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公开(公告)号：US5482789A
公开(公告)日：1996-01-09
申请号：US176613
申请日：1994-01-03
CPC分类号： C22C19/057 , C30B11/00 , C30B29/52 , Y10T428/1275 , Y10T428/12875 , Y10T428/12944
摘要： The present invention provides a nickel base superalloy having an improved combination of stress rupture life and microstructural stability with respect to the formation of TCP phases. A unique feature is the specific combination of the content of elements consisting of Al, Ti and W in a second range defined by their sum in a nickel base superalloy having high contents of rhenium, in excess of 1.3 atomic percent (about 4.0 weight percent) to lower the propensity for TCP phase formation and thus render the alloy more stable at high temperatures. The interaction of Ru with the remaining elements to modify the refractory element phase partitioning provides unique capabilities, causing elements to partition to the gamma phase or the gamma prime phase in a reverse direction than normally experienced in Ni-base superalloys. These Ni-base superalloys are termed Ru-containing Reverse Partitioning Ni-base Superalloys. The composition of these Reverse Partitioning Ni-base superalloys is in the range, in atomic percent, of 1.3-3% Re, 2.0-3.7% Ta, 4.0-18.0% Co, 0-0.2% Hf, 0-0.3% C, 0-0.05% B, 0-0.03% Y, 0-2.0% Mo, 1.5-7.2% Cr, 0-0.3% Cb, 12.0-15.0% Al, 0-1.3% Ti, 1.0-2.5% W, in combination with 0.25-4.0 Ru and the balance Ni and incidental impurities.
摘要翻译： 本发明提供了一种镍基超级合金，其相对于TCP相的形成具有改进的应力断裂寿命和微结构稳定性的组合。 一个独特的特征是由Al，Ti和W组成的元素的含量在第二范围内的特定组合，该第二范围由它们的总和在具有高含量的铼的镍基超级合金中限定，超过1.3原子％（约4.0重量％）， 以降低TCP相形成的倾向，从而使合金在高温下更稳定。 Ru与剩余元素的相互作用以改变难熔元素相分配提供独特的能力，使得元素在与Ni基超级合金中通常经历的相反方向上分配到γ相或γ'相。 这些Ni基超合金称为含Ru反向分选Ni基超合金。 这些反向分选的Ni基超级合金的组成在原子百分比范围内在1.3-3％Re，2.0-3.7％Ta，4.0-18.0％Co，0-0.2％Hf，0-0.3％C， 0-0.05％B，0-0.03％Y，0-2.0％Mo，1.5-7.2％Cr，0-0.3％Cb，12.0-15.0％Al，0-1.3％Ti，1.0-2.5％W，组合 用0.25-4.0 Ru，余量为Ni和杂质。
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公开(公告)号：US5151249A
公开(公告)日：1992-09-29
申请号：US459400
申请日：1989-12-29
CPC分类号： C22F1/10 , C22C19/057 , C30B11/00 , C30B29/52
摘要： A nickel-based superalloy consisting essentially of, in weight percent, from about 4 to about 5 percent chromium, from about 11 to about 14 percent cobalt, from about 4 to about 8 percent tungsten, from about 6 to about 10 percent tantalum, from about 5 to about 7 percent aluminum, from about 5.5 to about 8 percent rhenium, from about 0 to about 0.50 percent hafnium, from about 0 to about 0.07 percent carbon, from 0 to about 0.01 percent boron, from 0 to about 0.030 percent yttrium, from 0 to about 6 percent ruthenium, from 0 to about 1 percent molybdenum, from 0 to about 1 percent niobium, and the balance essentially nickel. Articles made from the superalloy of the invention are especially useful when cast as single crystal airfoils for use in advanced gas turbine engines.
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3.发明授权Nickel-base superalloy and article with high temperature strength and improved stability 失效镍基超合金和具有高温强度和稳定性提高的制品
公开(公告)号：US5270123A
公开(公告)日：1993-12-14
申请号：US846643
申请日：1992-03-05
CPC分类号： C22F1/10 , C22C19/057 , Y10T428/1275 , Y10T428/12875 , Y10T428/12944
摘要： A nickel base superalloy capable of being made into a single crystal article is provided with high temperature strength and improved stability by limiting the Presence of an undesirable SRZ constituent. Significant to the control of formation of such undesirable constituents is the control of the amount of Re in the alloy in combination with elements such as Al, Cr, Ta, Mo, Co and W. A solution heat treatment is provided for additional control.
摘要翻译： 能够制成单晶制品的镍基超级合金通过限制不期望的SRZ组分的存在而具有高温强度和改进的稳定性。 控制形成这种不良成分的重要性是控制合金中的Re与Al，Cr，Ta，Mo，Co和W等元素的组合。提供固溶热处理用于额外的控制。
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4.发明授权Nickel-base superalloy and article with high temperature strength and improved stability 失效镍基超合金和具有高温强度和稳定性提高的制品
公开(公告)号：US5455120A
公开(公告)日：1995-10-03
申请号：US100010
申请日：1993-07-29
CPC分类号： C22C19/057 , C22F1/10 , Y10T428/1275 , Y10T428/12875 , Y10T428/12944
摘要： A nickel base superalloy capable of being made into a single crystal article is provided with high temperature strength and improved stability by limiting the presence of an undesirable SRZ constituent. Significant to the control of formation of such undesirable constituents is the control of the amount of Re in the alloy in combination with elements such as Al, Cr, Ta, Mo, Co and W. A solution heat treatment is provided for additional control.
摘要翻译： 能够制成单晶制品的镍基超级合金通过限制不期望的SRZ组分的存在而具有高温强度和改善的稳定性。 控制形成这种不良成分的重要性是控制合金中的Re与Al，Cr，Ta，Mo，Co和W等元素的组合。提供固溶热处理用于额外的控制。
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5.发明授权Substrate stabilization of superalloys protected by an aluminum-rich coating 有权由富含铝的涂层保护的超级合金的底物稳定性公开(公告)号：US06447932B1
公开(公告)日：2002-09-10
申请号：US09537647
申请日：2000-03-29
IPC分类号： C23C824
CPC分类号： C23C12/00 , C23C28/00 , Y10T428/12458 , Y10T428/12576 , Y10T428/1259
摘要： A coating system and method for forming the coating system on an article designed for use in a hostile environment, such as the superalloy turbine, combustor and augmentor components of a gas turbine engine. The method employs a nitrided zone in the surface of the superalloy substrate to inhibit the formation of deleterious topologically-close packed (TCP) phases in the substrate when protected by an aluminum-rich coating and optionally a thermal insulating ceramic layer. Superalloys of particular interest are those containing significant levels of TCP phase-forming elements, such as tungsten, rhenium, tantalum, molybdenum and chromium.
摘要翻译： 一种用于在恶劣环境中使用的物品上形成涂层系统的涂覆系统和方法，例如燃气涡轮发动机的超级合金涡轮机，燃烧器和增压器部件。 该方法在超合金基底的表面中使用氮化区，以在由富铝涂层和任选的绝热陶瓷层保护时抑制衬底中有害的拓扑密封（TCP）相的形成。 特别感兴趣的超级合金是含有显着水平的TCP相形成元素如钨，铼，钽，钼和铬的那些。
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6.发明授权Cast columnar grain hollow nickel base alloy articles and alloy and heat treatment for making 失效铸造柱状颗粒空心镍基合金制品和合金和热处理制造
公开(公告)号：US5173255A
公开(公告)日：1992-12-22
申请号：US686882
申请日：1991-04-17
申请人： Earl W. Ross , Kevin S. O'Hara
发明人： Earl W. Ross , Kevin S. O'Hara
CPC分类号： C22C19/057 , C22F1/10
摘要： One form of an improved cast, hollow, columnar grain nickel base alloy article is provided with outstanding elevated temperature stability as represented by oxidation resistance, an improved combination of longitudinal and transverse stress rupture properties, and a thin wall of less than about 0.035 inch, substantially free of cracks. Described is a heat treatment in combination with an alloy for providing such an article.
摘要翻译： 改进的铸造中空圆柱状镍基合金制品的一种形式具有突出的高温稳定性，如抗氧化性，纵向和横向应力破裂性能的改进组合以及小于约0.035英寸的薄壁， 基本上没有裂缝。 描述了与用于提供这种制品的合金的热处理。
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公开(公告)号：US5891267A
公开(公告)日：1999-04-06
申请号：US783335
申请日：1997-01-16
申请人： Jon C. Schaeffer , Kevin S. O'Hara
发明人： Jon C. Schaeffer , Kevin S. O'Hara
CPC分类号： C23C28/042 , C23C28/00 , C23C28/044
摘要： A thermal barrier coating system and a method for forming the coating system on an article designed for use in a hostile thermal environment, such as superalloy turbine, combustor and augmentor components of a gas turbine engine. The coating system includes a carburized zone at the surface of a component on which a thermal barrier coating system is to be formed. An aluminum-rich bond coat is then formed on the carburized surface, followed by oxidation of the bond coat to form an aluminum oxide layer. A thermal insulating ceramic layer is then formed on the oxide layer, so as to be chemically bonded thereto. According to the invention, appropriately carburizing the surface of a component serves to form carbides that tie up refractory metals present in the underlying superalloy substrate of the component, and thereby prevents the detrimental effects of these metals on the bond coat-oxide layer interface. The benefit of the carburized zone is particularly notable where the component is a superalloy containing relatively high levels of one or more refractory metals, such as tantalum, tungsten, molybdenum, rhenium, titanium, chromium, hafnium and zirconium.
摘要翻译： 一种热障涂层系统和在设计用于恶劣热环境中的物品上形成涂层系统的方法，例如燃气轮机的超级合金涡轮机，燃烧器和增压器部件。 涂层系统包括在其上将要形成热障涂层系统的部件的表面处的渗碳区域。 然后在渗碳表面上形成富铝的粘结涂层，然后氧化粘结涂层以形成氧化铝层。 然后在氧化物层上形成绝热陶瓷层，以便与其化学键合。 根据本发明，组分表面的适当渗碳用于形成结合组分的下层超耐热合金基底中存在的难熔金属的碳化物，从而防止这些金属对粘结涂层 - 氧化物层界面的不利影响。 渗碳区的好处是特别值得注意的是，组分是含有相对高含量的一种或多种难熔金属如钽，钨，钼，铼，钛，铬，铪和锆的高合金。
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公开(公告)号：US5188457A
公开(公告)日：1993-02-23
申请号：US849724
申请日：1992-03-11
申请人： Kevin S. O'Hara
发明人： Kevin S. O'Hara
摘要： A method for determining the maximum temperature attained by an article formed of a nickel-based superalloy includes furnishing an article made of a nickel-based superalloy having a gamma/gamma-prime structure at intermediate temperatures and a single phase structure at high temperatures and characterized by a predetermined continuous relation between equilibrium volume fraction of gamma prime phase present and temperature over a transition temperature range. The article is heated with a temperature profile including a maximum temperature within the transition temperature range, and thereafter cooled to ambient temperature to produce a distribution of coarse gamma-prime particles and fine gamma-prime particles in a gamma matrix. The fraction of coarse gamma-prime particles present in the article is measured, and compared with the predetermined continuous relation between equilibrium volume fraction of gamma-prime phase as a function of temperature, to determine a maximum temperature reached by the article. In one useful form, the material having the gamma/gamma-prime structure is provided as a temperature marker that is fixed to the article to be measured, as in the form of a pin or a coating.
摘要翻译： 用于确定由镍基超级合金制成的制品获得的最高温度的方法包括：在中温下提供由具有γ/γ'结构的镍基超级合金制成的制品，并在高温下具有单相结构， 通过存在的γ'相平衡体积分数与转变温度范围内的温度之间的预定连续关系。 将该制品在包括转变温度范围内的最高温度的温度曲线下加热，然后冷却至环境温度，以在γ基质中产生粗γ'粒子和细γ粒子粒子的分布。 测量制品中存在的粗γ粒子颗粒的分数，并将其与作为温度的函数的γ相相平衡体积分数之间的预定连续关系进行比较，以确定制品达到的最大温度。 在一种有用的形式中，具有γ/γ-原子结构的材料被提供为固定到要测量的制品的温度标记，如针或涂层的形式。
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公开(公告)号：US4345950A
公开(公告)日：1982-08-24
申请号：US142527
申请日：1980-04-21
申请人： Kevin S. O'Hara
发明人： Kevin S. O'Hara
CPC分类号： C22F1/10
摘要： A composite grained cast article is provided from a superalloy casting in the single grained condition, in one form, by mechanically working a portion of the article intended to operate at a lower temperature of up to about 1300.degree. F. The mechanically worked portion is then recrystallized by heating to provide a multi-grained portion. In another form, the multi-grained portion is provided by selective use of grain nucleation material during solidification.
摘要翻译： 复合颗粒铸造制品是通过在单一颗粒状态的超级合金铸件中以一种形式，通过机械加工一部分制品，以在较高的温度高达约1300°F下工作的。然后机械加工的部分 通过加热重结晶以提供多晶粒部分。 在另一种形式中，通过在凝固期间选择性使用晶粒成核材料来提供多晶粒部分。
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