Abstract
Abstract Dissimilar TIG welding with a constant continuous current was performed on Non-heat treatable Al-Mg alloy plates with ER5356 Filler. These alloys are commonly utilized in the maritime, car, aviation, and chemical processing sectors for structural applications. The creation of porosities, cracking during solidifications, and coarsening of grains in Al-Mg alloys in fabricated TIG weld joints are all prevalent flaws caused by welding heat input supplied by the welding current provided. The Current was regulated from 150A- 180A while maintain a constant travel speed, resulting in a wide range of heat input. To observe the heat input’s force response to the mechanical properties of the joints, tensile tests and Micro Vickers hardness were performed. According to the findings, all of the instances had inferior mechanical properties than the basic alloy. It was observed that employing 170A gave the best mechanical attributes by removing welding faults and resulting in only a 13.5 percent reduction in strength.. At the fusion zone, the grains of specimens manufactured with 170A current are fine. The weld hardness is greatest for specimens fabricated with 170A current (72HV), and it is lowest for specimens fabricated with 150A current weld region (65HV). Microstructure examining at the broken surfaces of tensile specimens, using optical and scanning electron microscopes confirms the experimental findings.
Published Version
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