| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: invention related to metallurgy, namely to heat-resistant nickel-base wrought alloys and the articles manufactured from these alloys and can be used to manufacture disks of the turbines of gas-turbine engines and other units and parts operating at temperatures up to 800C in all climatic conditions. The alloy and an article manufactured from it has the following compolsition, wt %: cobalt 9.5-16.0; chromium 9.0-11.0; tungsten 2.5-3.4; molybdenum 3.5-4.8; aluminium 3.4-4.0; titanium 2.3-3.5; niobium 4.1-4.8; vanadium 0.2-0.8; carbon 0.04-0.10; boron 0.007-0.02; lanthanum 0.003-0.06; cerium 0.003-0.02; magnesium 0.003-0.02; scandium 0.003-0.05; silicon 0.005-0.3; the rest is nickel. The alloy may additionally contain 0.05-2.0 wt % of tantalum. ^ EFFECT: increased heat-resistance at temperatures up to 800C, plastic fatigue strength, strength at room temperature and reduction in the rate of sulphide-oxide corrosion. ^ 3 cl, 2 tbl, 4 ex |
