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    System and method to apply multiple thermal treatments to workpiece and related turbomachine components
    1.
    发明授权
    System and method to apply multiple thermal treatments to workpiece and related turbomachine components 有权

    公开(公告)号：US11242588B2

    公开(公告)日：2022-02-08

    申请号：US16712130

    申请日：2019-12-12

    Applicant: General Electric Company

    Inventor： Michael Douglas Arnett ,  Jon Conrad Schaeffer ,  Christopher Raymond Hanslits

    IPC: C22F1/10 ,  C22F1/02

    Abstract: Embodiments of the disclosure provide a system including: an enclosure having an interior sized to enclose and the workpiece and form a vacuum and pressurized atmosphere within the interior. A plurality of thermal applicators may be in thermal communication with first and second portions of the interior. First and second thermal applicators may independently heat and cool the first and second portions of the interior. The first thermal applicator may apply a first thermal treatment to a first portion of the workpiece in the first portion of the interior. A second thermal applicator may apply a second thermal treatment to a second portion of the workpiece in the second portion of the interior independently of the first thermal treatment.

    Cast nickel-base alloys including iron
    8.
    发明授权
    Cast nickel-base alloys including iron 有权

    公开(公告)号：US10266926B2

    公开(公告)日：2019-04-23

    申请号：US13868481

    申请日：2013-04-23

    Applicant: GENERAL ELECTRIC COMPANY

    Inventor： Ganjiang Feng ,  Jon Conrad Schaeffer ,  Michael Douglas Arnett

    IPC: C22C19/05 ,  C22C30/00

    Abstract: A cast nickel-base superalloy that includes iron added substitutionally for nickel. The cast nickel base superalloy comprises, in weight percent about 1-6% iron, about 7.5-19.1% cobalt, about 7-22.5% chromium, about 1.2-6.2% aluminum, optionally up to about 5% titanium, optionally up to about 6.5% tantalum, optionally up to about 1% Nb, about 2-6% W, optionally up to about 3% Re, optionally up to about 4% Mo, about 0.05-0.18% C, optionally up to about 0.15% Hf, about 0.004-0.015 B, optionally up to about 0.1% Zr, and the balance Ni and incidental impurities. The superalloy is characterized by a γ′ solvus temperature that is within 5% of the γ′ solvus temperature of the superalloy that does not include 1-6% Fe and a mole fraction of γ′ that is within 15% of the mole fraction of the superalloy that does not include 1-6% Fe.

    Modified articles, coated articles, and modified alloys
    9.
    发明授权
    Modified articles, coated articles, and modified alloys 有权

    公开(公告)号：US10253396B2

    公开(公告)日：2019-04-09

    申请号：US15255383

    申请日：2016-09-02

    Applicant: GENERAL ELECTRIC COMPANY

    Inventor： Jon Conrad Schaeffer ,  Shan Liu ,  Martin M. Morra ,  Michael Douglas Arnett

    IPC: C22C19/05 ,  F01D5/28 ,  F01D9/04 ,  F01D25/00 ,  C22C19/03 ,  C22C30/00 ,  C22C45/00 ,  C22C45/04 ,  C22F1/10

    Abstract: A modified alloy is disclosed including a base alloy composition and an additive gamma prime antioxidant. The base alloy composition includes a concentration of a gamma prime antioxidant less than an effective concentration of the gamma prime antioxidant. The additive gamma prime antioxidant is intermixed with the base alloy composition to form the modified alloy, preferentially segregating to a gamma prime phase of the modified alloy and increasing the concentration of the gamma prime antioxidant to be at least the effective concentration of the gamma prime antioxidant. The effective concentration imparts reduced oxidation susceptibility of the gamma prime phase. An article is disclosed including the modified alloy. A coated article is disclosed including a coating disposed on a surface of an article having the base alloy composition. The coated article includes a reduced stress accelerated gamma prime oxidation static crack growth susceptibility in comparison with the base alloy composition.

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