from the conferences organized by TANGER Ltd. provisional website
Over the last few years, the great attention was paid to materials with grain size of diameter smaller than 1 µm. These materials were classified as Ultra-Fine Grained (UFG) materials with diameter of grains of the order of 100 to 1000 nm and nano-materials (NC) with mean diameters of grains smaller than 50 nm. This research concerned to the production of UFG materials, using Severe Plastic Deformation (SPD) process. One of the forming methods using the SPD process is the DRECE method. This method was used to achieve the UFG structure in brass strip sheet. In the present paper, the brass CuZn37 strip sheets were processed by severe plastic deformation by DRECE method. The mechanical properties and structure achieved in individual passes by the device at room temperature were analyzed. Deformation route “C” was applied, i. e. the sheets were rotated about 180° between subsequent forming passes. It was found that process SPD has a significant influence on the increase mechanical properties of forming materials. The obtained results are detailed analyzed in the final part of this paper.Keywords: Dual Rolls Equal Channel Extrusion (DRECE), Cu – Zn based alloy CuZn37, microstructure, mechanical properties.
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