Quantometer analysis of 6061-T6 Aluminum alloy sheets is reported in Table . To improve the structure, nanometer/micrometer particles of alumina (500 nm and 4 μm) are used as reinforcing substances. Aluminum specimens with dimensions of 6 × 50 × 120 𝑚𝑚 3 are prepared and placed on the milling machine bed. Also, to add the alumina powder, holes with a diameter of 2 mm are created at specific distances from the moving tape of the parts. It should be noted that the linear hole pattern is used to fill the powder on the surface of the workpiece. Using the linear pattern on Aluminum specimens is for better surface mixing and uniform distribution of additives during the process. The clamping kits, the linear pattern on the specimens, and the implemented tools are shown in Figure . The parameters of friction stir processing are listed in Table . One of the essential mechanical properties of the materials is the tensile strength, which determines the amount of stress tolerable by the part under tensile loads. In this study, tensile strength is considered as the response variable. Also, the corrosion of the stir zone of the processed samples is another critical parameter that needs to be investigated. The results of the tensile strength test can be used to extract the modulus of elasticity, final stress, fracture stress, percentage of elongation before fracture, toughness, and impact resistance. To investigate the tensile characteristics of the processed materials, a tensile strength test was performed on a small segment of the samples cut from the stir zone according to the ASTM-E8/E8M standard .