General Electric Company

Andrew Martin Powell

Richard DiDomizio

David Paul Mourer

Timothy Hanlon

Andrew Ezekiel Wessman

Kenneth Rees Bain

Daniel Yeuching Wei

Richard Didomizio

A gamma prime nickel-base superalloy and components formed therefrom that exhibit improved high-temperature dwell capabilities, including creep and hold time fatigue crack growth behavior. A particular example of a component is a powder metallurgy turbine disk of a gas turbine engine. The gamma-prime nickel-base superalloy contains, by weight: 16.0 to 30.0% cobalt; 9.5 to 12.5% chromium; 4.0 to 6.0% tantalum; 2.0 to 4.0% aluminum; 2.0 to 3.4% titanium; 3.0 to 6.0% tungsten; 1.0 to 4.0% molybdenum; 1.5 to 3.5% niobium; up to 1.0% hafnium; 0.02 to 0.20% carbon; 0.01 to 0.05% boron; 0.02 to 0.10% zirconium; the balance essentially nickel and impurities. The superalloy has a W+Nb&#x2212;Cr value of at least &#x2212;6, is free of observable amounts of sigma and eta phases, and exhibits a time to 0.2% creep at 1300&#xb0; F. and 100 ksi of at least 1000 hours.

Superalloys and components formed thereof

Growing community of inventors

Cincinnati, OH, United States of America

Andrew Martin Powell