Effect of Eccentricity Pin Geometry on the Fabrication of Surface Composite (Al6061-T6 /Sic) by Friction Stir Processing

This research investigates the effect of three types of friction stir processing (FSP) tool with a pin eccentricity of 0, 0.5 and 1mm on the fabrication of AA6061-T6/SiC surface composites (SCs). The pin eccentricity induced severe plastic deformation in the nugget zone or composite region, which resulted in the enhanced material flow. FSP experiments were performed with a constant tool speed of 1000 rpm, traverse feed of 20 mm/min and the tilt angle of 3°. The experiments revealed that 0.5mm eccentric tool produced better surface composites with uniform particles distribution and mechanical properties