EP2788518A1 - Rhenium-free or rhenium-reduced nickel-base superalloy - Google Patents

Rhenium-free or rhenium-reduced nickel-base superalloy

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Publication number
EP2788518A1
EP2788518A1 EP12787636.5A EP12787636A EP2788518A1 EP 2788518 A1 EP2788518 A1 EP 2788518A1 EP 12787636 A EP12787636 A EP 12787636A EP 2788518 A1 EP2788518 A1 EP 2788518A1
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EP
European Patent Office
Prior art keywords
content
nickel
weight
rhenium
titanium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12787636.5A
Other languages
German (de)
French (fr)
Other versions
EP2788518B1 (en
Inventor
Robert F. Singer
Ernst Affeldt
Michael Weiss
Thomas GÖHLER
Ralf RETTIG
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MTU Aero Engines AG
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MTU Aero Engines GmbH
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Publication of EP2788518A1 publication Critical patent/EP2788518A1/en
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Publication of EP2788518B1 publication Critical patent/EP2788518B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/03—Alloys based on nickel or cobalt based on nickel
    • C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
    • C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
    • C22C19/057—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being less 10%
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/10—Metals, alloys or intermetallic compounds
    • F05D2300/17—Alloys
    • F05D2300/173—Aluminium alloys, e.g. AlCuMgPb
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/10—Metals, alloys or intermetallic compounds
    • F05D2300/17—Alloys
    • F05D2300/174—Titanium alloys, e.g. TiAl
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/10—Metals, alloys or intermetallic compounds
    • F05D2300/17—Alloys
    • F05D2300/175—Superalloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/10—Metals, alloys or intermetallic compounds
    • F05D2300/17—Alloys
    • F05D2300/177—Ni - Si alloys

Abstract

The present invention relates to a nickel-base superalloy comprising aluminium, cobalt, chromium, molybdenum, tantalum, titanium and tungsten, in addition to nickel, as alloy constituents, wherein rhenium can additionally be contained and the rhenium content is less than or equal to 2 wt.% and wherein the titanium content is greater than or equal to 1.5 wt.%. The invention further relates to components made of the nickel-base superalloy.

Description

Rhenium-freie oder Rhenium-reduzierte Nickel-Basis-Superlegierung  Rhenium-free or rhenium-reduced nickel-based superalloy
HINTERGRUND DER ERFINDUNG GEBIET DER ERFINDUNG BACKGROUND OF THE INVENTION FIELD OF THE INVENTION
Die vorliegende Erfindung betrifft eine Nickel-Basis-Superlegierung mit geringem oder keinem Rheniumgehalt. The present invention relates to a nickel-base superalloy with little or no rhenium content.
STAND DER TECHNIK STATE OF THE ART
In Gasturbinen, wie stationären Gastturbinen zur Stromerzeugung oder Flugtriebwerken, herrschen harte Einsatzbedingungen für die eingesetzten Werkstoffe, da die Werkstoffe, insbesondere für die Laufschaufeln hohen mechanischen Belastungen und zugleich hohen Temperaturen ausgesetzt sind, sodass neben hohen Festigkeiten eine ausreichend große Phasenstabilität sowie Kriech- und Oxidationsbeständigkeit des Werkstoffs erforderlich ist. In gas turbines, such as stationary gas turbines for power generation or aircraft engines, there are harsh operating conditions for the materials used, since the materials, in particular for the blades high mechanical loads and high temperatures are exposed at the same time so high strength in addition to sufficiently high phase stability and creep and oxidation resistance of the material is required.
Um diesen Anforderungen gerecht zu werden, werden beispielsweise Nickel-Basis- Superlegierungen eingesetzt, die als Einkristalle oder als gerichtet erstarrte Legierungen zum Einsatz kommen können. Diese Legierungen weisen durch ihre Legierungsbestandteile aufgrund der Mischkristall- und/oder Ausscheidungs- oder Teilchenhärtung eine hohe Festigkeit auf. Darüber hinaus sind derartige Nickel-Basis-Superlegierungen dahingehend optimiert, dass die Teilchenhärtung durch die Ausscheidung von sogenannten γ'-Phasen auch bei hohen Temperaturen und langen Einsatzzeiten erhalten bleibt. To meet these requirements, for example, nickel-base superalloys are used, which can be used as single crystals or as directionally solidified alloys. These alloys have high strength due to their alloying components due to solid solution and / or precipitation or particle hardening. In addition, such nickel-based superalloys are optimized so that the particle hardening by the excretion of so-called γ 'phases is maintained even at high temperatures and long periods of use.
Als Beispiele für derartige Legierungen können Nickel-Basis-Superlegierungen, wie CMSX-4, PWA-1484 oder Rene N5 genannt werden. Derartige Legierungen enthalten alle einen Rheniumanteil von mehr als 3 Gew.-%. As examples of such alloys may be mentioned nickel base superalloys such as CMSX-4, PWA-1484 or Rene N5. Such alloys all contain a rhenium content of more than 3% by weight.
Durch den hohen Rheniumanteil sind jedoch die Materialkosten sehr hoch, sodass es bereits Überlegungen gegeben hat, Nickel-Basis-Superlegierungen zu entwickeln, die einen geringen oder gar keinen Rheniumanteil aufweisen. Beispiele hierfür sind in der EP 2 305 848 AI, EP 2 218 798 A2, WO 2009/032578 und WO 2009/032579 beschrieben. OFFENBARUNG DER ERFINDUNG Due to the high rhenium content, however, the material costs are very high, so that it has already been considered to develop nickel-base superalloys that have little or no rhenium content. Examples of these are described in EP 2 305 848 A1, EP 2 218 798 A2, WO 2009/032578 and WO 2009/032579. DISCLOSURE OF THE INVENTION
AUFGABE DER ERFINDUNG OBJECT OF THE INVENTION
Obwohl im Stand der Technik bereits Nickel-Basis-Superlegierungen mit geringem oder gar keinem Rheniumanteil beschrieben sind, besteht weiterhin ein Bedarf an Rhenium-freien bzw. Rhenium-reduzierten Nickel-Basis-Superlegierungen, bei denen das Eigenschaftsprofil weiter optimiert ist. Insbesondere besteht ein Bedarf dahingehend, eine Legierung bereitzustellen, die auch bei hohen Temperaturen einen großen Volumenanteil an Ausscheidungen aufweist, um auch bei hohen Einsatztemperaturen die notwendige Festigkeit und insbesondere Kriechfestigkeit aufzuweisen. Although nickel-based superalloys with little or no rhenium content have already been described in the prior art, there continues to be a need for rhenium-free or rhenium-reduced nickel-based superalloys in which the property profile is further optimized. In particular, there is a need to provide an alloy which has a high volume fraction of precipitates even at high temperatures in order to have the necessary strength, and in particular creep resistance, even at high operating temperatures.
TECHNISCHE LÖSUNG TECHNICAL SOLUTION
Diese Aufgabe wird gelöst durch eine Nickel-Basis-Superlegierung gemäß dem Anspruch 1. Vorteilhafte Ausgestaltungen sind Gegenstand der abhängigen Ansprüche. This object is achieved by a nickel-based superalloy according to claim 1. Advantageous embodiments are the subject of the dependent claims.
Gemäß der vorliegenden Erfindung wird vorgeschlagen, bei einer Nickel-Basis-Superlegierung, die neben Nickel Aluminium, Kobalt, Chrom, Molybdän, Tantal, Titan und Wolfram als Legierungsbestandteile umfasst bei einem Rhenium- Gehalt kleiner oder gleich 2 Gew.-% den Titangehalt größer oder gleich 1,5 Gew.-%, insbesondere größer oder gleich 2 Gew.-% einzustellen. Wie sich überraschend gezeigt hat, kann mit einer derartigen Maßnahme der Rhenium-Gehalt abgesenkt werden, ohne dass es zu einer negativen Beeinflussung der Festigkeits- und Hochtemperatureigenschaften kommt. Insbesondere kann der Titan-Gehalt im Bereich von 1 ,5 bis 3 Gew.-% gewählt werden. According to the present invention, in a nickel base superalloy comprising, in addition to nickel, aluminum content, cobalt, chromium, molybdenum, tantalum, titanium and tungsten as alloying ingredients, at a rhenium content less than or equal to 2% by weight, the titanium content becomes larger or equal to 1.5 wt .-%, in particular greater than or equal to 2 wt .-% adjust. As has surprisingly been found, the rhenium content can be lowered with such a measure without there being any negative influence on the strength and high-temperature properties. In particular, the titanium content can be selected in the range of 1, 5 to 3 wt .-%.
Darüber hinaus kann bei Abwesenheit von Rhenium der Molybdän-Gehalt größer 3 Gew.-% eingestellt werden. In addition, in the absence of rhenium, the molybdenum content can be set greater than 3 wt .-%.
Darüber hinaus kann der Wolfram-Gehalt und/oder der Tantal-Gehalt kleiner oder gleich 8 Gew.-% sein. Der Wolfram-Gehalt kann insbesondere kleiner oder gleich 5 Gew.-% gewählt werden. Bei Abwesenheit von Molybdän und/oder niedrigen Titan-Gehalten von 1,5 bis 3 Gew.-% kann der Wolfram-Gehalt auch im Bereich von 6 bis 8 Gew.-% gewählt werden. In addition, the tungsten content and / or the tantalum content may be less than or equal to 8% by weight. In particular, the tungsten content may be less than or equal to 5% by weight. In the absence of molybdenum and / or low titanium contents of 1.5 to 3 wt%, the tungsten content may also be selected in the range of 6 to 8 wt%.
Der Tantal-Gehalt kann insbesondere kleiner oder gleich 7,5 Gew.-%, vorzugsweise kleiner oder gleich 5 Gew.-% gewählt werden. Bei Abwesenheit von Molybdän und/oder niedrigen Titan- Gehalten von 1,5 bis 3 Gew.-% kann der Tantal-Gehalt auch im Bereich von 6 bis 8 Gew.-% gewählt werden. The tantalum content may in particular be less than or equal to 7.5% by weight, preferably less than or equal to 5% by weight. In the absence of molybdenum and / or low titanium contents of 1.5 to 3 wt .-%, the tantalum content can also be selected in the range of 6 to 8 wt .-%.
Somit kann eine Nickel-Basis- Superlegierung einen Aluminium- Gehalt von 4 bis 6 Gew.-% einen Kobalt-Gehalt von 8 bis 10 Gew.-% einen Chrom-Gehalt von 5 bis 8 Gew.-%, einen Molybdän-Gehalt von 0 bis 5,5 Gew.-%, einen Tantal-Gehalt von 4 bis 8 Gew.-%, einen Rhenium- Gehalt von 0 bis 2 Gew.-%, einen Titan-Gehalt von 1,5 bis 5,5 Gew.-% und einen Wolfram- Gehalt von 3,5 bis 8 Gew.-% aufweisen, wobei der Rest Nickel und unvermeidbare Verunreinigungen sind. Thus, a nickel base superalloy may have an aluminum content of 4 to 6 wt%, a cobalt content of 8 to 10 wt%, a chromium content of 5 to 8 wt%, a molybdenum content of 0 to 5.5 wt .-%, a tantalum content of 4 to 8 wt .-%, a rhenium content of 0 to 2 wt .-%, a titanium content of 1.5 to 5.5 wt. % and have a tungsten content of 3.5 to 8 wt .-%, the remainder being nickel and unavoidable impurities.
Ferner kann eine Nickel-Basis- Superlegierung einen Aluminium-Gehalt von 4 bis 6 Gew.-% einen Kobalt-Gehalt von 8 bis 10 Gew.-% einen Chrom-Gehalt von 5 bis 8 Gew.-%, einen Molybdän-Gehalt von 2 bis 5,5 Gew.-%, einen Tantal-Gehalt von 4 bis 6 Gew.-%, einen Rhenium- Gehalt von 0 bis 1,5 Gew.-%, einen Titan-Gehalt von 3 bis 5,5 Gew.-% und einen Wolfram- Gehalt von 3,5 bis 6 Gew.-% aufweisen, wobei der Rest Nickel und unvermeidbare Verunreinigungen sind. Further, a nickel base superalloy may have an aluminum content of 4 to 6 wt%, a cobalt content of 8 to 10 wt%, a chromium content of 5 to 8 wt%, a molybdenum content of 2 to 5.5 wt .-%, a tantalum content of 4 to 6 wt .-%, a rhenium content of 0 to 1.5 wt .-%, a titanium content of 3 to 5.5 wt. % and have a tungsten content of 3.5 to 6 wt .-%, the remainder being nickel and unavoidable impurities.
Nach einer weiteren Ausfuhrungsform kann die Nickel-Basis- Superlegierung einen Aluminium- Gehalt von 4,5 bis 5,5 Gew.-%, einen Kobalt-Gehalt von 8,5 bis 9,5 Gew.-%, einen Chrom- Gehalt von 6 bis 7,5 Gew.-%, einen Molybdän-Gehalt von 2 bis 4 Gew.-%, einen Tantal-Gehalt von 4 bis 5,5 Gew.-%, einen Rhenium-Gehalt von 0,1 bis 1 Gew.-%, einen Titan-Gehalt von 3,5 bis 5,5 Gew.-% und einen Wolfram-Gehalt von 4 bis 5,5 Gew.-% aufweisen. Der Rest wird wiederum durch Nickel und unvermeidbare Verunreinigungen gebildet. According to a further embodiment, the nickel-base superalloy may have an aluminum content of 4.5 to 5.5 wt .-%, a cobalt content of 8.5 to 9.5 wt .-%, a chromium content of 6 to 7.5 wt .-%, a molybdenum content of 2 to 4 wt .-%, a tantalum content of 4 to 5.5 wt .-%, a rhenium content of 0.1 to 1 wt. -%, have a titanium content of 3.5 to 5.5 wt .-% and a tungsten content of 4 to 5.5 wt .-%. The rest is again formed by nickel and unavoidable impurities.
Nach einer weiteren Ausfuhrungsform kann die Nickel-Basis-Superlegierung einen Aluminium- Gehalt von 4,5 bis 5,5 Gew.-%, einen Kobalt-Gehalt von 8,5 bis 9,5 Gew.- , einen Chrom- Gehalt von 6 bis 7,5 Gew.-%, einen Tantal-Gehalt von 6 bis 8 Gew.-%, einen Rhenium-Gehalt von 0 bis 2 Gew.-%, einen Titan-Gehalt von 1,5 bis 3 Gew.-% und einen Wolfram-Gehalt von 6 bis 8 Gew.-% aufweisen. Der Rest wird wiederum durch Nickel und unvermeidbare Verunreinigungen gebildet. According to a further embodiment, the nickel-based superalloy may have an aluminum content of 4.5 to 5.5% by weight, a cobalt content of 8.5 to 9.5% by weight, a chromium Content of 6 to 7.5 wt .-%, a tantalum content of 6 to 8 wt .-%, a rhenium content of 0 to 2 wt .-%, a titanium content of 1.5 to 3 wt. % and have a tungsten content of 6 to 8 wt .-%. The rest is again formed by nickel and unavoidable impurities.
Derartige Legierungen können in unterschiedlichen Formen, beispielsweise als gerichtet erstarrte Legierung oder als Einkristalle für Bauteile in Gasturbinen und insbesondere Flugtriebwerken eingesetzt werden. Insbesondere können die Legierungen für Turbinenschaufeln und insbesondere Laufschaufeln von Niederdruckturbinen Verwendung finden. Such alloys can be used in various forms, for example as a directionally solidified alloy or as single crystals for components in gas turbines and in particular aircraft engines. In particular, the alloys for turbine blades and in particular blades of low-pressure turbines can be used.
AUSFÜHRUNGSBEISPIELE EMBODIMENTS
Die vorliegende Erfindung kann insbesondere durch Legierungen verwirklicht werden, die folgende Zusammensetzungen aufweist: The present invention can be realized in particular by alloys having the following compositions:
Mit derartigen Legierungen wird erreicht, dass auch bei hohen Temperaturen, also z.B. Temperaturen im Einsatzbereich von Niederdruckturbinen eines Flugtriebwerk, ein hoher Ausscheidungsanteil vorliegt, sodass die Festigkeit und insbesondere Kriechfestigkeit erhöht ist. Gleichzeitig ist auch bei tiefen Temperaturen ein hoher Ausscheidungsanteil gegeben, sodass auch hier entsprechende Festigkeitswerte erreicht werden. With such alloys it is achieved that even at high temperatures, e.g. Temperatures in the field of application of low-pressure turbines of an aircraft engine, a high precipitation fraction is present, so that the strength and in particular creep resistance is increased. At the same time, even at low temperatures, a high degree of precipitation is given, so that here, too, corresponding strength values are achieved.
Mit den vorgestellten Legierungen kann insbesondere erreicht werden, dass die Verteilungsverhältnisse von Wolfram und Molybdän zwischen den Ausscheidungen und der Matrix-Phase verbessert werden, was die Reduzierung des Rhenium-Anteils ermöglicht. Dadurch wird nicht nur erreicht, dass sich die Werkstoffkosten reduzieren, sondern auch die Dichte der Legierung wird reduziert, was für Bauteile im Flugtriebwerksbau von erheblicher Bedeutung ist, da das Triebwerksgewicht reduziert und der Wirkungsgrad erhöht werden kann. In particular, it can be achieved with the alloys presented that the distribution ratios of tungsten and molybdenum between the precipitates and the matrix phase are improved, which enables the reduction of the rhenium fraction. This will not only This reduces material costs, but also reduces the density of the alloy, which is of considerable importance to aeroengine components because engine weight can be reduced and efficiency can be increased.
Die Legierungen 4 bis 6 sind im Vergleich zu den Legierungen 1 bis 3 besser gieß- bzw: wärme- behandelbar. The alloys 4 to 6 are better pourable or heat treatable compared to the alloys 1 to 3.
Obwohl die vorliegende Erfindung anhand der Ausfuhrungsbeispiele beschrieben ist, ist für den Fachmann klar, dass die Erfindung nicht auf diese Ausführungsbeispiele beschränkt ist, sondern lediglich durch den Umfang des Schutzbereichs der beigefügten Ansprüche beschränkt ist. Although the present invention has been described with reference to the exemplary embodiments, it will be apparent to those skilled in the art that the invention is not limited to these embodiments, but is limited only by the scope of the scope of the appended claims.

Claims

Patentanspruch claim
1. Nickel-Basis-Superlegierung, die neben Nickel Aluminium, Kobalt, Chrom, Molybdän, Tantal, Titan und Wolfram als Legierungsbestandteile umfasst, wobei zusätzlich Rhenium enthalten sein kann und der Rhenium-Gehalt kleiner oder gleich 2 Gew.-% ist, 1. nickel-base superalloy comprising, in addition to nickel, aluminum, cobalt, chromium, molybdenum, tantalum, titanium and tungsten as alloying constituents, wherein rhenium may additionally be present and the rhenium content is less than or equal to 2% by weight;
dadurch gekennzeichnet, dass  characterized in that
der Titan-Gehalt größer oder gleich 1,5 Gew.-% ist.  the titanium content is greater than or equal to 1.5% by weight.
2. Nickel-Basis-Superlegierung nach Anspruch 1 , 2. Nickel-based superalloy according to claim 1,
dadurch gekennzeichnet, dass  characterized in that
der Molybdän-Gehalt bei Abwesenheit von Rhenium größer 3 Gew.-% ist.  the molybdenum content in the absence of rhenium is greater than 3% by weight.
3. Nickel-Basis-Superlegierung nach Anspruch 1 oder 2, 3. Nickel-based superalloy according to claim 1 or 2,
dadurch gekennzeichnet, dass  characterized in that
der Wolfram-Gehalt kleiner oder gleich 8 Gew.-%, insbesondere kleiner oder gleich 5 Gew.- % ist oder im Bereich von 6 bis 8 Gew.-% ist.  the tungsten content is less than or equal to 8% by weight, in particular less than or equal to 5% by weight, or in the range from 6 to 8% by weight.
4. Nickel-Basis-Superlegierung nach einem der vorhergehenden Ansprüche, 4. Nickel-based superalloy according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
der Tantal-Gehalt kleiner oder gleich 8 Gew.-%, insbesondere kleiner oder gleich 7,5 Gew.- %, vorzugsweise kleiner oder gleich 5 Gew.-% ist oder im Bereich von 6 bis 8 Gew.-% ist.  the tantalum content is less than or equal to 8% by weight, in particular less than or equal to 7.5% by weight, preferably less than or equal to 5% by weight or in the range from 6 to 8% by weight.
5. Nickel-Basis-Superlegierung nach einem der vorhergehenden Ansprüche, 5. nickel-base superalloy according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
die Legierung Aluminium mit einem Gehalt von 4 bis 6 Gew.-%, Kobalt mit einem Gehalt von 8 bis 10 Gew.-%, Chrom mit einem Gehalt von 5 bis 8 Gew.-%, Molybdän mit einem Gehalt von 0 bis 5,5 Gew.-%, Tantal mit einem Gehalt von 4 bis 8 Gew.-%, Rhenium mit einem Gehalt von 0 bis 2 Gew.-%, Titan mit einem Gehalt von 1,5 bis 5,5 Gew.-% und Wolfram mit einem Gehalt von 3,5 bis 8 Gew.-% sowie dem Rest Nickel und unvermeidbare Verunreinigungen umfasst.  the alloy aluminum with a content of 4 to 6 wt.%, cobalt with a content of 8 to 10 wt.%, chromium with a content of 5 to 8 wt.%, molybdenum with a content of 0 to 5, 5% by weight, tantalum containing 4 to 8% by weight, rhenium containing 0 to 2% by weight, titanium containing 1.5 to 5.5% by weight and tungsten with a content of 3.5 to 8 wt .-% and the balance comprises nickel and unavoidable impurities.
6. Nickel-Basis-Superlegierung nach einem der vorhergehenden Ansprüche, 6. nickel-base superalloy according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
die Legierung Aluminium mit einem Gehalt von 4 bis 6 Gew.-%, Kobalt mit einem Gehalt von 8 bis 10 Gew.-%, Chrom mit einem Gehalt von 5 bis 8 Gew.-%, Molybdän mit einem Gehalt von 2 bis 5,5 Gew.-%, Tantal mit einem Gehalt von 4 bis 6 Gew.-%, Rhenium mit einem Gehalt von 0 bis 1,5 Gew.-%, Titan mit einem Gehalt von 3 bis 5,5 Gew.-% und Wolfram mit einem Gehalt von 3,5 bis 6 Gew.-% sowie dem Rest Nickel und unvermeidbare Verunreinigungen umfasst. the alloy is aluminum with a content of 4 to 6 wt .-%, cobalt with a content of 8 to 10 wt .-%, chromium with a content of 5 to 8 wt .-%, molybdenum with a Content from 2 to 5.5 wt .-%, tantalum with a content of 4 to 6 wt .-%, rhenium with a content of 0 to 1.5 wt .-%, titanium with a content of 3 to 5.5 Wt .-% and tungsten with a content of 3.5 to 6 wt .-% and the balance nickel and unavoidable impurities.
7. Nickel-Basis-Superlegierung nach einem der vorhergehenden Ansprüche, 7. Nickel-based superalloy according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
die Legierung Aluminium mit einem Gehalt von 4,5 bis 5,5 Gew.-%, Kobalt mit einem Gehalt von 8,5 bis 9,5 Gew.-%, Chrom mit einem Gehalt von 6 bis 7,5 Gew.-%, Molybdän mit einem Gehalt von 2 bis 4 Gew.-%, Tantal mit einem Gehalt von 4 bis 5,5 Gew.-%, Rhenium mit einem Gehalt von 0 bis 1 Gew.-%, Titan mit einem Gehalt von 3,5 bis 5 Gew.-% und Wolfram mit einem Gehalt von 4 bis 5,5 Gew.-% sowie dem Rest Nickel und unvermeidbare Verunreinigungen umfasst.  the alloy aluminum with a content of 4.5 to 5.5 wt .-%, cobalt with a content of 8.5 to 9.5 wt .-%, chromium with a content of 6 to 7.5 wt .-% Molybdenum containing 2 to 4% by weight, tantalum containing 4 to 5.5% by weight, rhenium containing 0 to 1% by weight, titanium containing 3.5% to 5 wt .-% and tungsten with a content of 4 to 5.5 wt .-% and the remainder comprises nickel and unavoidable impurities.
8. Nickel-Basis-Superlegierung nach einem der Ansprüche 1 bis 5, 8. nickel-base superalloy according to one of claims 1 to 5,
dadurch gekennzeichnet, dass  characterized in that
der Titan-Gehalt im Bereich von 1 ,5 bis 3 Gew.-% liegt.  the titanium content is in the range of 1, 5 to 3 wt .-%.
9. Nickel-Basis-Superlegierung nach einem der Ansprüche 1 bis 5, 9. nickel-base superalloy according to one of claims 1 to 5,
dadurch gekennzeichnet, dass  characterized in that
die Legierung Aluminium mit einem Gehalt von 4,5 bis 5,5 Gew.-%, Kobalt mit einem Gehalt von 8,5 bis 9,5 Gew.-%, Chrom mit einem Gehalt von 6 bis 7,5 Gew.-%, Tantal mit einem Gehalt von 6 bis 8 Gew.-%, Rhenium mit einem Gehalt von 0 bis 2 Gew.-%, Titan mit einem Gehalt von 1,5 bis 3 Gew.-% und Wolfram mit einem Gehalt von 6 bis 8 Gew.-% sowie dem Rest Nickel und unvermeidbare Verunreinigungen umfasst.  the alloy aluminum with a content of 4.5 to 5.5 wt .-%, cobalt with a content of 8.5 to 9.5 wt .-%, chromium with a content of 6 to 7.5 wt .-% , Tantalum containing 6 to 8 wt%, rhenium containing 0 to 2 wt%, titanium containing 1.5 to 3 wt%, and tungsten containing 6 to 8 Wt .-% and the balance includes nickel and unavoidable impurities.
10. Bauteil einer Gasturbine, insbesondere eines Flugtriebwerks, vorzugsweise Turbinenschaufel für eine Niederdruckturbine hergestellt mit einer Legierung nach einem der vorhergehenden Ansprüche. 10. Component of a gas turbine, in particular an aircraft engine, preferably turbine blade for a low-pressure turbine made with an alloy according to any one of the preceding claims.
EP12787636.5A 2011-12-07 2012-10-17 Rhenium free or low rhenium nickel base superalloy Not-in-force EP2788518B1 (en)

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PCT/DE2012/001009 WO2013083101A1 (en) 2011-12-07 2012-10-17 Rhenium-free or rhenium-reduced nickel-base superalloy

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ES2682362T3 (en) 2015-05-05 2018-09-20 MTU Aero Engines AG Super-alloy of rhenium-free nickel with low density
DE102016203724A1 (en) * 2016-03-08 2017-09-14 Siemens Aktiengesellschaft SX-nickel alloy with improved TMF properties, raw material and component

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US4765850A (en) 1984-01-10 1988-08-23 Allied-Signal Inc. Single crystal nickel-base super alloy
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US20140356183A1 (en) 2014-12-04
US9850765B2 (en) 2017-12-26
WO2013083101A1 (en) 2013-06-13
ES2670877T3 (en) 2018-06-01

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