The evolution with strain of the stored energy in different texture components of cold-rolled IF steel revealed by high resolution X-ray diffraction

摘要: During the deformation of low carbon steel by cold-rolling, dislocations are created and stored in grains depending on local crystallographic orientation, deformation, gradient. Orientation dependent dislocation densities have been estimated from broadening X-ray diffraction lines measured a synchrotron beamline. Different cold-rolling levels (from 30% to 95% thickness reduction) considered. It is shown that present measurements consistent with hypothesis sole consideration screw for analysis data. The presented evolutions show density first increases within α fiber (={hkl} ) then γ (={111} ). A comparison EBSD done confirms storage during process orientation this dependence correlated level. If we assume acts as driving force recrystallization, these observations can explain fact recrystallization mechanisms generally different after moderate or large strains.