Nickel-base superalloys and components formed thereof
    8.
    发明授权
    Nickel-base superalloys and components formed thereof 有权
    镍基超级合金及其形成的部件

    公开(公告)号:US08992700B2

    公开(公告)日:2015-03-31

    申请号:US12474651

    申请日:2009-05-29

    IPC分类号: C22C19/05 C22C30/00 C22C1/04

    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, 18.0 to 30.0% cobalt, 11.4 to 16.0% chromium, up to 6.0% tantalum, 2.5 to 3.5% aluminum, 2.5 to 4.0% titanium, 5.5 to 7.5% molybdenum, up to 2.0% niobium, up to 2.0% hafnium, 0.04 to 0.20% carbon, 0.01 to 0.05% boron, 0.03 to 0.09% zirconium, the balance essentially nickel and impurities, wherein the titanium:aluminum weight ratio is 0.71 to 1.60.

    摘要翻译: 一种伽马级镍基超级合金以及由此形成的部件具有改善的高温驻留能力,包括蠕变和保持时间疲劳裂纹扩展行为。 组件的一个具体实例是燃气涡轮发动机的粉末冶金涡轮盘。 γ-贱金属镍基超合金含有18.0至30.0%的钴,11.4至16.0%的铬,至多6.0%的钽,2.5至3.5%的铝,2.5至4.0%的钛,5.5至7.5%的钼, 至2.0%的铌,0.04%至0.20%的碳,0.01至0.05%的硼,0.03至0.09%的锆,余量基本为镍和杂质,其中钛:铝的重量比为0.71至1.60。