Deformation texture simulation in Al alloys: continuum mechanics and crystal plasticity aspects

Abstract

A brief summary on modeling the deformation textures by means of well-established crystal plasticity (CP) theories is presented in the current contribution. The simulations are carried out by combining Taylor-type homogenization approaches, dealing with the partitioning of macroscopic strain in a polycrystalline aggregate, and models based on principles of continuum mechanics (CM). The performance of the full constraints Taylor, advanced Lamel, viscoplastic self-consistent and Cluster V CP models, is discussed. The rolling first was approximated by plane strain compression, though it was shown that an improvement in texture simulation is reached by considering heterogeneities of deformation flow across the thickness of a rolled sheet. Results of simulations by means of geometric, flow-line and finite element models indicate that the deformation history can be captured with different degree of accuracy depending on the complexity of a given CM-based approximation. It was shown that the analytical flow-line approach accoupled with particular CP model is capable of providing texture prediction comparable to one simulated with the strain path obtained by means of finite element modeling.