MEASUREMENT AND PREDICTION OF TEXTURE DEVELOPMENT DURING A ROLLING SEQUENCE OF ZIRCALOY-4 TUBES

In this work we compare measurements and numerical predictions of text ure development along a forming sequence of Zircaloy-4 tubes. Simulati ons were carried out using a viscoplastic self-consistent (VPSC) formu lation in order to account for the effect of the high intrinsic plasti c anisotropy of hcp crystals. Using a set of active slip and twinning systems with associated critical resolved shear stresses - selected in agreement with previously reported experimental evidence - we were ab le to reproduce the main features of the rolling textures along the co mplete sequence. Finally, we discuss the effect of different initial p arameters (Q-factor, the area-reduction factor, initial texture) on th e final texture of the tube.