| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: invention refers to production of heat resistant alloys by method of directional crystallisation on base of nickel designed for fabrication of items with mono-crystal and directional structure, for example blades of gas turbines, continuously operating at temperature up 1150C. Heat resistant alloy contains wt %: chromium 2.5-4.5, cobalt 5.0-6.0, aluminium 5.4-6.0, tungsten 3.5-4.5, molybdenum 2.8-3.8, tantalum 5.3-6.3, rhenium 5.8-6.8, ruthenium 4.6-6.4, cerium 0.001-0.02, lanthanum 0.002-0.1, neodymium 0.0005-0.01, yttrium 0.002-0.02, carbon 0.002-0.05, boron 0.0004-0.004, magnesium and/or calcium 0.001-0.009, nickel - the rest. ^ EFFECT: improved heat resistance, increased long-term hardness. ^ 2 tbl, 5 ex |
