OPTIMIZED NICKEL-BASED SUPERALLOY

摘要

A nickel-based alloy for high-temperature applications, in particular for use in turbomachines, which has a chemical composition as set forth in the claims, wherein the ratio of the fractions of Ta to Al in percent by weight is greater than or equal to 1 and less than or equal to 2, and wherein the ratio of the fractions of Co to W in percent by weight is greater than or equal to 2 and less than or equal to 5.

主权项

1. A nickel-based alloy for high-temperature applications, wherein the alloy has a chemical composition which comprises, in % by weight:
Al from 3.7 to 7.0 Co from 10 to 20 Cr from 2.1 to 7.2 Mo from 1.1 to 3.0 Re from 5.7 to 9.2 Ru from 3.1 to 8.5 Ta from 4.1 to 11.9 Ti from 0 to 3.3 from 2.1 to 4.9 from 0 to 0.05 Si from 0 to 0.1 Mn from 0 to 0.05 from 0 to 0.015 S from 0 to 0.001 from 0 to 0.003 Cu from 0 to 0.05 Fe from 0 to 0.15 from 0 to 0.15 Zr from 0 to 0.015 from 0 to 0.001 remainder nickel and unavoidable impurities, and wherein a ratio of fractions of Ta to Al in percent by weight is greater than or equal to 1 and less than or equal to 2, and a ratio of fractions of Co to W in percent by weight is greater than or equal to 2 and less than or equal to 5.