FIELD: metallurgy.
SUBSTANCE: invention relates to nickel-cobalt alloys. Ni-Co alloy contains, wt %: Fe from >0 to maximum 10, Co from >12 to <35, Cr from 13 to 23, Mo from 1 to 6, Nb + Ta from 4.7 to 5.7, Al from >0 to <3, Ti from >0 to <2, C from >0 to maximum 0.1, P from >0 to maximum 0.03, Mg from >0 to maximum 0.01, B from >0 to maximum 0.02, Zr from >0 to maximum 0.1, the rest is Ni, if necessary: V to 4, W from 4, possibly, impurity elements: Cu maximum 0.5, S maximum 0.015, Mn maximum 1.0, Si maximum 1.0, Ca maximum 0.01, N maximum 0.03, O maximum 0.02. Dissolution temperature γ' is 900-1030°C at 3 at. % ≤ Al + Ti ≤ 5.6 at % and 11.5 at % ≤ Co ≤ 35 at %, stable microstructure after dispersion hardening at 800°C for 500 h and the ratio of aluminium and titanium contents in at% Al/Ti ≥ 5.
EFFECT: alloy is characterized by high mechanical properties, good formability and stable microstructure.
13 cl, 7 dwg, 8 tbl
