DE102021213329A1 - Cobalt-based alloy with a high aluminum content, powder, process and components - Google Patents
Cobalt-based alloy with a high aluminum content, powder, process and components Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0433—Nickel- or cobalt-based alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/09—Mixtures of metallic powders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/04—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of turbine blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3046—Co as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
-
- 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
- C22C19/07—Alloys based on nickel or cobalt based on cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/25—Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
- B22F2007/068—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts repairing articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/001—Turbines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/34—Laser welding for purposes other than joining
- B23K26/342—Build-up welding
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Powder Metallurgy (AREA)
Abstract
Die Erfindung betrifft eine Nickel-Kobalt-Superlegierung, die aufweist, insbesondere besteht aus (in Gew.%):The invention relates to a nickel-cobalt superalloy which has, in particular consists of (in % by weight):
Description
Die Erfindung betrifft eine Kobaltbasislegierung mit hohem Anteil Aluminium, ein Pulver sowie ein Bauteil.The invention relates to a cobalt-based alloy with a high proportion of aluminum, a powder and a component.
Für die Turbinenlaufschaufeln der nächsten Generation wird aufgrund einer hohen Temperaturbelastung (> 1373K) ein oxidationsbeständigerer Werkstoff an den Spitzen der Turbinenlaufschaufeln benötigt.For the next generation of turbine blades, a more oxidation-resistant material is required at the tips of the turbine blades due to a high temperature load (> 1373K).
Dabei kann die Spitze einer Turbinenschaufel schon als Neuteil auch einen anderen Werkstoff als das Material des Schaufelblattes aufweisen.Even as a new part, the tip of a turbine blade can also have a different material than the material of the blade leaf.
Kobaltbasis-Superlegierungen zur Verbesserung der Oxidationsbeständigkeit werden derzeit schon als Zusatzwerkstoff für Reparaturen von Schaufelspitzen eingesetzt.Cobalt-based superalloys to improve oxidation resistance are already being used as filler material for blade tip repairs.
Eine Verbesserung der mechanischen Eigenschaften und der Oxidationsbeständigkeit bei gleichzeitig guter Schweißbarkeit wird angestrebt.The aim is to improve the mechanical properties and the resistance to oxidation while at the same time having good weldability.
Es ist daher Aufgabe der Erfindung oben genanntes Problem zu lösen.It is therefore the object of the invention to solve the above problem.
Die Aufgabe wird gelöst durch eine Kobaltbasislegierung gemäß Anspruch 1, ein Pulver gemäß Anspruch 4, Bauteile gemäß Ansprüche 10, 11 sowie Verfahren nach Ansprüchen 12, 13.The object is achieved by a cobalt-based alloy according to claim 1, a powder according to claim 4, components according to claims 10, 11 and methods according to claims 12, 13.
In den Unteransprüchen sind weitere vorteilhafte Maßnahmen aufgelistet, die beliebig miteinander kombiniert werden können, um weitere Vorteile zu erzielen.Further advantageous measures are listed in the dependent claims, which can be combined with one another as desired in order to achieve further advantages.
Die Idee besteht in einer schweißbaren Kobaltbasislegierung, die aufweist, insbesondere besteht aus (in Gew.%):
Eine weitere vorteilhafte Legierung weist dabei auf, insbesondere besteht aus (in Gew.%):
Eine weitere vorteilhafte Legierung weist dabei auf, insbesondere besteht aus (in Gew.%):
Die Legierung kann als ein Pulver mit homogener Zusammensetzung vorliegen oder wird aus zwei oder drei Pulvern physikalisch zusammengemischt.The alloy can be present as a powder of homogeneous composition or is physically mixed together from two or three powders.
Dabei wird zumindest eine CoNiCrAlY-Legierung (MCrAlY) und ein oder zwei Kobaltbasislegierungen verwendet.At least one CoNiCrAlY alloy (MCrAlY) and one or two cobalt-based alloys are used.
Eine kobaltbasierte Superlegierung, die dabei vorzugsweise verwendet wird, weist auf oder besteht aus (in Gew.%):
insbesondere
ohne Bor (B) und/oder ohne Zirkon (Zr) und/oder ohne Silizium (Si),
und/oder
vorzugsweise eine kobaltbasierte Superlegierung,
die aufweist oder besteht aus (in Gew.%) :
in particular
without boron (B) and/or without zirconium (Zr) and/or without silicon (Si),
and or
preferably a cobalt-based superalloy,
which has or consists of (in % by weight) :
Die dabei vorzugsweise verwendete CoNiCrAlY-Legierung weist auf oder besteht aus (in Gew.%):
Dabei werden vorzugsweise jeweils 6Gew.% bis 10Gew.%, ganz insbesondere 8Gew.% der Kobaltbasislegierungen und eine CoNiCrAlY-Legierung (als Rest) verwendet oder
18Gew.% bis 22Gew.%, ganz insbesondere 20Gew.% einer der Kobaltbasislegierungen und eine CoNiCrAlY-Legierung (als Rest) verwendet.In this case, preferably 6% by weight to 10% by weight, in particular 8% by weight, of the cobalt-based alloys and a CoNiCrAlY alloy (as the remainder) are used or
18% by weight to 22% by weight, in particular 20% by weight, of one of the cobalt-based alloys and a CoNiCrAlY alloy (the remainder) are used.
Aufgrund der Zugabe der Korngrenzen verfestigenden Elemente Kohlenstoff (C) und Hafnium (Hf) weist die Legierung bessere mechanische Eigenschaften auf als eine NiCoCrAlY-Haftvermittlerschicht.Due to the addition of the grain boundary strengthening elements carbon (C) and hafnium (Hf), the alloy has better mechanical properties than a NiCoCrAlY adhesion promoter layer.
Kohlenstoff (C) wird zugesetzt, der, zusätzlich zu seiner Funktion als desoxidierendes Element, weitere Funktionen zur Verbindung mit Titan (Ti) und Tantal (Ta) zwecks Bildung stabiler MC-Typ-Primärkarbide hat, um die Vergröberung austenitischer Körner während einer Heißverformung zu unterdrücken und die Heißgleitfähigkeit zu verbessern. Die gewünschte Wirkung des Kohlenstoffs (C) wird erreicht.Carbon (C) is added, which, in addition to its function as a deoxidizing element, has other functions of combining with titanium (Ti) and tantalum (Ta) to form stable MC-type primary carbides to prevent coarsening of austenitic grains during hot working suppress and improve the hot lubricity. The desired effect of the carbon (C) is achieved.
Silizium (Si) kann vorzugsweise als ein Desoxidationsmittel zugesetzt werden und wirkt gleichzeitig zur Verbesserung der Haftung einer sich bildenden Oxidschicht. Jedoch verursacht dessen übermäßiger Zusatz eine Verringerung sowohl der Heißverformbarkeit als auch der Duktilität bei Raumtemperaturen.Silicon (Si) may preferably be added as a deoxidizing agent and at the same time acts to improve adhesion of an oxide layer that is formed. However, its excessive addition causes a reduction in both hot workability and ductility at room temperatures.
Chrom (Cr) bildet eine Oxidschicht mit einer hochgradig engen Haftung an der Oberfläche während einer Erhitzung auf hohe Temperaturen und verbessert die Oxidationsbeständigkeit. Zusätzlich kann Chrom (Cr) auch die Warmumformbarkeit verbessern.Chromium (Cr) forms an oxide layer with a highly tight adhesion to the surface during high temperature heating and improves oxidation resistance. In addition, chromium (Cr) can also improve hot workability.
Wolfram (W) ist ein Zusatzelement, das im Wesentlichen den austenitischen Mischkristall bis zu hohen Temperaturen verfestigt.Tungsten (W) is an additional element that essentially strengthens the austenitic mixed crystal up to high temperatures.
Molybdän (Mo) ist ein Element der gleichen Gruppe wie Wolfram (W) und daher kann der Ersatz eines Teils von Wolfram (W) durch Molybdän (Mo) die gleiche Funktion wie die von Wolfram (W) vorsehen.Molybdenum (Mo) is an element of the same group as tungsten (W), and therefore replacing part of tungsten (W) with molybdenum (Mo) can provide the same function as that of tungsten (W).
Aluminium (Al) ist ein Zusatzelement, das zur Bildung einer stabilen γ'-Phase nach einer Anlassbehandlung wesentlich ist.Aluminum (Al) is an additive element essential for forming a stable γ' phase after a tempering treatment.
Ein Teil des Titans (Ti) wird mit Kohlenstoff (C) zur Bildung eines stabilen MC-Typ-Primärkarbids verbunden und hat eine festigkeitserhöhende Funktion bei nicht γ'-gehärteten Legierungen.A part of titanium (Ti) is combined with carbon (C) to form a stable MC-type primary carbide and has a strength-enhancing function in non-γ'-hardened alloys.
Der Rest von Titan (Ti) liegt in der γ'-Phase im Festlösungszustand vor, wodurch die γ'-Phase verfestigt wird, und dient zur Verbesserung der Hochtemperaturfestigkeit.The balance of titanium (Ti) is in the γ'-phase in the solid-solution state, thereby strengthening the γ'-phase, and serves to improve high-temperature strength.
Weiterhin haben Aluminium (Al), Tantal (Ta) und Titan (Ti) auch eine wichtige Funktion der Verbesserung der Oxidationsbeständigkeit, vor allem in der Kombination der Elemente bilden sie stabile Oxidschichtsysteme.Furthermore, aluminum (Al), tantalum (Ta) and titanium (Ti) also have an important function of improving oxidation resistance, especially in the combination of the elements they form stable oxide layer systems.
Gleichartig wie Titan (Ti) wird ein Teil von sowohl Tantal (Ta) als auch Kohlenstoff (C) unter Bildung stabiler MC-Typ-Primärkarbide verbunden, und sie haben festigkeitssteigernde Funktionen, vor allem für nicht γ'-gehärtete Legierungen.Similar to titanium (Ti), a portion of both tantalum (Ta) and carbon (C) is combined to form stable MC-type primary carbides, and they have strength-enhancing functions, especially for non-γ'-hardened alloys.
Zirkon (Zr) und Bor (B) sind zur Verbesserung der Hochtemperaturfestigkeit und Duktilität durch ihre Korngrenzen aktive Funktion wirksam, und wenigstens eines von ihnen kann der Legierung der Erfindung in einer passenden Menge zugesetzt werden. Ihre Wirkung wird bei einer geringen Zusatzmenge erhalten.Zirconium (Zr) and boron (B) are effective for improving high-temperature strength and ductility through their grain boundary active function, and at least one of them may be added in an appropriate amount to the alloy of the invention. Their effect is obtained with a small addition amount.
Die Legierung oder das Pulver kann bei der Neuteilherstellung von massiven Bauteilen, bei Reparaturen oder bei der modularen Herstellung von Neubauteilen, bei denen zumindest ein Abschnitt eine andere chemische Zusammensetzung aufweist, verwendet werden.The alloy or powder may be used in new part manufacture of solid components, in repairs, or in modular manufacture of new parts where at least one section has a different chemical composition.
Beschichtungen werden ebenso mit der Legierung oder dem Pulver durchgeführt.Coatings are also done with the alloy or powder.
Ein komplettes Bauteil, insbesondere ein Turbinenbauteil, kann mit den Legierungen oder dem Pulver hergestellt werden.A complete component, in particular a turbine component, can be produced with the alloys or the powder.
Ebenso kann die Legierung oder das Pulver verwendet werden, um ein modulares Neubauteil, insbesondere ein Turbinenbauteil, insbesondere ein zu reparierendes Bauteil, herzustellen. Dabei wird auf ein insbesondere metallisches Substrat, das verschieden ist von der Legierung oder dem Pulver, die Legierung oder das Pulver aufgetragen.Likewise, the alloy or the powder can be used to produce a modular new part, in particular a turbine component, in particular a component to be repaired. In this case, the alloy or the powder is applied to an in particular metallic substrate that is different from the alloy or the powder.
Verschiedene Legierungen bedeutet allgemein, dass zumindest ein Legierungselement mehr oder weniger vorhanden und/oder sich der Anteil zumindest einer Legierungskomponente um mindestens 10% unterscheidet.Different alloys generally means that at least one alloying element is more or less present and/or the proportion of at least one alloying component differs by at least 10%.
Dabei können Verfahren (Neuteil, Reparatur) wie Auftragschweißen, insbesondere Laserauftragschweißen, ganz insbesondere Laserpulverauftragschweißen oder additive Verfahren (3D-Druck), insbesondere Pulverbettverfahren oder Sprühverfahren (APS, HVOF, ...) verwendet werden.Methods (new part, repair) such as build-up welding, in particular laser build-up welding, in particular laser powder build-up welding or additive processes (3D printing), in particular powder bed processes or spray processes (APS, HVOF, ...) can be used.
Claims (13)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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DE102021213329.0A DE102021213329A1 (en) | 2021-11-26 | 2021-11-26 | Cobalt-based alloy with a high aluminum content, powder, process and components |
PCT/EP2022/080325 WO2023094116A1 (en) | 2021-11-26 | 2022-10-31 | Cobalt-based alloy having a high proportion of aluminum, powder, method and components |
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DE102021213329.0A DE102021213329A1 (en) | 2021-11-26 | 2021-11-26 | Cobalt-based alloy with a high aluminum content, powder, process and components |
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DE102021213329A1 true DE102021213329A1 (en) | 2023-06-01 |
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WO (1) | WO2023094116A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5916518A (en) | 1997-04-08 | 1999-06-29 | Allison Engine Company | Cobalt-base composition |
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EP1295969A1 (en) * | 2001-09-22 | 2003-03-26 | ALSTOM (Switzerland) Ltd | Method of growing a MCrAIY-coating and an article coated with the MCrAIY-coating |
JP5675087B2 (en) * | 2009-12-15 | 2015-02-25 | 三菱重工業株式会社 | Thermal barrier coating, turbine member, gas turbine, and method of manufacturing thermal barrier coating |
CN104711458A (en) * | 2015-03-02 | 2015-06-17 | 清华大学 | Bonding layer material containing active element for thermal barrier coating |
EP3636381A1 (en) * | 2018-10-12 | 2020-04-15 | Siemens Aktiengesellschaft | Composition for material for liquid metal deposition or additive manufacturing, method and product |
DE102020203436A1 (en) * | 2020-03-18 | 2021-09-23 | Siemens Aktiengesellschaft | Cobalt-based alloy, powder mixture, process and component |
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2021
- 2021-11-26 DE DE102021213329.0A patent/DE102021213329A1/en active Pending
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2022
- 2022-10-31 WO PCT/EP2022/080325 patent/WO2023094116A1/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5916518A (en) | 1997-04-08 | 1999-06-29 | Allison Engine Company | Cobalt-base composition |
US6365285B1 (en) | 1997-04-08 | 2002-04-02 | Rolls-Royce Corporation | Cobalt-base composition and method for diffusion braze repair of superalloy articles |
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