NIOBIUM-BASED COMPOSITE MATERIAL STRENGTHENED BY NIOBIUM SILICIDES, AND ARTICLE PRODUCED FROM IT

摘要

FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, in particular to niobium-based eutectic composite materials strengthened by niobium silicides, intended for the production of heat-loaded articles and can be used in the aircraft and power industry. The niobium-based composite material strengthened by niobium silicides contains, at %: silicon 15.0-17.0; titanium 12.0-16.0; hafnium 2.5-5.5; aluminium 2.0-4.0; chrome 3.0-5.0; zirconium 4.0-6.0; molybdenum 8.0-12.0; yttrium 0.5-2.0; niobium - the rest. The composite material may contain niobium silicide NbSiand/or niobium silicide NbSi.EFFECT: material is characterised by high values of short-term strength.5 cl, 1 tbl, 1 ex