Analisis Struktur Mikro Dan Kekuatan Pada Penyambungan Plat (Cu-Cu) (Cu-Cuzn) (Cu-Al) Menggunakan Metode Friction Stir Welding Single Side

The process of welding metal with welding techniques is widely applied in the transportation industry such as automotive, shipping, trains and aircraft. In the course of the welding joint undergoes some correction of refinement and this can be achieved with the rapid development of welding technology today. One type of welding process that is relatively new is friction stir welding (FSW). The aim of this research is to know the strength of the material welding joints between copper and copper, copper with brass and copper with aluminum testing done by Tensile test, vickers hardness test and micro photo test on welding result. Welding in this research using aluminum, copper and brass material, connection using butt joint, the parameter used is 1250 rpm rotational speed, fastening speed 12.5 mm / minute. The analysis is done by looking at the strength of the connection, the welding results compared with other welding. The results of this test shows the maximum tensile strength of copper welding with brass that is equal to 254.60 Mpa and a maximum strain of 11%. Violence testing in the zone zone all increased in value of violence compared to base metal and HAZ regions. Microstructure testing at the stir zone area of all the welding seen there is mixing of material and experience granular degradation due to the effect of stirring tool joint during welding process