EFFECTS IN THE TEXTURE AND MICROSTRUCTURE IN SOME METALS OF CUBIC AND HEKSAGONAL SYMMETRY CAUSED BY THE CHANGE OF THE ROLLING DIRECTION

摘要

In the present paper texture and microstructure effects which are released after the change of the deformation path in metals are displayed. The effects are characterized by experimental results selected from earlier studies for some metals of cubic and hexagonal symmetry. The observed effects result directly from the instability of the texture and microstructure with respect to the modified geometry of deformation. A consequence of the change of the geometry of deformation is at the same time a reduction of the global strain hardening which causes that the observed changes are rapid and dynamic. The presented results which were obtained in the rolling process of copper, copper alloy and magnesium alloy show strong effects of destabilization after the change of the rolling direction and after a relatively small amount additional deformation. The performed investigations, were inspired by works published in the 1990s mainly by A.Korbel.