A model for rolling deformation with grain subdivision. Part II: The subsequent stage

Part I of the present work dealt with the initial stage of plastic deformat ion with grain subdivision into two band families. It covered the situation with different average strains in the individual grains (the non-Taylor ca se) and the situation with identical average strains in the individual grai ns (the Taylor case). For the latter situation part I included solutions wi th 5 plus 3 and with 4 plus 4 active slip systems in the two band families, respectively. In part II we deal with the subsequent stage of plastic defo rmation (finite strains) for the Taylor case with four active slip systems in each band family. In the subsequent stage the cooperation between the tw o band families leads to an energetic advantage for grain subdivision, and it leads to a simulated texture with decreased sharpness in accordance with experimental observations. Finally, the physics behind grain subdivision a re discussed on the basis of the results in Parts I and II and various gene ral considerations. (C) 2001 Elsevier Science Ltd. All rights reserved.