HEAT RESISTANT ALLOY ON BASE OF NICKEL Russian patent published in 2015 - IPC C22C19/05 

FIELD: metallurgy.

SUBSTANCE: heat resistant alloy on Ni base contains in wt %: C ≤ 0.15, Si ≤ 2, Mn ≤ 3%, P ≤ 0.03, S ≤ 0.01, Cr 15 and over or below 28, Mo from 3 to 15, Co over 5 and 25 max., Al from 0.2 to 2, Ti from 0.2 to 3, Nd from f1 to 0.08 and O ≤ 0.4Nd. At that lower limit of Nd is determined by the following expression f1 = 1.7×10-5d+0.05{(Al/26.98)+(Ti/47.88)}, where d is mean grain size, mcm, and each element symbol means content in wt %.

EFFECT: alloy is characterised by increased plasticity after long-term operation at high temperatures, at that SR-cracking can be excluded.

3 cl, 3 tbl