Solid-state surface alloying of ZK60 Mg alloy with tin using friction stir processing

The present study aims to alloy the surface of ZK60 Mg alloy with Sn using friction stir processing (FSP). Experiments were conducted with the combination of higher and lower values of tool rotational speed and feed rate to evaluate the best combination of parameters for the alloy formation. The surface alloy has been successfully formed with improved hardness and corrosion properties in the combination of higher rotational speed of 2800 rpm and lower processing speed of 0.6 mm/min, which was attributed to the proper diffusion of Sn particles at the higher temperature produced in that combination of parameters.