METHOD OF TREATMENT OF AN ARTICLE WITH AN EQUIAXIAL STRUCTURE MADE OUT OF A HEAT-RESISTANT ALLOY Russian patent published in 2005 - IPC

FIELD: metallurgy; aircraft industry; power machine-building industry; methods of treatment of articles with an equiaxial structure made out of heat-resistant alloy.

SUBSTANCE: the invention is pertaining to the field of metallurgy, in particular, to a method of treatment of an article with an equiaxial structure made out of heat-resistant alloy, that may find application in the aircraft industry and power machine-building industry at production of component parts of a hot tract of gas-turbine engines. Apply a coating out of heat-resistant nickel alloy for a monocrystalline casting onto an article with an equiaxial structure made out of a heat-resistant nickel alloy. Then conduct hardening by the first vacuum thermal treatment of the article with production of a coating within the range of temperatures from the annealing temperature up to the temperature of dissolution of the hardening γ - phase of the heat-resistant alloy. After that the surface of the article with the applied coating is exposed to the plastic deformation. Then carry out the second vacuum thermal treatment of the article with the received coating within the range of temperatures from the annealing temperature up to the temperature of dissolution of the hardening γ-phase of the heat-resistant alloy of the article. The technical result consists in extension of the service life of the turbines working vanes made out of the heat-resistant alloys not-containing the rare and expensive alloying elements, in decreased labor input, power consumption and overall cost of production of the gas-turbine engines.

EFFECT: the invention ensures extension of the service life of the turbines working vanes made out of the heat-resistant alloys, decreased labor input, power consumption and overall cost of production of the gas-turbine engines.

3 cl, 1 ex, 1 tbl