Effect of Al–Si Filler Rods on the Microstructure and Mechanical Properties of TIG-Welded Thick AA5083-F Alloys

Abstract

The marine aluminum alloy 12 mm thick plates are joined using Tungsten Inert Gas welding technique. The mechanical properties and microstructural features of Tungsten Inert Gas welded joints of the Aluminum Alloy 5083-F with two Al–Si filler rods are investigated. Weldments processed by Al–Si filler rods, such as ER4043 and ER4047 are mechanically softer than the base material AA5083 in F condition. The welded joint tensile strength of ER4043 filler rod-welded joints is 33% higher than that of the ER4047 filler rod-welded joints tensile strength.