Effect of tool rotational speed on microstructure and mechanical properties of AA6061/SiC surface composites using friction stir processing

Abstract

An investigation was conducted into how the tool rotation speed affected the microstructure and mechanical properties of friction stir processed samples based on AA6061-T6/SiC surface composites. The tool rotated between 700 and 1500 rpm with steps 400 rpm, while the other process variables were kept constant. Visual inspection reveals a sound and defect-free weld surface. The microstructure and particle dispersion of composite surface based on synthesis of aluminium alloys were revealed using an optical microscope. The findings demonstrate that rotational speed has a substantial impact on the uniform dispersion of SiC particles, which were observed at 1100 rpm found that refined and uniform distribution of particles as compared other rotational speeds. At tool rotational speed (TRS) of 1100 rpm, the friction stir processed specimen's microhardness and tensile strength, which seem to be 128 HV and 305 MPa, respectively. © 2022 Elsevier Inc. All rights reserved.