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    Minimization of quench cracking of superalloys
    2.
    发明授权
    Minimization of quench cracking of superalloys 失效
    超级合金淬火开裂的最小化

    公开(公告)号：US5269857A

    公开(公告)日：1993-12-14

    申请号：US860836

    申请日：1992-03-31

    申请人： Swami Ganesh ,  William R. Butts ,  Raymond D. Rife ,  Thomas J. Tomlinson

    发明人： Swami Ganesh ,  William R. Butts ,  Raymond D. Rife ,  Thomas J. Tomlinson

    IPC分类号： C21D1/63 ,  C21D1/70 ,  C22F1/10 ,  B23K20/00 ,  B23K3/00 ,  C22C19/00

    CPC分类号： C21D1/70 ,  C22F1/10 ,  C21D1/63 ,  Y10T428/12944

    摘要： A method for preparing a heat-treated article made of a superalloy, such as a turbine disk preform, includes furnishing an article made of a superalloy that is prone to quench cracking, usually after forging the article, and thereafter covering at least a portion of the article with a quench cladding having a thickness of at least about 1/8 inch so that the quench cladding is in direct thermal contact with the article. The quench cladding may be conveniently applied to the article by thermal spraying, which produces direct thermal contact between the quench cladding and the article, or by placing the article into the envelope of the quench cladding material and hot isostatically pressing to achieve a direct thermal contact between the envelope and the article. After the quench cladding is in place, the clad article is heated to elevated temperature and quenched from the elevated temperature to a lower temperature, and the envelope is removed. By reducing the thermal gradient at the surface of the article and by reducing the oxidation embrittlement of the surface of the article, the quench cladding aids in reducing the incidence and severity of quench cracks. The quench cladding may be applied over the entire surface of the article, or only over the most crack-prone regions.

    摘要翻译： 制备由诸如涡轮盘预制件的超级合金制成的热处理制品的方法包括提供由通常在锻造制品之后容易发生淬火裂纹的超级合金制成的制品，然后将至少一部分 具有淬火包层的制品具有至少约1/8英寸的厚度，使得淬火包层与制品直接热接触。 淬火包层可以通过热喷涂方便地施加到制品上，其在淬火包层和制品之间产生直接热接触，或者通过将制品放置在淬火包层材料的外壳中并进行热等静压以实现直接热接触 在信封和文章之间。 在淬火包层就位之后，将复合制品加热到升高的温度，并从升高的温度淬火到较低的温度，并且去除外壳。 通过降低制品表面的热梯度并减少制品表面的氧化脆化，淬火包层有助于减少淬火裂纹的发生和严重性。 淬火包层可以施加在制品的整个表面上，或仅在最易裂纹的区域上。

    Method of applying environmental and bond coatings to turbine flowpath parts
    3.
    发明授权
    Method of applying environmental and bond coatings to turbine flowpath parts 有权
    将环境和粘合剂涂层应用于涡轮流道部件的方法

    公开(公告)号：US06887529B2

    公开(公告)日：2005-05-03

    申请号：US10405727

    申请日：2003-04-02

    申请人： Karl Lee Borneman ,  Thomas J. Tomlinson ,  Raymond Heldorn

    发明人： Karl Lee Borneman ,  Thomas J. Tomlinson ,  Raymond Heldorn

    IPC分类号： F01D5/28 ,  C23C4/02 ,  C23C4/12 ,  C23C4/18 ,  F02C7/00 ,  F02C7/24 ,  F02C7/28

    CPC分类号： C23C4/18 ,  C23C4/02 ,  C23C4/12

    摘要： A method for coating an article such as a turbine engine shroud with an environmental or bond coating, such as a MCrAlY composition, to produce a surface finish suitable for machining to predetermined dimensions and specifications. The method of applying an environmental or bond coating uses a thermal spray process such as hyper velocity oxygen fuel (“HVOF”) to produce a thick and reasonably uniform coating which can be machined to desired dimensions while still providing key quality characteristics required to protect the coated parts in a high temperature, oxidative and corrosive atmosphere and permitting application of long life thermal barrier topcoats.

    摘要翻译： 一种用诸如MCrAlY组合物的环境或粘合涂层涂覆诸如涡轮发动机罩的物品的方法，以产生适合于预定尺寸和规格的机械加工的表面光洁度。 施加环境或粘合涂层的方法使用热喷涂工艺，例如高速氧气燃料（“HVOF”）来产生厚而合理的均匀的涂层，其可以被加工成所需的尺寸，同时仍然提供保护所需的关键质量特性 涂层部件处于高温，氧化和腐蚀性气氛，并允许使用长寿命的热障面漆。