CASTABLE ALLOY ON BASIS OF INTERMETALLIC COMPOUND NiAl AND ITEM MADE FROM IT Russian patent published in 2011 - IPC C22C19/05 

FIELD: metallurgy.

SUBSTANCE: alloy contains the following, wt %: aluminium 8.0-9.1, chrome 5.0-6.5, tungsten 2.5-3.5, molybdenum 4.5-5.5, titanium 0.3-0.8, carbon 0.001-0.01, zirconium 0.05-0.5, lanthanum 0.1-0.3, hafnium 0.1-0.5, tantalum 0.1-1.0, cobalt 4.0-6.0, rhenium 1.9-2.6, nickel and attached foreign materials are the rest. As attached foreign materials it contains the following, wt %: iron, niobium, manganese of not more than 0.3 each; sulphur and phosphorus of not more than 0.005 each; stannum and antimony of not more than 0.003 each; plumbum of not more than 0.001; bismuth of not more than 0.0005.

EFFECT: use of alloy in the items improves their reliability and service life owing to improving crack resistance, durability at low-cycle fatigue and improving resistance of thermal fatigue at thermal cycling.

3 cl, 2 tbl, 3 ex