| 简介 |
FIELD : metallurgy.
SUBSTANCE : invention relates to metallurgy, in particular to fabricable, high strength alloys that can be used to manufacture gas turbine engine parts. Nickel-chromium-cobalt-molybdenum-aluminum alloy contains, wt% : from 15 to 20 chromium, from 9.5 to 20 cobalt, from 7.25 to 10 molybdenum, from 2.72 to 3.9 aluminum, up to 10.5 iron, up to 0.15 carbon, up to 0.015 boron, up to 0.75 titanium, up to 1 niobium, up to 1.5 tantalum, up to 1 hafnium, up to 2 tungsten, up to 1 manganese, up to 0.6 silicon, up to 0.06 zirconium, up to 0.05 magnesium, up to 0.05 calcium, up to 0.05 rare earth element, up to 0.5 copper, up to 0.015 sulphur, up to 0.03 phosphorus, with the remaining amount is nickel and impurities.
EFFECT : alloy is fabricable, has high resistance to fracture and high resistance to oxidation of up to 2100°F (1149°C).
17 cl, 12 tbl |
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