WORKING REGIMES FOR FRICTION STIR PROCESSING OF ALUMINIUM ALLOY A6061

Friction Stir Processing (FSP) is a method for solid-state processing, in which rotating tool moved onto the material surface to modify microstructure and thus obtain improved properties of surface. We study effects FSP on aluminium alloy A6061-T651 using made at Institute Metal Science, Equipment, Technologies with Centre Hydro- Aerodynamics (IMSETCHA) Bulgarian Academy Sciences. The has threaded pin three flutes concave shoulder. Optimal process parameters should always be chosen treatment new materials when instrument used order achieve target processed zone. appropriate properties, like strength, hardness, corrosion resistance, etc. require that are correctly configured. most influential friction stir processing direction rotation tool, speed, traverse speed processing. In this paper, we investigate zone total 16 regimes: 4 speeds (900, 1100, 1300, 1500 rpm) (15, 30, 45, 60 mm/min) counterclockwise rotation, comparing results previous clockwise rotation. Metallographic inquiry, hardness tribological tests estimate stirred quality.