发明名称 |
SUPERALLOYS AND COMPONENTS FORMED THEREOF |
摘要 |
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-Cr value of at least -6, is free of observable amounts of sigma and eta phases, and exhibits a time to 0.2% creep at 1300°F and 100 ksi of at least 1000 hours. |
申请公布号 |
CA2918337(A1) |
申请公布日期 |
2015.01.29 |
申请号 |
CA20142918337 |
申请日期 |
2014.02.20 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
MOURER, DAVID PAUL;DIDOMIZIO, RICHARD;HANLON, TIMOTHY;WEI, DANIEL YEUCHING;WESSMAN, ANDREW EZEKIEL;BAIN, KENNETH REES;POWELL, ANDREW MARTIN |
分类号 |
C22C19/05;C22F1/10 |
主分类号 |
C22C19/05 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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