METHOD OF PRODUCING COMPOSITE MATERIAL BASED ON VANADIUM ALLOY AND STEEL Russian patent published in 2019 - IPC B32B15/01 B23K20/02 B23K20/04 C22F1/16 

FIELD: technological processes.

SUBSTANCE: invention relates to production of composite materials, namely deformation-thermal treatment of composite materials based on metals and alloys. Method of producing composite material consisting of vanadium alloy inner layer V – 3–11 wt% Ti – 3–6 wt% Cr and two outer layers of corrosion-resistant steel of ferritic grade with chromium content of not less than 13 wt%, includes preparation of a composite workpiece consisting of said inner layer and outer layers, hot treatment by pressure and subsequent exposure in furnace. Prepared composite workpiece, thickness of inner layer of which is 1.5–2 times more than total thickness of outer layers of corrosion-resistant steel, hot working is performed with pressure of said workpiece in the temperature range of 1,050–1,150 °C with degree of reduction from 30 to 40 % and with subsequent exposure for 1–3 hours with temperature reduction to 500–700 °C, then annealing workpiece by heating to temperature of 850–950 °C, holding for 2–4 hours and subsequent cooling in furnace.

EFFECT: said production modes provide formation of zone of diffusion connection between vanadium alloy and steel of increased thickness with size of 60–70 mcm, which at given ratio of thicknesses in initial composite billet leads to production of higher complex of mechanical properties of composite material.

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