from the conferences organized by TANGER Ltd. provisional website
Achieving a very high degree of deformation in sheet metal forming is a very complex problem. It is the main prerequisite for achieving an ultra-fine grain structure in the material. For the extrusion of the sheet of Cu with the DRECE method, at least 8-10 passes through the forming tool must be performed to achieve sufficient refinement of the structure. This is in contrast to a much smaller number of passages to achieve an equally high degree of deformation in the ECAP method when we use the passage type marked as “C”. This method is used for continuous extrusion of a strip of sheets. The paper analyzes the increase of mechanical properties and the refinement of the structure on the newly developed forming device (three-roll feed of the material combined with extrusion) for the Cu sheet metal strip, when choosing the “C” deformation path (rotation of the strip of 180° after each pass).Keywords: Severe plastic deformation (SPD), DRECE method, pure Cu, microstructure, mechanical properties
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