Аңдатпа
In this paper the influence of various modes of preliminary heat treatment of workpieces made of M1 copper alloy and L63 brass on the possibility of forming a favorable fine-grained structure for further processing using severe plastic deformation during radial-shear rolling was investigated.The results of the microstructure study obtained during the physical experiment had proved once again that for copper the most rational pre-heat treatment is quenching at a temperature of 500°C, since it allowed the initial structure to be refined from 80 microns to 50 microns, while the structure of copper after quenching consists of polyhedral grains elongated in the direction of the cooling gradient.For brass L63, annealing is the most suitable pre-heat treatment, since with slow cooling in this alloy, the most complete transition of the β-phase to the α-phase is ensured, which favorably affects the further processing of this alloy using radial-shear rolling.