Simulation of the rolling and shear texture of brass by the Taylor theory adapted for mechanical twinning

Abstract

The Taylor model for the prediction of deformation textures, which was originally developed for F.c.c. metals deforming by {111}〈110〉 multiple slip, has been adapted to take also {111}〈112〉 mechanical twinning into account. The method proposed by Chin, Hosford and Mendorf was used for that purpose. A most important parameter in this context is α, the ratio between the CRSS in twinning and in slip. The rolling and the shear textures of F.c.c. metals with high and low stacking fault energies have been simulated by varying the value of α. Only four different textures were obtained in each of the two cases: the copper-type texture, a transition texture, the brass-type texture and a previously unknown texture, obtained when only twinning systems were activated. The results have been compared with experimental results, which allowed evaluation of the model.