Effect of MIG Welding Speed Butt-Joint on Physical and Mechanical Properties of Materials AA 5083

Abstract

Aluminium is a non-ferrous metal known as a light metal that has good corrosion resistance properties. Aluminium materials can be classified according to their alloying elements. Aluminium alloys are widely applied in the manufacture of marine structure, especially 5083 series aluminium. Parameters in a welding process, especially aluminium, are very important things to consider. The high and low welding speed is a parameter that can affect the mechanical and physical properties of the welded material. The purpose of this study was to determine the mechanical and physical properties of the 5083-aluminium connection. The welding process was carried out on the Butt-Joint connection using 5083 aluminium alloy materials, with plate dimensions of 300 mm × 150 mm × 3 mm. The speed variations used were 10 mm/s, 12 mm/s, and 14 mm/s with a voltage of 20 V, a filler diameter of 0.8 mm, a protective gas flow of 25 L/minute and a torch distance of 5 mm. The results showed that the welding speed variation of 10 mm/s had the largest distortion with a value of 6.89 mm and the highest tensile strength of 194.83 MPa. There were incomplete penetration and linear porosity defects in every variation of welding speed. Micro-porosity observations showed an increase in the welding speed results in more porosity.