DEVELOPMENT OF WIRE DRAWING TEXTURES IN Cu-Fe. THE INFLUENCE OF MACROSCOPIC AND MICROSCOPIC HETEROGENEITIES

R.E. Bolmaro1, A. Fourty1, J. W. Signorelli1 and H.-G. Brokmeier2

1 Instituto de Física Rosario - Fac. de Ciencias Exactas, Ingeniería y Agrimensura. Consejo Nacional de Investigaciones Científicas y Técnicas, Bv. 27 de febrero 210 bis, 2000, Rosario, Argentina. bolmaro@ifir.ifir.edu.ar

2 Institut für Werkstoffkunde und -technik der Technische Universität Clausthal. GKSS Forschungszentrum Geesthacht, Max Planck Str. Geb 03, 21502 Geesthacht, Germany

Abstract:

The current paper presents a comparison of the influence over texture development of different heterogeneity levels of deformation. A Visco Plastic Self-Consistent (VPSC) micromechanical model is coupled with a Finite Element Method (FEM) to simulate wire drawing texture development in a two-phase Cu-Fe material. VPSC models are capable to simulate grain-to-grain heterogeneity and FEM models can accomplish the task of simulating the macroscopic variation of velocity gradient due to geometrical constraints during wire drawing. Intra-grain heterogeneities are empirically built in the self consistent model by enforcing a common spin between closest neighbor grains. The results are contrasted and validated by neutron diffraction experimental textures. Different levels of heterogeneity are simulated and the results are assessed and compared against Taylor based simulations.