METHOD FOR ELECTRON-BEAM ADDITIVE PRODUCTION OF PRODUCTS FROM COPPER AND ALUMINUM-SILICON ALLOY WITH A FUNCTIONALLY GRADED STRUCTURE Russian patent published in 2023 - IPC B23K9/04 C23C4/12 

FIELD: metal processing.

SUBSTANCE: method for the production of products with a functionally graded composite structure made of copper and an aluminum-silicon alloy by additive manufacturing methods, in particular to methods for obtaining products with functionally graded properties with improved performance characteristics using electron beam additive methods. The method for electron-beam additive production of a product made of copper and an aluminum-silicon alloy with a functionally gradient structure is characterized by the fact that it includes the simultaneous feeding at an angle to a substrate of stainless steel grade “08Х18Н10Т” of two monolithic wires, one made of copper and the second made of an aluminum-silicon alloy, with the provision of their melting by high-energy action of an electron beam with the formation of a melt bath on the substrate to form a functionally graded material, consisting of three zones with different volume content of the proportion of aluminum-silicon alloy in relation to copper by choosing the feed rate of both wires, wherein the first zone is formed at a constant wire feed speed of 1066-1010 mm/min for copper wire and 477-453 mm/min for aluminum-silicon alloy wire, the second zone is formed at a wire feed speed varying from 1066 to 897 mm/min for copper wire and from 453 to 810 mm/min for aluminum-silicon alloy wire, and the third zone is formed with a constant wire feed speed of 920-897 mm/min for copper wire and 783-810 mm/min for aluminum-silicon alloy wires.

EFFECT: obtaining a functionally graded material with a defect-free structure, obtained by simultaneous fusion of two wires of copper and an aluminum-silicon alloy with a uniform transition in the concentration of the aluminum alloy over the volume of the material.

6 cl, 13 dwg, 3 ex