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    Multi-phase metallic systems of the .gamma.,.gamma.', NBC type with improved structural stability
    1.
    发明授权
    Multi-phase metallic systems of the .gamma.,.gamma.', NBC type with improved structural stability 失效
    具有改善结构稳定性的γ，γ'，NBC型多相金属体系

    公开(公告)号：US4318756A

    公开(公告)日：1982-03-09

    申请号：US93118

    申请日：1979-11-13

    申请人： Herve Bibring ,  Tasadduq Khan ,  Maurice Rabinovitch ,  Jean-Francois Stohr ,  Jean-Michel Hauser

    发明人： Herve Bibring ,  Tasadduq Khan ,  Maurice Rabinovitch ,  Jean-Francois Stohr ,  Jean-Michel Hauser

    IPC分类号： C22C19/05 ,  C22C49/08 ,  C30B21/02

    CPC分类号： C22C49/08 ,  C30B21/02 ,  Y10T428/12465

    摘要： A refractory composite material has a nickel-based matrix, containing chromium, hardened by elements such as W in solid solution and hardened by precipitation of a .gamma.'(Ni,Xi).sub.3 (Al,Yi) phase, Xi representing elements different from Ni and Yi elements different from Al which the matrix may contain and which are respectively substituted for Ni and Al atoms in the formation of the .gamma.' precipitate, and with aligned monocrystalline fibers of a transition metal monocarbide, preferably niobium monocarbide, imbedded in said matrix, as obtained by unidirectional solidification. The chromium proportion of the material is maintained at a value lower than that from which the chromium carbide of formula Cr.sub.23 C.sub.6 is formed in the matrix at the expense of the niobium carbide of the reinforcement fibers at the operating temperatures foreseen for the material.

    摘要翻译： 难熔复合材料具有含有铬的镍基基质，固溶W中的元素固化并通过γ'（Ni，Xi）3（Al，Yi）相沉淀而硬化，表示不同于Ni的元素 和不同于Al的元素，其中基体可以含有，并且分别代替形成γ'沉淀物中的Ni和Al原子，并且嵌入在所述基质中的过渡金属单碳化物，优选铌单碳化物的排列单晶纤维， 如通过单向凝固获得的。 材料的铬比例保持在低于在基体中形成式Cr23C6的碳化铬的值，该值是在材料预期的工作温度下以增强纤维的碳化铌为代价的。

    Nickel based monocrystalline superalloy, method of heat treating said alloy, and parts made therefrom
    6.
    发明授权
    Nickel based monocrystalline superalloy, method of heat treating said alloy, and parts made therefrom 失效
    镍基单晶超合金，所述合金的热处理方法以及由其制成的部件

    公开(公告)号：US4923525A

    公开(公告)日：1990-05-08

    申请号：US363285

    申请日：1982-03-29

    申请人： Tasadduq Khan ,  Pierre Caron

    发明人： Tasadduq Khan ,  Pierre Caron

    IPC分类号： C30B29/52 ,  C22C19/05 ,  C22F1/00 ,  C22F1/10 ,  C30B11/00 ,  C30B29/10 ,  C30B33/00

    CPC分类号： C30B11/00 ,  C22C19/057 ,  C30B29/52 ,  C30B33/00

    摘要： A monocrystalline superalloy with a nickel based matrix and particularly intended for the manufacture of turbine blades, has the following composition, by weight: Al=5.4% to 6.2%; Co=4% to 7%; Cr=6% to 9%; Mo=0% to 2.5%; Ta=5.5% to 8%; Ti=0% to 1%; Wt32 7% to 9%; and Ni=balance to 100%.The invention also provides a method of improving the alloy's resistance to creep, in which the Ni.sub.3 Al type .gamma.' phase is put completely into solution at a first temperature, and then the .gamma.' phase is precipitated into the .gamma. solid solution at a temperature greater than 1000.degree. C. This treatment considerably increases the alloy's resistance to creep over a wide range of temperatures.

    摘要翻译： 具有镍基基质并且特别用于制造涡轮叶片的单晶超合金具有以下重量比的组成：Al = 5.4％至6.2％; Co = 4％〜7％; Cr = 6％〜9％; Mo = 0％〜2.5％ Ta = 5.5％〜8％ Ti = 0％〜1％ Wt32 7％〜9％; Ni =平衡至100％。 本发明还提供了一种改善合金耐蠕变性的方法，其中Ni3Al型γ相在第一温度下完全溶解，然后γ'相在大于 1000℃。这种处理显着增加了合金在宽温度范围内的抗蠕变性。

    Niobium or tantalum based high specific strength inter metallic compounds and alloys
    7.
    发明授权
    Niobium or tantalum based high specific strength inter metallic compounds and alloys 失效
    铌或钽基高比强度金属间化合物和合金

    公开(公告)号：US5486242A

    公开(公告)日：1996-01-23

    申请号：US440659

    申请日：1995-05-15

    申请人： Shigehisa Naka ,  Tasadduq Khan ,  Andre Walder ,  Michel Marty ,  Christophe Delaunay ,  Pierre Thevenin

    发明人： Shigehisa Naka ,  Tasadduq Khan ,  Andre Walder ,  Michel Marty ,  Christophe Delaunay ,  Pierre Thevenin

    IPC分类号： C22C27/02 ,  C22C30/00

    CPC分类号： C22C27/02 ,  C22C30/00

    摘要： Tantalum-based and niobium-based alloys made up entirely of a crystalline medium exhibiting a substantially continuous centered cubic structure, comprising an intermetallic compound of formula Ti.sub.2 AlMo, and having the following compositions on an atomic basis:______________________________________ Ta + Cr 20 to 35% Cr 0 to 5% Ti 20 to 40% Al 8 to 20% Mo 8 to 20%, ______________________________________ wherein the concentration of Ta is less than 30%; and______________________________________ Nb + Cr 20 to 60% Cr 0 to 5% Ti 20 to 40% Al 8 to 20% Mo 8 to 20%. ______________________________________ .

    摘要翻译： 完全由表现出基本上连续的中心立方结构的结晶介质构成的钽基和铌基合金，其包含式Ti2AlMo的金属间化合物，并且具有以下原子基础的以下组成：-Ta + Cr 20至35％ - Cr 0〜5％-Ti 20〜40％-Al 8〜20％-Mo 8〜20％， - 其中Ta的浓度小于30％ 和-Nb + Cr 20至60％-Cr 0至5％-Ti 20至40％-Al 8至20％-M 8至20％。 - 。

    Nickel-based monocrystalline superalloy with improved oxidation resistance and method of production
    9.
    发明授权
    Nickel-based monocrystalline superalloy with improved oxidation resistance and method of production 失效
    镍基单晶超耐热合金具有改善的抗氧化性和生产方法

    公开(公告)号：US5435861A

    公开(公告)日：1995-07-25

    申请号：US103172

    申请日：1993-08-06

    申请人： Tasadduq Khan ,  Pierre Caron

    发明人： Tasadduq Khan ,  Pierre Caron

    IPC分类号： C22C19/05

    CPC分类号： C22C19/057

    摘要： A nickel-based monocrystalline superalloy suitable for turbine engine blades is obtained by adding to the alloy at least one element chosen from erbium and silicon, at a concentration by weight of 50 to 500 ppm for Er and of 500 to 1000 ppm for Si and, optionally, hafnium at a concentration by weight of 500 to 1000 ppm.

    摘要翻译： 适用于涡轮发动机叶片的镍基单晶超合金通过向合金中添加至少一种选自铒和硅的元素，其浓度为呃为50至500ppm，对于Si为500至1000ppm， 任选地，浓度为500至1000ppm的铪。