In this study, aluminum 2014 had been cladded on substrates of the same alloy by FSP process. In order to reach this, tools that has conical threaded pin was used. Suitable connection had been obtaining by examining tools with different tool shoulder (15, 20,25mm) and flawless connection was obtained by using tool shoulder 25mm. Friction stir processing was carried out by 800, 1000, 1250 rpm tool rotation speed and 20, 25, 31.5 mm/min tool traverse speed. Observation microstructure was cried out by Scanning electron microscope (SEM) while EDS (Energy-dispersive X-ray spectroscopy) in order to determining phase. By studying all specimen and corrosion behavior comparison, nugget zone area in all specimen show better corrosion resistance compare to base metal. By studying changing process parameters, mechanical and corrosion properties was investigated; and in all specimen, best corrosion resistance was by 1000 rpm tool rotation speed and 25 mm/min tool traverse speed. With increasing tool rotation speed, decreasing tool traverse speed and increasing size of tool shoulder, corrosion potential was increased due to changing the size and amount of precipitate. Also by studying heat treatment cycle after FSP, It was found that corrosion resistance improved compare to initial state, while reduces compare to disturbance area. Tensile test specimens show, strength of FSP specimens was decreased compare to Aged-hardened specimen (T6). By precipitation hardening process (T6) on cladded specimen, strength was increasing. Keywords: Cladding, aluminum 2014, FSP, pitting corrosion, mechanical properties, heat treatment
