Influence of finishing by burnishing on surface characteristics

The aim of this study was to analyze the evolution of residual stresses, microhardness, and roughness in relation to the finishing process. The x-ray diffraction (XRD) technique was used to determine the residual stresses, which were measured from the surface to the bottom of the machined workpiece. Processes that were studied included turning, grinding, and burnishing. Burnishing was done on a surface that was initially turned, or turned and then ground. A duplex stainless steel was used in this study. This material belongs to a high-strength stainless steel family with high corrosion resistance properties. We noted that the burnishing process produces the best quality of the surface when compared with turning or grinding.