RU94023000A - Nickel-base casting heat-resistant alloy - Google Patents

Abstract

FIELD: metallurgy. SUBSTANCE: the known nickel-base alloy containing carbon, chrome, titanium, aluminium, cobalt, niobium, tungsten, molybdenum, iron, lanthanum, hafnium, boron, cerium and yttrium has additionally tantalum an rhenium at the following ratio of components, wt.-%: carbon 0.12-0.18; chrome 4.3-5.6; titanium 0.9-1.3; aluminium 5.65-6.25; cobalt 8-10; niobium 4.0-4.8; tungsten 10.9-12.5; molybdenum 2.5-3.5; iron 0.1-1.0; lanthanum 0.005-0.05; hafnium 0.01-0.1; boron 0.005-0.015; cerium 0.005-0.025; yttrium 0.005-0.025; tantalum 0.15-0.35; rhenium 0.15-0.35, and nickel - the rest. EFFECT: increased hardness at increased temperature. 1 cl

Claims (1)

The invention relates to metallurgy, in particular to alloys used for surfacing parts that work on abrasion at high temperatures under significant cyclic and contact loads, for example, gas turbine engine blades or hot extrusion dies from difficult to deform steels and alloys. The purpose of the invention is to increase the initial hardness of the alloy when operating at high temperatures. To achieve this goal, tantalum and rhenium are additionally introduced into the well-known nickel-based alloy containing carbon, chromium, titanium, aluminum, cobalt, niobium, tungsten, molybdenum, iron, lanthanum, hafnium, boron, cerium and yttrium, in the following ratio of components, wt. %: carbon 0.12 - 0.18, chromium 4.3 - 5.6, titanium 0.9 - 1.3, aluminum 5.65 - 6.25, cobalt 8.0 - 10.0, niobium 4, 0 - 4.8, tungsten 10.9 - 12.5, molybdenum 2.5 - 3.5, iron 0.1 - 1.0, lanthanum 0.005 - 0.05, hafnium 0.01 - 0.1, boron 0.005 - 0.015, cerium 0.005 - 0.025, yttrium 0.005 - 0.025, tantalum 0.15 - 0.35, rhenium 0.15 - 0.35, nickel - the rest.