Texture and Lattice Deformation Pole Figures of Machined Surfaces
A short review of the current knowledge about machining induced texture states is given. The applied methods for the determination of texture and residual stress states are outlined. The surface textures and residual stress states present after grinding, milling and shot peening of initially residual stress- and texture-free as well as of 78% cold-rolled plain carbon steel are presented. Texture and residual stress states are represented by texture and lattice deformation pole figures. In the initially texture-free specimens, machining by grinding and milling gives rise to weak, but typical asymmetric textures. The appertaining principal residual stress systems do not coincide with the specimen system. Shot peening causes a centrosymmetric texture and residal stress state. The cold-rolling texture and residual stress state is significantly changed due to machining. Milling and grinding introduce an asymmetry into the symmetric rolling texture and residual stress state. After shot peening of cold-rolled specimens, a centrosymmetric residual stress state is found.