The texture and microstructure evolution of a two-phase austenitic-ferritic steel after hot rolling and then during cold rolling (reduction amounts: 20, 40, 60 and 80%) is investigated at several scales (TEM, SEM or FEGSEM/EBSD and neutron diffraction). For each sample, the dislocation structure, the deformation inhomogeneities and the grain crystallographic orientations are characterised.