Texture Development During Wire Drawing

Abstract

The development of deformation induced anisotropy in wire drawing operations is modeled with a finite element formulation that incorporates a polycrystalline plasticity model to describe the metal anisotropy. An aggregrate of grains is assumed to underly every material point on the continuum scale. The averaged response of an aggregate defines the macroscopic behavior of the corresponding material point, which is used in the finite element formulation to solve the boundary value problem corresponding to wire drawing. Macroscopic deformations imposed on the aggregate cause changes in the relative orientation of grains, thereby producing texture and associated anisotropy. Textures predicted from the drawing of aluminum wire are presented with special attention to the variations in texture from redundant deformations.