MODELING OF TEXTURE EVOLUTION FOR MATERIALS OF HEXAGONAL SYMMETRY .1.APPLICATION TO ZINC-ALLOYS

This work describes the texture and microstructure evolution during co ld rolling of zinc alloys. The choice of the Taylor model and its appl icability to the ZnCuTi alloy are being discussed. The use of this kin d of model in the case of ZnCuTi alloys permits to predict, with a goo d agreement, the texture evolution by cold rolling up to 80% reduction . The conditions of occurrence of various texture components are discu ssed. The authors compare their results with those published in the li terature and compare also their results with those obtained according to different models (Sachs, Taylor..). They show, in particular, that the hypotheses of the model have to be in accordance with the evolutio n of the microstructure on the one hand and that the critical stresses of the deformation systems have to be well known on the other hand.