摘要:
A precipitation hardened nickel-base alloy, characterized in that its composition is, in weight percentages: 18%≦Cr≦22%, preferably 18%≦Cr≦20%; 18%≦Co≦22%, preferably 19%≦Co≦21%; 4%≦Mo+W≦8%, preferably 5.5%≦Mo+W≦7.5%; trace amounts≦Zr≦0.06%; trace amounts≦B≦0.03%. preferably trace amounts≦B≦0.01%; trace amounts≦C≦0.1%, preferably trace amounts≦C≦0.06%; trace amounts≦Fe≦1%; trace amounts≦Nb≦0.01%; trace amounts≦Ta≦0.01%; trace amounts≦S≦0.008%; trace amounts≦P≦0.015%; trace amounts≦Mn≦0.3%; trace amounts≦Si≦0.15%; trace amounts≦O≦0.0025%; trace amounts≦N≦0.0030%; the remainder being nickel and impurities resulting from the elaboration, the Al and Ti contents further satisfying the conditions: Ti/Al≦3; (1) Al+1.2 Ti≧2%; (2) (0.2 Al−1.25)2−0.5 Ti≧0%; (3) Ti+1.5 Al≦4.5%. (4) Part made in this alloy and its manufacturing method.
摘要:
The present invention relates to a nickel-based superalloy with a high γ′ phase content, intended for the manufacture of components by additive manufacturing followed by heat treatment, characterized in that its composition comprises, in percentages by weight of the total composition: Cr: 15.5-16.5; Co: 7.7-11; Mo+W=5.5-7.5; Al: 2.9-4.3; Ti: 2.6-3.2; Ta: 1.5-2.2; Nb: 0.3-1.1; C: 0.01-0.13; B: 0.0005-0.015; Zr: 0.01; Hf: 0.0001-0.5; Si: ≤0.06; Ni: balance, and also the unavoidable impurities. It further relates to a method for manufacturing superalloy powder and turbine components.