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In this works, specimens of silicon carbide nanoparticles reinforced aluminum composite were welded using Friction Stir Welding (FSW) technique. The principle aim of this study is to exam the effect of using this welding technique on the mechanical properties and the microstructure of this material. The present nanocomposite has been fabricated by using Ultrasonic assisted Stir Casting with a weight ratio 1 wt.% of SiC nanoparticles. A vertical milling machine has been adapted to be used in FSW processes. The frictional heat causes the materials to soften quickly, without reaching melting state, and allows the pin to traverse along the welding joint. The working parameters, i.e., rotational speed and tool penetration were taken as constants with two transverse speeds. The results show that FSW technique permits joining, with a significant success, the present nanocomposites. The mechanical properties and microstructure characteristics of the welded joint were experimentally evaluated and discussed.

Mechanical and Microstructure Properties of Friction Stir Welding Joints of Aluminum Reinforced with Silicon Carbide Nanoparticle