| 摘要 |
<p>FIELD: metallurgy. ^ SUBSTANCE: invention relates to metallurgy, particularly, to refractory nickel-base alloys intended for critically-loaded parts operated at increased temperatures in gas turbine engines. Proposed alloy comprises the following components in wt %: carbon - 0.06-0.13, chromium - 8.0-12.0, cobalt - 14.0-16.0, tungsten - 5.4-7.0, molybdenum - 2.0-3.5, titanium - 3.0-4.5, aluminium - 3.0-4.5, niobium - 1.5-2.5, tantalum - 0.5-4.0, hafnium - 0.05-0.5, rhenium - 0.2-0.7, boron - 0.005-0.05, zirconium - 0.001-0.05, magnesium - 0.001-0.05, iron - 0.01-1.0, manganese - 0.001-0.5, silicon - 0.001-0.5, nickel making the rest. ^ EFFECT: proposed alloy features high strength, creep flow and reduced crack propagation rate at operating temperatures. ^ 1 tbl, 1 ex</p> |
