NICKEL-BASED SUPER ALLOY HARDENED BY GAMMA-DASH PHASE

摘要

FIELD: metallurgy.;SUBSTANCE: proposed alloy consists of the following elements, in wt %: 2-12 Co, 17-21 Cr, 2-5 Mo and/or W and/or Re, up to 1 Mo, 1-4 W, 4-4.7 Al, 3-7 Ta, 0.01-0.3 C and/or Zr and/or B, 0.05-1 Hf, 0.05-1 Si, 0.01-0.2 sum of rare-earth elements, for example, Sc, Y, actinoids and lanthanides. Said alloy is intended for use as main alloy for moderate-load hot parts, particularly, in gas turbines, and as process alloy for cladding and repair by build-up of moderate-load hot parts, particularly, in gas turbines.;EFFECT: higher antirust properties, resistance to oxidation, better compatibility with coats and weld ability.;15 cl, 2 dwg