Abstract
A study is made of the effect of different metal-shaping methods (extrusion and rotary rolling) on the structure and ductility properties of semifinished products made of hypereutectoid silumins with 17–23% Si. It is established that the degree of fragmentation of the silicon crystals in the semifinished products depends on their degree of deformation by different metal-shaping methods. The article also examines the effect of the type of stress-strain state present during extrusion and rotary rolling and the kinematics of these processes on the mechanism of structure formation in hypereutectoid silumins.
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