Abstract
Aluminum alloys are widely used in shipbuilding, it is a material with good mechanical strength, high corrosion resistance and good conformation. In this study we used the filler metal 5183 aluminum alloy, groove angle 80°, root opening 0,5mm, stick-out 12 a 14mm, voltage 23V, torch 99,99%Ar, transfer mode Pulsed, current 220A, wire speed 30cm/min, gas flow 25l/min. The aim of this study was to research the mechanical strength in a welded joint naval 5052 aluminum alloy welded by Metal Inert Gas-MIG process using a mapping microhardness and software images. They were also carried out the tensile test, chemical analysis of the studied alloy and optical microscopy. The results of microhardness showed that the weld pool showed lower values. Optical microscopy showed that the weld pool had bubbles and the tensile test was presented fracture in the welded joint.
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