NICKEL GRANULAR HEAT-RESISTANT ALLOY FOR GAS TURBINE DISKS Russian patent published in 2022 - IPC C22C19/05 C22C30/00 C22C1/04 

FIELD: metallurgy.

SUBSTANCE: invention relates to the field of metallurgy, namely, to heat-resistant nickel alloys for gas turbine disks produced by the method of granule metallurgy and intended for operation in the conditions of active impact of high temperatures and stresses. The granular heat-resistant nickel alloy comprises, wt.%: carbon - 0.06 to 0.15, chromium - 4.0 to 8.0, cobalt - 14.0 to 20.0, tungsten - 1.5 to 4.0, molybdenum - 2.0 to 5.0, titanium - 2.0 to 5.0, aluminium - 3.0 to 5.0, niobium - 1.5 to 3.5, tantalum - 4.0 to 7.0, rhenium - 0.5 to 2.5, hafnium - 0.05 to 0.3, iron - 0 to 0.01, boron - 0.01 to 0.03, vanadium - 0.1 to 0.5, zirconium - 0.01 to 0.03, cerium - 0.01 to 0.05, lanthanum - 0.01 to 0.05, yttrium - 0.01 to 0.05, scandium - 0.01 to 0.05, magnesium - 0.01 to 0.06, nickel the rest.

EFFECT: high level of short-term and long-term strength of the heat-resistant nickel alloy produced by the method of granule metallurgy is provided in the range of working temperatures from 20 to 850°C.

4 cl, 2 tbl, 1 dwg