| 摘要 |
FIELD: nonferrous metal alloys. SUBSTANCE: invention, in particular, relates to refractory nickel-based alloys used for manufacturing heavy-duty parts, e. g. gas turbine blades operated at temperatures up to 1000 C, by directional crystallization and monocrystallic casting methods. Proposed alloy contains, wt %: chromium 1.0- 4.0, aluminum 5.0-7.0, titanium <2.0, molybdenum <= 4.0, tungsten 12.0- 16.0, tantalum 4.0-10.0, cobalt 10.0-14.0, niobium <= 2.0, yttrium 0.003- 0.1, lanthanum 0.001-0.1, cerium 0.003-0.1, and nickel - to 100%, provided that 18,0<=W+Ta<=24,0, and summary content of chromium, tungsten, tantalum, molybdenum, and niobium does not exceed 26.0%. EFFECT: reduced cost due to exclusion of expensive rhenium and balanced content of other alloying components. 2 tbl |
