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    High strength Ni-base superalloy for directionally solidified castings
    1.
    发明公开
    High strength Ni-base superalloy for directionally solidified castings 失效
    Hochfeste Superlegierung auf Nickelbasisfürgerichtet erstarrte Giesteilen

    公开(公告)号：EP0789087A1

    公开(公告)日：1997-08-13

    申请号：EP97101645.6

    申请日：1997-02-03

    申请人： HITACHI, LTD. ,  HITACHI METALS, LTD.

    发明人： Tamaki, Hideki ,  Yoshinari, Akira ,  Okayama, Akira ,  Kobayashi, Mitsuru ,  Kageyama, Kagehiro ,  Ohno, Takehiro

    IPC分类号： C22C19/05 ,  B22D27/04

    CPC分类号： B22D27/045 ,  C22C19/056 ,  C22C19/057

    摘要： In order to provide a high strength Ni-base superalloy for directionally solidified castings, which is prevented from solidification cracking at the casting, having a sufficient grain boundary strength for ensuring reliability during its operation and a superior high temperature concurrently, a high strength Ni-base superalloy for directionally solidified castings having a superior grain boundary strength, which contains C: 0.05 % to less than 0.1 %, B: 0.015 % to 0.04 %, Hf: 0.01 ∼ less than 0.5 %, Zr: less than 0.01 %, Cr: 1.5 % ∼ 16 %, Mo: utmost 6 %, W: 2 ∼ 12 %, Re: 0.1 ∼ 9 %, Ta: 2 ∼ 12 %, Nb: utmost 4 %, Al: 4.5 ∼ 6.5 %, Ti: less than 0.5 %, Co: less than 9 %, and Ni: at least 60 % in weight, is disclosed.

    摘要翻译： 为了提供一种用于定向凝固铸件的高强度Ni基超合金，其在铸造时防止固化裂纹，具有足够的晶界强度，以确保其操作期间的可靠性和优异的高温，高强度Ni- 具有优异的晶界强度的定向凝固铸件用基体超合金，其含有C：0.05〜小于0.1％，B：0.015〜0.04％，Hf：0.01〜少于0.5％，Zr：小于0.01％，Cr： ：1.5％类似16％，Mo：最大6％，W：2类12％，Re：0.1类似9％，Ta：2类12％，Nb：最大4％，Al：4.5类6.5％，Ti：少 公知：Co：小于9％，Ni：至少为60重量％。

    Highly hot corrosion resistant and high-strength superalloy, highly hot corrosion resistant and high-strength casting having single crystal structure, gas turbine and combined cycle power generation system
    3.
    发明公开
    Highly hot corrosion resistant and high-strength superalloy, highly hot corrosion resistant and high-strength casting having single crystal structure, gas turbine and combined cycle power generation system 失效
    在高温下具有高强度的单晶具有在​​高温下的燃气涡轮机的耐腐蚀性和联合循环发电设备的耐腐蚀性的高强度超级合金。

    公开(公告)号：EP0560296A1

    公开(公告)日：1993-09-15

    申请号：EP93103777.4

    申请日：1993-03-09

    申请人： HITACHI METALS, LTD. ,  HITACHI, LTD.

    发明人： Sato, Koji ,  Ohno, Takehiro ,  Yasuda, Ken ,  Tamaki, Hideki ,  Yoshinari, Akira

    IPC分类号： C22C19/05 ,  C30B11/00 ,  C30B29/52 ,  F02D43/00

    CPC分类号： C22C19/057 ,  C22C19/056 ,  C30B11/00 ,  C30B29/52

    摘要： A superalloy having more excellent hot corrosion resistance than conventional single crystal alloys, oxidation resistance levels as high as that of conventional single crystal alloys, high strength, and creep rupture strength ; single crystal members used for a blade (Fig. 4) or a nozzle (Fig. 5) produced by utilizing such an alloy ; and a combined cycle power generation system produced by utilizing such members. A highly hot corrosion resistant and high-strength superalloy consisting essentially of, by weight, 6 -12% Cr, 4.5 - 6.5% Al, 2 - 12% W, 2.5 - 10% Ta, not more than 5.8% Mo, 0.1 - 3% Co, 0.2 - 3% Nb, 0.1 - 4% Re, not more than 0.3% Hf, and the balance being Ni and unavoidable impurities ; single crystal members used for a blade (Fig. 4) or a nozzle (Fig. 5) produced utilizing such an alloy ; and a combined cycle power generation system produced by utilizing such members.

    摘要翻译： 具有比传统的单晶合金，耐氧化性水平高达象常规的单晶合金，高强度和蠕变断裂强度的更优异的高温耐腐蚀性超级合金; 用于叶片单晶构件或喷嘴通过在合金利用检查产生（图4）（图5）; 和联合循环发电系统通过利用寻求成员产生的。 高度热耐腐蚀和高强度超级合金基本上由，按重量计，6 - 12％的Cr，4.5 - 6.5％的Al，2 - 12％的W，2.5 - 10％的Ta，不超过5.8％的Mo，0.1 - 3％的Co，0.2 - 3％的Nb，0.1 - 4％的Re，不大于0.3％Hf和余量为Ni和不可避免的杂质; 用于叶片单晶成员或一个喷嘴（图5）上产生的合金利用检查（图4）; 和联合循环发电系统通过利用寻求成员产生的。