Nickel base superalloy
    21.
    发明授权
    Nickel base superalloy 失效
    镍基超合金

    公开(公告)号:US07208116B2

    公开(公告)日:2007-04-24

    申请号:US09962125

    申请日:2001-09-26

    IPC分类号: C22C19/05

    CPC分类号: C22C19/056

    摘要: A nickel base superalloy comprising 14.0 to 20.0 wt % cobalt, 13.5 to 17.0 wt % chromium, 2.5 to 4.0 wt % aluminium, 3.4 to 5.0 wt % titanium, 0 to 3.0 wt % tantalum, 3.8 to 5.5 wt % molybdenum, 0.035 to 0.07 wt % carbon, 0.01 to 0.04 wt % boron, 0.055 to 0.075 wt % zirconium, 0 to 0.4 wt % hafnium and the balance nickel plus incidental impurities. The nickel base superalloy is suitable for use as gas turbine engine high pressure compressor rotor discs or turbine discs. It is capable of operation at temperatures above 700° C. and has good fatigue crack propagation resistance, creep resistance and tensile strength.

    摘要翻译: 一种镍基超级合金,其包含14.0至20.0重量%的钴,13.5至17.0重量%的铬,2.5至4.0重量%的铝,3.4至5.0重量%的钛,0至3.0重量%的钽,3.8至5.5重量%的钼,0.035至0.07 重量%的碳,0.01至0.04重量%的硼,0.055至0.075重量%的锆,0至0.4重量%的铪,余量为镍和杂质。 镍基超级合金适用于燃气涡轮发动机高压压缩机转子盘或涡轮盘。 能够在700℃以上的温度下工作,具有良好的抗裂纹扩展性,抗蠕变性和拉伸强度。