METHOD FOR PRODUCTION OF ARTICLES FROM POWDERS OF HIGH-ALLOYED NICKEL-BASED ALLOYS Russian patent published in 2017 - IPC B22F3/16 B82Y30/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to powder metallurgy of refractory nickel alloys and can be used in production of shafts and discs operating at high temperatures with increased service life in aircraft gas turbine engines and gas pumping stations. Method of making articles from powder of a high-alloyed nickel-based alloy involves obtaining the powder of a high-alloyed nickel-based alloy, compacting the powder as a 3D billet, plastic deformation of the 3D billet in a sealed capsule-container and thermal treatment. Obtained is an alloy powder with the particle size of less than 50 mcm by gas-jet spraying the melt with crystallization at the cooling rate of not less than 50,000–100,000 K per second to form in the structure of the powder particles a supersaturated solid solution of alloying elements in nickel with sub-dendrite structure sized less than 2,000 nm. Compacting the powder as a 3D billet in a sealed capsule-container is carried out by stamping at the temperature of 500 °C up to a temperature not more than the recrystallization temperature for the high-alloyed nickel-based alloy.

EFFECT: provided is higher level and stability of mechanical properties, as well as higher yield.

3 cl, 1 tbl