METHOD OF PRODUCING ARTICLES FROM POWDERS OF REFRACTORY NICKEL ALLOYS Russian patent published in 2016 - IPC B22F3/14 B22F9/10 

FIELD: metallurgy.

SUBSTANCE: invention relates to refractory nickel alloys powder metallurgy and is used in production of articles, operating at high temperatures with increased service life in aircraft gas turbine engines and gas pumping stations. In disclosed method produced by crystallization of powder particles of specified alloy melt powder, performing separation of powder from foreign metal and non-metal particles, powder is placed into steel capsule, capsules with powder are evacuated and hot isostatic pressing is carried out. Then capsule material is removed from article surface and heat treatment is carried out to achieve optimal preset mechanical properties. At that, crystallization of powder particles is performed at rate of not less than 50,000 degrees K/s to produce particles, which size does not exceed diameter of 50 mcm, and gas medium during powder particles production has dew point of not more than minus 52 degrees Celsius, corresponding to not more than 0.0012 % of water vapor volume fraction.

EFFECT: enabling higher efficiency of production and quality of articles.

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