FIELD: metallurgy.
SUBSTANCE: invention relates namely to a method for producing powder from a nickel alloy with high resistance to hydrogen embrittlement and high mechanical properties, as well as to its applications. Method for producing powder from a nickel alloy containing, in wt.%: Ni 50 – 55, Cr 17 – 21, Mo > 0 – 9, W 0 – < 9, Nb 1 – < 5.7, Ta > 0 – 4.7, Ti 0.1 – 3.0, Al 0, 4 – 4.0, Co no more than 3.0, Mn no more than 0.35, Si no more than 0.35, Cu no more than 0.23, C 0.001 – 0.045, S no more than 0.01, P 0.001 – 0.02, B 0.001 – 0.01, the rest is Fe and the usual production-related impurities, when the following ratios are met: Nb + Ta: > 1 – 5.7, Al + Ti: > 1.2 – 5, Mo + W: 3 – 9, includes smelting the alloy in a vacuum induction furnace, holding the melt for 5 minutes to 2 hours for homogenization, installation in a closed spray unit with gas supply, dew point from -10 to 120°C, injection of the melt through a nozzle into a gas flow at a gas flow rate from 2 m3/min to 150 m3/min, collecting cured powder particles in a hermetically sealed container and hermetically sealed packaging of the powder in a protective gas atmosphere containing argon. In this case, the particle size ranges from 5 to 250 microns, the powder particles are spherical, the powder contains gas inclusions with a pore area of more than 0.0 to 4% (pores > 1 micron) of the total surface of the objects being evaluated, the apparent density of the powder ranges from 2 to alloy density of 8 g/cm3.
EFFECT: resulting powder has high mechanical properties, as well as high resistance to hydrogen embrittlement.
10 cl, 37 dwg, 8 tbl
