Structural characteristics magnesium alloys along of the equal channel angular pressing

Abstract

Method of equal channel angular pressing is used for obtaining of new properties of metallic materials. Extrusion of magnesium alloy of the type AZ91 has been verified experimentally with focus on acquisition of basic findings about behaviour of material flow in extrusion channel, about magnitude of deformation resistance, deformability and structural changes in extruded piece. The results of experiments have been described and compared with the values obtained and normal direct extrusion. Practical use of the method ECAP consists in possibilities of obtaining a fine-grain structure in extruded pieces and to make use of it at subsequent super-plastic forming.