5 (Ti-6Al-4 V) and low carbon steel (A516) plates were joint through diffusion bonding using a titanium as interlayer at the temperatures range of 650 °C–700 °C for various diffusion timing of 1hr 5 min under 15KN load in vacuum to examine the strength of the welded materials at the joints. TIG welding was used to join the two different metals at three different temperature ranges. In this investigation, mechanical properties such as tensile strength, elongation, and hardness tests were carried out by using universal testing machine (UTM). Also corrosion resistance test conducted using the salt spray test to examine the corrosion resistance at the welded joints. Thus the result revealed that TIG welding is suitable for joining hard metals at maximum temperature and the welding bond strength is observed better at 700 °C.