Abstract
In this study, friction stir processing (FSP) is used for improvement of 1050 Al surface with Fe powder (100 μm) as reinforcement. The surface layer composites of 1050 Al/Fe powder were produced in different conditions of FSP. Results of SEM and EDS technique indicated that FSP enhances the production and bonding of intermetallic products. Moreover, mechanical test results also demonstrated that FSP increased the microhardness, tensile strength and the wear resistance of specimens as a result of surface composite and fine-grained structure on the surface of 1050Al alloy. The influence of rotational speeds on wear resistance was studied in terms of friction coefficients and weight losses. SEM micrographs of the worn surfaces were also studied to evaluate the wear mechanisms. Increasing the rotational speed to 1600 rpm was caused increasing of the hardness and wear resistance, simultaneously. Adhesive wear mechanism was decreased on the worn surface of F2-1600 samples due to uniform distribution of reinforcement particles during FSP. General investigations showed that the specimens in 1600 rpm condition have acceptable surface layer composite duo to better wear resistant and mechanical properties.
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