CAST HEAT-RESISTANT NICKEL ALLOY WITH MONOCRYSTAL STRUCTURE FOR GAS TURBINE ENGINE BLADES Russian patent published in 2024 - IPC C22C19/05 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy, namely to cast heat-resistant nickel alloys with monocrystal structure, intended for casting blades and other critical parts of gas turbine engines operating at temperatures of up to 1,100–1,150 °C and higher. Cast heat-resistant nickel alloy with monocrystal structure for gas turbine engine blades contains, wt. %: carbon 0.002–0.05; chrome 2.0–5.0; cobalt 2.0–6.0; tungsten 1.0–3.0; molybdenum 2.5–5.0; titanium 0.2–1.2; aluminium 5.0–6.5; tantalum 6.0–8.5; hafnium 0.1–0.5; rhenium 5.5–8.0; vanadium 0.1–0.5; ruthenium 7.5–10.0; boron 0.005–0.02; zirconium 0.005–0.03; cerium 0.001–0.1; lanthanum 0.001–0.1; yttrium 0.001–0.1; magnesium 0.01–0.03; manganese 0.01–0.2; scandium 0.005–0.03; nickel – balance.

EFFECT: higher heat resistance of alloy and reduced specific weight.

4 cl, 2 tbl