LAUSR

Abstract The subsurface zone induced by a dry sliding test performed on work-hardened iron has been studied using: positron annihilation spectroscopy, electron backscatter diffraction (EBSD), scanning electron microscopy (SEM) and crystallographic texture analysis. The total range of the subsurface zone generated as a result of the test is about 40 μm, however, in this zone, two visible layers were detected. Just below the worn surface at a depth of less than 15 μm a layer with significant refinement grains is located. The results suggest that the dynamic recrystallization process is taking place in this layer. Below a layer with elongated grains and low angle grain boundaries is visible. This layer adjoins to the parent region.