Modellization of cyclic extrusion compression using elastoplastic model

In this work the development of texture and microstructure in the range of very large deformations exerted by the CEC process were studied. The elasto plastic models were used to predict the behaviour of aluminium subjected to the reversible tensile and compressive deformations. The theoretical pole figures well fit to the experimental ones. During the CEC process the textu re changes periodically leading to relatively low sample anisotropy for lar ge degree of deformation. The evolution of microstructure was not reversibl e, however, some parameters (for example hardening) reached the saturation after a few cycles.