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    METHODS FOR PREPARING SUPERALLOY ARTICLES AND RELATED ARTICLES
    4.
    发明公开
    METHODS FOR PREPARING SUPERALLOY ARTICLES AND RELATED ARTICLES 审中-公开
    制备超合金制品的方法和相关物品

    公开(公告)号：EP3263722A1

    公开(公告)日：2018-01-03

    申请号：EP17178125.5

    申请日：2017-06-27

    申请人： General Electric Company

    发明人： DETOR, Andrew Joseph ,  DIDOMIZIO, Richard ,  HANLON, Timothy ,  SHEN, Chen ,  ZHOU, Ning

    IPC分类号： C22C19/03 ,  C22C19/05 ,  C22F1/10

    CPC分类号： C22F1/10 ,  C22C19/03 ,  C22C19/05 ,  C22C19/055 ,  C22C19/056

    摘要： A method for preparing an improved article including a nickel-based superalloy is presented. The method includes heat-treating a workpiece 102 including a nickel-based superalloy at a temperature above the gamma-prime solvus temperature of the nickel-based superalloy and cooling the heat-treated workpiece 104 with a cooling rate less than 50 degrees Fahrenheit/minute from the temperature above the gamma-prime solvus temperature of the nickel-based superalloy so as to obtain a cooled workpiece. The cooled workpiece includes a coprecipitate of a gamma-prime phase and a gamma-double-prime phase, wherein the gamma-prime phase of the coprecipitate has an average particle size less than 250 nanometers. An article having a minimum dimension greater than 6 inches is also presented. The article includes a material having a coprecipitate of a gamma-prime phase and a gamma-double-prime phase, wherein the gamma-prime phase of the coprecipitate has an average particle size less than 250 nanometers.

    摘要翻译： 介绍了一种制备包括镍基超级合金的改进制品的方法。 该方法包括在高于镍基超级合金的γ-固溶线温度的温度下热处理包括镍基超级合金的工件102，并以小于50华氏度/分钟的冷却速率冷却热处理工件104 从高于镍基超级合金的γ-固溶线温度的温度，以获得冷却的工件。 冷却的工件包括γ-相和γ-双重相的共沉淀物，其中共沉淀物的γ-相的平均粒度小于250纳米。 还展示了具有大于6英寸的最小尺寸的物品。 该制品包括具有γ-相和γ-双重相的共沉淀物的材料，其中共沉淀物的γ-相的平均粒度小于250纳米。

    SUPERALLOYS AND COMPONENTS FORMED THEREOF
    6.
    发明公开
    SUPERALLOYS AND COMPONENTS FORMED THEREOF 有权
    SUPERLEGIERUNGEN UND DARAUS GEFORMTE KOMPONENTEN

    公开(公告)号：EP3024957A1

    公开(公告)日：2016-06-01

    申请号：EP14762119.7

    申请日：2014-02-20

    申请人： General Electric Company

    发明人： MOURER, David Paul ,  DIDOMIZIO, Richard ,  HANLON, Timothy ,  WEI, Daniel Yeuching ,  WESSMAN, Andrew Ezekiel ,  BAIN, Kenneth Rees ,  POWELL, Andrew Martin

    IPC分类号： C22C19/05 ,  C22F1/10

    CPC分类号： C22C19/057 ,  C22C19/056 ,  C22F1/10

    摘要： A gamma prime nickel-base superalloy and components formed therefrom that exhibit improved high-temperature dwell capabilities, including creep and hold time fatigue crack growth behavior. A particular example of a component is a powder metallurgy turbine disk of a gas turbine engine. The gamma-prime nickel-base superalloy contains, by weight: 16.0 to 30.0% cobalt; 9.5 to 12.5% chromium; 4.0 to 6.0% tantalum; 2.0 to 4.0% aluminum; 2.0 to 3.4% titanium; 3.0 to 6.0% tungsten; 1.0 to 4.0% molybdenum; 1.5 to 3.5% niobium; up to 1.0% hafnium; 0.02 to 0.20% carbon; 0.01 to 0.05% boron; 0.02 to 0.10% zirconium; the balance essentially nickel and impurities. The superalloy has a W+Nb-Cr value of at least -6, is free of observable amounts of sigma and eta phases, and exhibits a time to 0.2% creep at 1300°F and 100 ksi of at least 1000 hours.

    摘要翻译： 一种伽马级镍基超级合金以及由此形成的元件具有改善的高温停留能力，包括蠕变和保持时间疲劳裂纹扩展行为。 组件的一个具体实例是燃气涡轮发动机的粉末冶金涡轮盘。 γ型镍基超合金含有：16.0〜30.0％的钴; 9.5〜12.5％铬; 4.0〜6.0％的钽; 2.0〜4.0％铝; 2.0〜3.4％钛; 3.0〜6.0％钨; 1.0〜4.0％的钼; 1.5〜3.5％的铌; 高达1.0％的铪; 0.02〜0.20％的碳; 0.01〜0.05％硼; 0.02〜0.10％的锆; 余量基本上是镍和杂质。 超合金具有至少为-6的W + Nb-Cr值，没有可观察到的σ和η相的量，并且在1300°F和100ksi至少1000小时时表现出0.2％的蠕变时间。