<p>This study investigated the influence of processing parameters (tilt angle, traverse speed, and tool rotational speed) on the mechanical properties of AA5083/SiC composites fabricated using Friction Stir Processing. A Taguchi L9 orthogonal array was used to evaluate these parameters systematically. The study achieved a maximum microhardness of 94.8 HV and an ultimate tensile strength of 243 MPa. Analysis of Variance revealed that tool rotational speed had the most significant impact on the mechanical properties, followed by traverse speed and tilt angle. Optimal processing parameters for ultimate tensile strength and percentage elongation were identified as 900 rpm rotational speed, 30 mm/min traverse speed, and 2 degrees tilt angle. The maximum microhardness was obtained when the rotational speed was set to 900 rpm, the traverse speed to 45 mm/min, and the tilt angle to 2 degrees. While these parameters resulted in superior hardness due to grain refinement and dislocation pinning, a slight reduction in ultimate tensile strength was observed, likely attributed to particle agglomeration. These findings demonstrate the potential of friction stir processing for producing advanced AA5083/SiC composites, while emphasizing the importance of optimizing processing parameters to achieve desired mechanical properties and manufacturing efficiency.</p>