Investigation on joint properties of AA5083 aluminium alloy welded using A-TIG process

• Main Authors: Ramana, M. Venkata, Krishna, M., Kumar, B. V. R. Ravi, Kumar, Edara Pavan, Dilip, Yarragunta, Teja, Vasireddy Nandu Sai
• Format: Conference Proceeding
• Language: English
• Subjects: Aerospace industry; Alloys; Aluminum base alloys; Fluxes; Gas flow; Grain structure; Heat affected zone; Impact strength; Mechanical properties; Metallurgical analysis; Penetration depth; Process parameters; Silicon dioxide; Titanium; Titanium dioxide; Weight reduction; Welded joints; Welding fluxes; Welding parameters; Weldments; Workpieces
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0161200

Aluminium alloys are more widely used in the automotive and aerospace industries. Aluminium alloys have good weldability characteristics and light in weight. The depth of penetration is the main factor to improve the weld joint efficiency. This research work aimed to study the weld characteristics and depth of penetration at various welding process parameters like voltage, current, and gas flow rate. Activated Flux TIG (A-TIG) welding process is carried out on AA 5083 by applying different activating fluxes. The silicon dioxide and titanium dioxide fluxes are applied as activating fluxes on the workpiece to study the metallurgical and mechanical properties of the weld joints. The impact strength and hardness of the weldments are measured. It is found that ATIG welding of Aluminium alloy with SiO2 flux has more depth of penetration than the TiO2 flux and without flux. The grain structure over the heat-affected zone (HAZ) and the welding zone is observed. The fine grain structure is observed with SiO2 flux which leads to an increase in strength of the weldments.