DE102018208737A1 - Y, Y` hardened cobalt-nickel base alloy, powder, component and process - Google Patents
Y, Y` hardened cobalt-nickel base alloy, powder, component and process Download PDFInfo
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- DE102018208737A1 DE102018208737A1 DE102018208737.7A DE102018208737A DE102018208737A1 DE 102018208737 A1 DE102018208737 A1 DE 102018208737A1 DE 102018208737 A DE102018208737 A DE 102018208737A DE 102018208737 A1 DE102018208737 A1 DE 102018208737A1
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- Prior art keywords
- cobalt
- based alloy
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Classifications
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- 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
- 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
- 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
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
Durch erhöhte Titan- und Tantalwerte sowie hohe Wolframanteile wird eine Legierung vorgeschlagen, die insbesondere für die Anwendung bei additiven Fertigungsverfahren verwendet werden kann.Increased titanium and tantalum values as well as high tungsten contents suggest an alloy which can be used in particular for use in additive manufacturing processes.
Description
Die Erfindung betrifft eine γ γ` gehärtete Kobalt-Nickel-Basislegierung, Pulver, Komponente und Verfahren.The invention relates to a γ γ` hardened cobalt-nickel base alloy, powder, component and method.
Turbinenleit- und Laufschaufeln oder Strukturbauteile im Heißgasbereich werden aus hochwarmfesten Nickelbasis-oder Kobaltbasis-Superlegierungen hergestellt.Turbine vanes and blades or structural components in the hot gas region are made of high temperature nickel base or cobalt base superalloys.
Je nach Belastungsprofil der Komponente werden generell:
- 1.) γ` Ausscheidungsgehärtete Nickelbasislegierungen
- 2.) Nickel-Knetlegierungen
- 3.) oder Kobalt-Knetlegierungen
- 1.) γ` Precipitation-hardened nickel-base alloys
- 2.) nickel-wrought alloys
- 3.) or cobalt-wrought alloys
Die Festigkeit resultiert in erster Näherung vom γ` Volumenanteil. Dieser wiederum beeinflusst maßgeblich die mögliche Fertigungsroute der Komponenten. Hochwarmfeste Superlegierungen mit hohen γ` Anteilen können nur noch über das Feingussverfahren hergestellt werden. Sie zeichnen sich durch eine hohe γ` Solvustemperatur und eine tiefe Anschmelztemperatur aus. Die Schweißbarkeit dieser Legierungsklasse ist in der Regel nicht gegeben.The strength results in a first approximation from the γ` volume fraction. This in turn significantly influences the possible production route of the components. High-temperature superalloys with high γ` content can only be produced by investment casting. They are characterized by a high γ` solvus temperature and a low melting temperature. The weldability of this alloy class is usually not given.
Generativ können diese Legierungen wegen Heißrissbildung nur über Umwege hergestellt werden. Die Knetlegierungen (Ni- oder Co-Basis) können geschmiedet werden, weisen jedoch geringere Festigkeiten auf.Generatively, these alloys can only be made by detours because of hot cracking. The wrought alloys (Ni or Co base) can be forged, but have lower strengths.
Die übliche Herstellroute erfolgt bei ausscheidungsgehärteten Komponenten über das Feingussverfahren. Mithilfe generativer Fertigungsverfahren lassen sich komplexere Bauteile realisieren, die Legierungsauswahl ist jedoch auf die weniger warmfesten Legierungen beschränkt. Nur diese lassen sich mit sinnvollen Aufbauraten rissarm verarbeiten.The usual manufacturing route takes place with precipitation-hardened components via the investment casting process. Generative manufacturing techniques can be used to create more complex parts, but alloy selection is limited to less heat-resistant alloys. Only these can be processed with reasonable build-up rates.
Es ist daher Aufgabe der Erfindung, oben genanntes Problem zu lösen.It is therefore an object of the invention to solve the above-mentioned problem.
Die Aufgabe wird gelöst durch eine Kobaltbasis-Superlegierung gemäß Anspruch 1, ein Pulver gemäß Anspruch 13, eine Komponente gemäß Anspruch 14 und ein Verfahren gemäß Anspruch 15.The object is achieved by a cobalt-based superalloy according to claim 1, a powder according to claim 13, a component according to claim 14 and a method according to claim 15.
In den Unteransprüchen sind weitere vorteilhafte Maßnahmen aufgelistet, die beliebig miteinander kombiniert werden können, um weitere Vorteile zu erzielen.In the dependent claims further advantageous measures are listed, which can be combined with each other in order to achieve further advantages.
Es wird vorgeschlagen, eine neue Materialgruppe für Heißgasbauteile, insbesondere Lauf und Leitschaufeln, Ringsegmente, Brennerteile, Scheibenwerkstoffe für kleine Turbinen oder Blisks einzusetzen. Zum Einsatz kommt eine γ, γ`-ausscheidungsgehärtete Kobaltbasislegierung mit hohem Nickel (Ni) und Chrom (Cr) Anteil.It is proposed to use a new material group for hot gas components, in particular running and guide vanes, ring segments, burner parts, disk materials for small turbines or blisks. A γ, γ` precipitation-hardened cobalt-based alloy with high nickel (Ni) and chromium (Cr) content is used.
Innerhalb dieses Rahmens werden die Eigenschaften der Legierungsklasse entsprechend der Anforderungen angepasst:
- Titan (Ti) und Tantal (Ta) erhöhen die γ' Anteile und γ' Solvustemperatur und senken die Liquidustemperatur.
- Wolfram erhöht den γ'-Anteil, hohe Anteile an Wolfram (W) sind erforderlich um die γ' verarmte Zone in Korngrenzennähe zu verringern.
- Titan (Ti) und Tantal (Ta) verbessern die Kriechbeständigkeit, aber erhöhen Gitterfehlpassung.
- Nickel (Ni) erweitert das Phasenfeld für L12 Struktur und ermöglicht höhere Chromgehalte (Cr) für besseren Korrosionsschutz, nicht zu viel, wegen des Verteilungskoeffizienten Wolfram (W), Chrom (Cr) ermöglicht Korrosionsschutz und verbessert die Bildung einer inneren Al2O3 Schicht und reduziert Gitterfehlpassung.
- - Silizum (Si) verbessert Oxidationseigenschaften
- - Bor (B) und Kohlenstoff (C) sind KG-Verfestiger
- - Hafnium (Hf) und Zirkon (Zr) ermöglichen eine bessere Schichtanbindung
- Titanium (Ti) and tantalum (Ta) increase the γ 'fractions and γ' solvus temperature and lower the liquidus temperature.
- Tungsten increases the γ 'content, high levels of tungsten (W) are required to reduce the γ' depleted zone near the grain boundary.
- Titanium (Ti) and Tantalum (Ta) improve creep resistance but increase lattice mismatch.
- Nickel (Ni) extends the phase field for L12 structure and allows higher chromium contents (Cr) for better corrosion protection, not too much, because of the distribution coefficient tungsten (W), chromium (Cr) allows corrosion protection and improves the formation of an inner Al 2 O 3 layer and reduces lattice mismatch.
- - Silizum (Si) improves oxidation properties
- Boron (B) and carbon (C) are KG solidifiers
- - Hafnium (Hf) and zirconium (Zr) allow a better layer connection
Vorzugsweise weist die Legierung kein Molybdän (Mo) und/oder auch kein Niob (Nb) und/oder kein Yttrium (Y) auf.
Ebenso kann vorzugsweise auf Zusätze von Rhenium (Re), Ruthenium (Ru) verzichtet werden.Preferably, the alloy has no molybdenum (Mo) and / or niobium (Nb) and / or yttrium (Y).
Likewise, it is preferably possible to dispense with additions of rhenium (Re), ruthenium (Ru).
Bevorzugte Legierungen:Preferred alloys:
Bevorzugtes Beispiel in Gew.-%Preferred example in% by weight
Diese Legierung hat eine hohe Korrosionsbeständigkeit, höhere Langzeit-Warmfestigkeit und weist eine bessere Schmiedbarkeit auf.This alloy has a high corrosion resistance, higher long-term heat resistance and has better forgeability.
Bevorzugtes Beispiel in Gew.-%Preferred example in% by weight
Diese Legierung weist eine mittlere Korrosionsbeständigkeit, eine höhere Langzeit-Warmfestigkeit sowie eine bessere Schmiedbarkeit auf.This alloy has a medium corrosion resistance, a higher long-term heat resistance and a better forgeability.
Besonderheiten:
- - Die hohe Fließgrenze verbessert auch TMF-Eigenschaften
- - Eine hohe Festigkeit bei mittleren Temperaturen
- - Bessere Prozessierbarkeit als übliche Nickelbasislegierungen mit vergleichbaren Eigenschaften
- - The high yield point also improves TMF properties
- - High strength at medium temperatures
- - Better processability than conventional nickel-based alloys with comparable properties
Eine Lösungsglühung erfolgt beispielsweise bei 1523K und eine Auslagerung bei 1023K - 1173K zwecks Einstellung der γ/γ` Gefügestruktur.Solution annealing takes place, for example, at 1523K and outgrowth at 1023K-1173K to adjust the γ / γ` microstructure.
Die möglichen Herstellrouten lauten:
- • Komponente wird im Guss oder als Schmiedeteil oder als AM Bauteil (Pulverbett, Laserpulver-Auftragschweißen) hergestellt.
- • Eine Verfahrenskombination ist ebenso denkbar, z.B. durch AM (Aufschweißen von weiteren Strukturen).
- • Ebenso denkbar ist die Nutzung von AM gefertigten Bauteilen im Guss als Einlegeteile.
- • Ebenso kann ein Formkörper (z.B. Ringsegment) im Metallpulverspritzguss verarbeitet werden, ggf. in Kombination der anderen Verfahren.
- • Ebenso kann ein auf dem Pulver basierendes Lot verwendet werden, um mehrere Teile zu verbinden.
- • Ebenso kann eine schweißtechnologische Verbindung hergestellt werden, z.B. mit artgleichem Schweißzusatzwerkstoff.
- • Component is produced by casting or as a forged part or as an AM component (powder bed, laser powder build-up welding).
- • A process combination is also conceivable, eg by AM (welding on of further structures).
- • Equally conceivable is the use of AM manufactured components in castings as inserts.
- • Likewise, a shaped body (eg ring segment) can be processed in the metal powder injection molding, possibly in combination of the other methods.
- • Similarly, powder based solder can be used to join multiple parts.
- • Similarly, a welding technology connection can be made, for example with matching welding filler material.
Claims (17)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018208737.7A DE102018208737A1 (en) | 2018-06-04 | 2018-06-04 | Y, Y` hardened cobalt-nickel base alloy, powder, component and process |
PCT/EP2019/061714 WO2019233692A1 (en) | 2018-06-04 | 2019-05-07 | Y, y' hardened cobalt-nickel base alloy, powder, component, and method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102018208737.7A DE102018208737A1 (en) | 2018-06-04 | 2018-06-04 | Y, Y` hardened cobalt-nickel base alloy, powder, component and process |
Publications (1)
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DE102018208737A1 true DE102018208737A1 (en) | 2019-12-05 |
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DE102018208737.7A Withdrawn DE102018208737A1 (en) | 2018-06-04 | 2018-06-04 | Y, Y` hardened cobalt-nickel base alloy, powder, component and process |
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DE (1) | DE102018208737A1 (en) |
WO (1) | WO2019233692A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020203436A1 (en) * | 2020-03-18 | 2021-09-23 | Siemens Aktiengesellschaft | Cobalt-based alloy, powder mixture, process and component |
JP7324254B2 (en) * | 2021-09-01 | 2023-08-09 | 三菱重工業株式会社 | Co-Based Alloy Material, Co-Based Alloy Product, and Method for Making Same |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1758010A1 (en) * | 1968-03-20 | 1970-12-10 | Dr Dietrich Merz | Heat-resistant alloys with a proportion of rhenium and hafnium |
DE2303802A1 (en) * | 1972-01-31 | 1973-08-16 | Int Nickel Ltd | METHOD FOR THE HEAT TREATMENT OF A DISPERSION-STABILIZED, HEAT-RESISTANT WINE ALLOY |
US3929467A (en) * | 1973-05-21 | 1975-12-30 | Int Nickel Co | Grain refining of metals and alloys |
US3999956A (en) * | 1975-02-21 | 1976-12-28 | Chromalloy American Corporation | Platinum-rhodium-containing high temperature alloy coating |
US20080289730A1 (en) * | 2005-12-05 | 2008-11-27 | Japan Science And Technology Agency | Material having a high elastic deformation and process for producing the same |
EP2045345A1 (en) * | 2007-10-02 | 2009-04-08 | Rolls-Royce plc | A nickel based superalloy |
DE102009010026A1 (en) * | 2009-02-21 | 2010-08-26 | Mtu Aero Engines Gmbh | Component, useful for flow machine, comprises a metal alloy comprising base material, where the component is coated with portion of adhesive layer comprising nickel-chromium-aluminum-yttrium alloy and a surface layer comprising zirconia |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110268989A1 (en) * | 2010-04-29 | 2011-11-03 | General Electric Company | Cobalt-nickel superalloys, and related articles |
GB201312000D0 (en) * | 2013-07-04 | 2013-08-21 | Rolls Royce Plc | Alloy |
DE102013224989A1 (en) * | 2013-12-05 | 2015-06-11 | Siemens Aktiengesellschaft | Gamma / Gamma hardened cobalt base superalloy, powder and component |
WO2016016437A2 (en) * | 2014-08-01 | 2016-02-04 | Friedrich-Alexander-Universität Erlangen-Nürnberg | Cobalt-based super alloy |
-
2018
- 2018-06-04 DE DE102018208737.7A patent/DE102018208737A1/en not_active Withdrawn
-
2019
- 2019-05-07 WO PCT/EP2019/061714 patent/WO2019233692A1/en active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1758010A1 (en) * | 1968-03-20 | 1970-12-10 | Dr Dietrich Merz | Heat-resistant alloys with a proportion of rhenium and hafnium |
DE2303802A1 (en) * | 1972-01-31 | 1973-08-16 | Int Nickel Ltd | METHOD FOR THE HEAT TREATMENT OF A DISPERSION-STABILIZED, HEAT-RESISTANT WINE ALLOY |
US3929467A (en) * | 1973-05-21 | 1975-12-30 | Int Nickel Co | Grain refining of metals and alloys |
US3999956A (en) * | 1975-02-21 | 1976-12-28 | Chromalloy American Corporation | Platinum-rhodium-containing high temperature alloy coating |
US20080289730A1 (en) * | 2005-12-05 | 2008-11-27 | Japan Science And Technology Agency | Material having a high elastic deformation and process for producing the same |
EP2045345A1 (en) * | 2007-10-02 | 2009-04-08 | Rolls-Royce plc | A nickel based superalloy |
DE102009010026A1 (en) * | 2009-02-21 | 2010-08-26 | Mtu Aero Engines Gmbh | Component, useful for flow machine, comprises a metal alloy comprising base material, where the component is coated with portion of adhesive layer comprising nickel-chromium-aluminum-yttrium alloy and a surface layer comprising zirconia |
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WO2019233692A1 (en) | 2019-12-12 |
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