METHOD OF PRODUCING MODIFYING AGENT FOR NICKEL ALLOYS Russian patent published in 2012 - IPC C22C35/00 B22F3/12 

FIELD: metallurgy.

SUBSTANCE: ultradispersed powder of titanium carbonitride and powders of titanium, aluminium, tungsten and niobium are added to mix containing powders of molybdenum, chromium and nickel. Said powder of titanium carbonitride is premixed for 1.5-2 h and mixed with titanium powder for 10-20 min. Aluminium powder is added thereto and mixed for 10-20 min. Thereafter, powders of tungsten, niobium, molybdenum, chromium and nickel are added and mixed for 5-10 min. Mix is degassed in vacuum furnace at 2·10^-3-2·10^-4 mm Hg and 250-400°C for 1-5 min and mixed for 1.5-2.5 h. Resultant mix is compacted at 20-100 Mpa and sintered in vacuum for 30 min.

EFFECT: reduced content of gaseous admixtures, fine grains equally distributed over alloy volume.

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