Heterogeneous deformation in twinning-induced plasticity steel

The influence of deformation localization during tensile deformation on the development of crystallographic texture in twinning-induced plasticity (TWIP) steel is reported. Whereas Al-added TWIP steel deforms homogeneously before the critical strain of onset of serrations, plastic deformation in Al-free TWIP steel occurs by propagation of isolated Portevin–Le Chatelier bands from the early stage of plastic deformation. The crystallographic texture evolution of both steels is, however, very similar. Deformation leads to the development of a Cu-type texture characterized by the strengthening of the rotated Brass component rather than the pure Brass component.