NICKEL-BASE ALLOY AND ARTICLE MADE OF THEREOF Russian patent published in 2003 - IPC

FIELD: metallurgy. SUBSTANCE: invention relates to casting nickel heat-resistant alloys and articles with monocrystalline structure making by method of precise casting where the main requirements are high strength at room temperature and heat-resistance in the range of temperatures 1100-1250 C. Invention proposes nickel-base alloy containing aluminum, chrome, molybdenum, tungsten, titanium, cobalt, carbon, lanthanum, cerium and, additionally, rhenium in the following ratio of components, wt.-%: aluminum, 8.5-9.2; chrome, 5.0-6.0; molybdenum, 3.0-4.0; tungsten, 4.5-5.5; titanium, 0.5-1.0; cobalt, 2.0- -3.0; carbon, 0.003-0.005; lanthanum, 0.02-0.025; cerium, 0.003-0.025; rhenium, 1.0-2.0; nickel, the balance, and article made of thereof. The usage of proposed nickel-base alloy enhances safety of members and enhances their operating life. Invention provides the enhancement of heat-resistance in the range of temperatures 1100-1250 C and transient strength at room temperature. EFFECT: improved and valuable properties of alloy and article. 3 cl, 2 tbl, 1 ex