The new unconventional method of cyclic extrusion compression(CEC) has been used for aluminum and AlMg~5 samples deformed in the range of range of true strains psi-0.2-30. The true strains psi-0.4 and psi-0.9 have been exerted in a single cycle. The CEC method is the combinationof extrusion of extrusion and compression processes. The greatest advantage of the method is its ability to deform samples to arbitrarily large plastic strains without a sample shape change. This is extremely useful during investigations of the evolution of the material structure, which can be examined in a wide range of platic deformations with simultaneous preservation of comparable investigation coditions. The advantageous conditions of plastic deformation also offer a great possibility for practically applying the CEC method in materials engineering, in particular for the preliminary working of billets; the plastic working for meatals, alloys, and hard deformatble alloys; the consolidation and sintering-free fabrication of powder materials; the deforamtion of composite materials; and the production of materials of fine-gained structure (nanomaterials).
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