The evolution of the microstructure and texture of a TWIP steel during cold rolling was studied. With increasing strain, various deformation mechanisms became active. Transmission electron microscopic observations revealed the occurrence of deformation twinning at strains below 0.1. As the strain was increased, the volume fraction of twins increased. At higher strain levels, inhomogeneous deformation mechanisms such as shear-band formation became active. The evolution of the microstructure was reflected by the texture, and the brass orientation, {110}<112>, predominated at every strain level. Its intensity increased as the strain increased, while additional textural components developed at different strain levels. These were the E-orientation {111}<110>, the F-orientation {111}<112> and the S-orientation {123}<634>. As compared with these orientations, the Cu orientation intensity remained rather low.

Cold Rolling Behaviour of an Austenitic Fe–30Mn–3Al–3Si TWIP-Steel - the Importance of Deformation Twinning. S.Vercammen, B.Blanpain, B.C.De Cooman, P.Wollants: Acta Materialia, 2004, 52[7], 2005-12