GAMMA/GAMMA'-SUPERALLOY ON BASIS OF NICKEL WITH MULTIPLE REACTION ACTIVE ELEMENTS, AND USE OF ABOVE SAID SUPERALLOY IN COMPLEX SYSTEMS OF MATERIALS Russian patent published in 2013 - IPC C22C19/05 C22C30/00 B23K35/30 F01D5/00 

FIELD: metallurgy.

SUBSTANCE: alloy contains the following, wt %: up to 20 of sum of Co and Fe, between 17 and 21 Cr, between 0.5 and 3 of sum of Mo and W, not more than 2 Mo, between 4.8 and 6 Al, between 1.5 and 5 Ta, between 0.01 and 0.2 of sum of C and B, between 0.01 and 0.2 Zr, between 0.05 and 1.5 Hf, between 0.05 and 1.0 Si, and between 0.01 and 0.5 of sum of at least two elements of actinides and rare-earth metals, such as Sc, Y and lanthanides. Content of each element is not more than 0.3. Alloy is used in high-temperature components representing rotating blades, guide vanes, heat shields, seals or parts of a combustion chamber in gas turbines, as well as process alloy for repair welding and/or cladding of such high-temperature components.

EFFECT: alloy has high properties of stability to oxidation, resistance to high-temperature corrosion, strength and ductility, weldability.

21 cl