Paper Contents
Abstract
Aluminium combinations are notable for its applications in manufacturing industries. TIG welding is the widely used technique for the joining of both ferrous and non-ferrous metals. The present work focuses the study of Micro-structural and mechanical properties of the welded joints of 6 mm thick Aluminium plate of grade AA-6061 andAA-6063, using Tungsten Inert Gas welding by using Filler wire of grade AA-4043 with welding current as varying parameter and also to investigate the influence of the process parameters. A single V-butt joint configuration (bevel angle 60 and root gap 1.5 mm) of plates was used for welding.The accuracy and quality of welded joints largely depends upon type of power supply, welding speed, type of inert gas used for shielding and also the gas flow rate. Welding speed and current were the most influencing process parameter for controlling the hardness of HAZ and tensile strength of the welds. Results have shown that optimum weld current out of the three weld currents used (75A, 85A and 95A) is 75A.Better microstructure and mechanical properties were found in the welded joints for the weld current 75A. KEYWORDS:AA6061, AA6063, Aluminum alloys, TIG welding, Mechanical properties, Microstructure.
Copyright
Copyright © 2023 J. Jeya Balamurugan . This is an open access article distributed under the Creative Commons Attribution License.
