Deformation banding and ferrite-type rolling textures

Abstract

A computer model for predicting rolling textures formed in bcc metals and alloys deforming by slip using the Taylor-Chin framework and including deformation banding is presented. The model is rate insensitive. Deformation banding in both the rolling and transverse planes were investigated and it is shown that the best results are obtained when grain subdivision in the rolling plane only is allowed. By modeling two kinds of deformation banding in the rolling plane, rotations of typical texture components along the γ fiber and the α fiber have been traced to demonstrate the development of individual texture components formed by deformation banding. The influence of latent hardening through a parameter, Lh, on the deformation banding process is included in the model, and it is shown that lower Lh produces peak-type textures, whereas higher values for Lh lead to more deformation banding as expected, and this strengthens the γ fiber.