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EP3087211A1 - Nickel-based superalloy with increased oxidation resistance, powder, welding method and component - Google Patents

Nickel-based superalloy with increased oxidation resistance, powder, welding method and component

Info

Publication number
EP3087211A1
EP3087211A1 EP15705536.9A EP15705536A EP3087211A1 EP 3087211 A1 EP3087211 A1 EP 3087211A1 EP 15705536 A EP15705536 A EP 15705536A EP 3087211 A1 EP3087211 A1 EP 3087211A1
Authority
EP
European Patent Office
Prior art keywords
nickel
powder
component
oxidation resistance
based superalloy
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.)
Withdrawn
Application number
EP15705536.9A
Other languages
German (de)
French (fr)
Inventor
Torsten JOKISCH
Britta Laux
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP3087211A1 publication Critical patent/EP3087211A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B23K35/3033—Ni as the principal constituent
    • B23K35/304—Ni as the principal constituent with Cr as the next major 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • 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
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or 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
    • B23K35/02—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
    • 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
    • C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
    • 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
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/15—Nickel or cobalt

Definitions

  • the invention relates to a nickel-base superalloy having improved oxidation resistance, a powder, a method of welding, and a component.
  • filler metals having a base material-like composition are generally used for tip repair of turbine blades made of ⁇ ⁇ - strengthened nickel-base superalloys.
  • these can be poorly welded due to their high Al and Ti content, so that already modified filler metals have been developed with improved weldability.
  • the oxidation resistance of the filler material in the area of the blade tip is of great interest. In this respect, the new filler metals have so far not optimal properties.
  • Yttrium (Y) 0.008% to 0.012%
  • a filler metal having the following composition is proposed:
  • the alloy can be in the form of a powder and can be electrodeposited onto a component of a substrate.
  • the substrate has build-up welding of the above-mentioned alloy.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)

Abstract

As a result of the addition of hafnium, no precipitation phases occur in a nickel-based superalloy and the proportions of chromium (Cr) and aluminium (Al) lead to a slightly reduced γ'-content, thus achieving good oxidation resistance and weldability.

Description

Nickelbasis-Superlegierung mit erhöhter Oxidationsbeständigkeit , Pulver, Verfahren zum Schweißen und  Nickel-base superalloy with enhanced oxidation resistance, powder, welding and
Bauteil  component
Die Erfindung betrifft eine Nickelbasis-Superlegierung, die eine verbesserte Oxidationsbeständigkeit aufweist, ein Pulver, ein Verfahren zum Schweißen und ein Bauteil. Zur Tip-Reparatur von Turbinenlaufschaufeln aus γλ -verfestigten Nickelbasis-Superlegierungen werden in der Regel Schweißzusatzwerkstoffe mit einer grundwerkstoffähnlichen Zusammensetzung verwendet. Diese lassen sich jedoch aufgrund ihres hohen AI- und Ti-Anteils schlecht schweißen, so dass bereits modifizierte Schweißzusatzwerkstoffe mit einer verbesserten Schweißbarkeit entwickelt wurden. Neben der Schweißbarkeit ist jedoch die Oxidationsbeständigkeit der Zusatzwerkstoffe im Bereich der Schaufelspitze von großem Interesse. In dieser Hinsicht zeigen die neuen Schweißzusatzwerkstoffe bislang noch keine optimalen Eigenschaften. The invention relates to a nickel-base superalloy having improved oxidation resistance, a powder, a method of welding, and a component. For tip repair of turbine blades made of γ λ- strengthened nickel-base superalloys, filler metals having a base material-like composition are generally used. However, these can be poorly welded due to their high Al and Ti content, so that already modified filler metals have been developed with improved weldability. In addition to the weldability, however, the oxidation resistance of the filler material in the area of the blade tip is of great interest. In this respect, the new filler metals have so far not optimal properties.
Es ist daher Aufgabe der Erfindung eine Nickelbasis-Superlegierung, ein Pulver, ein Verfahren und ein Bauteil aufzuzeigen, bei dem die oben genannten Probleme gelöst werden. It is therefore an object of the invention to provide a nickel-base superalloy, a powder, a method and a component, in which the above-mentioned problems are solved.
Die Aufgabe wird gelöst durch eine Legierung gemäß Anspruch 1, ein Pulver gemäß Anspruch 3, ein Verfahren gemäß Anspruch 4 und ein Bauteil gemäß Anspruch 6. In den Unteransprüchen sind weitere vorteilhafte Maßnahmen aufgelistet, die beliebig miteinander kombiniert werden können, um weitere Vorteile zu erzielen. The object is achieved by an alloy according to claim 1, a powder according to claim 3, a method according to claim 4 and a component according to claim 6. In the subclaims further advantageous measures are listed, which can be combined with each other in order to obtain further advantages ,
Das Ausführungsbeispiel stellt nur einen Teil der Erfindung dar. The embodiment is only part of the invention.
Es wird vorgeschlagen, die neuen Schweißzusatzwerkstoffe weiter zu modifizieren und dadurch eine verbesserte Oxidations- beständigkeit einzustellen. Dabei ist es wünschenswert, dass sich während des Betriebes eine möglichst dichte Aluminiumoxidschicht ausbildet, die den Werkstoff passiviert. Entscheidende Elemente in diesem Zusammenhang sind Aluminium (AI) und Chrom (Cr) , wobei der Anteil an Aluminium (AI) im Hinblick auf die Schweißbarkeit nicht weiter erhöht werden soll . It is proposed to further modify the new filler metals and thereby improve the oxidation state. consistency. It is desirable that during operation a dense alumina layer forms, which passivates the material. Crucial elements in this context are aluminum (Al) and chromium (Cr), wherein the proportion of aluminum (AI) should not be further increased in terms of weldability.
Daher wird ein Zusatzwerkstoff mit einem erhöhten Anteil an Chrom (Cr) in Kombination mit einem geringen Anteil an Hafnium (Hf) vorgeschlagen. Weiterhin wird ein geringer Anteil an Yttrium (Y) zulegiert, um die zyklische Oxidationsbestän- digkeit zu verbessern. Die Legierung enthält Therefore, an additive material with an increased proportion of chromium (Cr) in combination with a small proportion of hafnium (Hf) is proposed. Furthermore, a small proportion of yttrium (Y) is added to improve the cyclic oxidation resistance. The alloy contains
Kobalt (Co): 8,8% - 10,5%,  Cobalt (Co): 8.8% - 10.5%,
insbesondere 9,5%, especially 9.5%,
Chrom (Cr) : 15% - 17%,  Chromium (Cr): 15% - 17%,
insbesondere 16%, in particular 16%,
Molybdän (Mo): 1,2% bis 2,2%, Molybdenum (Mo): 1.2% to 2.2%,
insbesondere 1,7%, especially 1.7%,
Wolfram (W) : 3,2% bis 4,2%,  Tungsten (W): 3.2% to 4.2%,
insbesondere 3,7%, in particular 3.7%,
Aluminium (AI): 2,3% bis 3,3%,  Aluminum (AI): 2.3% to 3.3%,
insbesondere 2,8%, especially 2.8%,
Titan (Ti) : 4,2% bis 5,4%,  Titanium (Ti): 4.2% to 5.4%,
insbesondere 4,8%, in particular 4.8%,
Bor (B) : 0,006% bis 0,01%,  Boron (B): 0.006% to 0.01%,
insbesondere 0,008%, especially 0.008%,
Zirkon (Zr) : 0,002% bis 0,003%, Zirconium (Zr): 0.002% to 0.003%,
insbesondere 0,025%, especially 0.025%,
Hafnium (Hf) : 0,1% bis 0,2%,  Hafnium (Hf): 0.1% to 0.2%,
insbesondere 0,15%, in particular 0.15%,
Kohlenstoff (C) : 0,1% bis 0,2%,  Carbon (C): 0.1% to 0.2%,
insbesondere 0,15%, in particular 0.15%,
Yttrium (Y) : 0,008% bis 0,012%,  Yttrium (Y): 0.008% to 0.012%,
insbesondere 0,01%, Nickel , in particular 0.01%, Nickel,
insbesondere Rest Nickel . especially the rest of nickel.
Vorzugsweise wird ein Schweißzusatzwerkstoff mit der folgen- den Zusammensetzung vorgeschlagen: Preferably, a filler metal having the following composition is proposed:
Ni-9.5Co-16Cr-l .7Mo-3.7W-2.8A1-4.8Ti-0.008B-0.025Zr-0.15Hf- 0.15C-0.01Y (in Gew. -%) .  Ni-9.5Co-16Cr-1 .7Mo-3.7W-2.8A1-4.8Ti-0.008B-0.025Zr-0.15Hf-0.15C-0.01Y (in weight%).
Eine Simulation bestätigt, dass der Werkstoff sich ähnlich der kommerziellen Nickelbasislegierung Rene 80 verhält, wobei ein leicht reduzierter γλ -Anteil vorliegt, der zu einer verbesserten Schweißbarkeit führt. Durch die Zugabe von Hafnium (Hf) entstehen keine unerwünschten Ausscheidungsphasen. Die Legierung kann als Pulver vorliegen und auftragsgeschweißt werden auf ein Bauteil aus einem Substrat. Das Substrat weist eine Auftragsschweißung aus der oben genannten Legierung auf . A simulation confirms that the material behaves similar to the commercial nickel base alloy Rene 80, with a slightly reduced γ λ content, resulting in improved weldability. The addition of hafnium (Hf) does not produce any undesirable precipitation phases. The alloy can be in the form of a powder and can be electrodeposited onto a component of a substrate. The substrate has build-up welding of the above-mentioned alloy.

Claims

Patentansprüche claims
1. Nickelbasis-Superlegierung 1. Nickel-based superalloy
aufweisend in (Gew.-%):  having in (wt .-%):
Kobalt (Co): 8,8% - 10,5%,  Cobalt (Co): 8.8% - 10.5%,
insbesondere 9,5%,  especially 9.5%,
Chrom (Cr) : 15% - 17%,  Chromium (Cr): 15% - 17%,
insbesondere 16%,  in particular 16%,
Molybdän (Mo): 1,2% bis 2,2%,  Molybdenum (Mo): 1.2% to 2.2%,
insbesondere 1,7%,  especially 1.7%,
Wolfram (W) : 3,2% bis 4,2%,  Tungsten (W): 3.2% to 4.2%,
insbesondere 3,7%,  in particular 3.7%,
Aluminium (AI): 2,3% bis 3,3%,  Aluminum (AI): 2.3% to 3.3%,
insbesondere 2,8%,  especially 2.8%,
Titan (Ti) : 4,2% bis 5,4%,  Titanium (Ti): 4.2% to 5.4%,
insbesondere 4,8%,  in particular 4.8%,
Bor (B) : 0,006% bis 0,01%,  Boron (B): 0.006% to 0.01%,
insbesondere 0,008%,  especially 0.008%,
Zirkon (Zr) : 0,002% bis 0,003%,  Zirconium (Zr): 0.002% to 0.003%,
insbesondere 0,025%,  especially 0.025%,
Hafnium (Hf) : 0,1% bis 0,2%,  Hafnium (Hf): 0.1% to 0.2%,
insbesondere 0,15%,  in particular 0.15%,
Kohlenstoff (C) : 0,1% bis 0,2%,  Carbon (C): 0.1% to 0.2%,
insbesondere 0,15%,  in particular 0.15%,
Yttrium (Y) : 0,008% bis 0,012%,  Yttrium (Y): 0.008% to 0.012%,
insbesondere 0,01%,  in particular 0.01%,
Nickel ,  Nickel,
insbesondere Rest Nickel .  especially the rest of nickel.
2. Nickelbasis-Superlegierung nach Anspruch 1, 2. Nickel-based superalloy according to claim 1,
bestehend aus Nickel (Ni) , Kobalt (Co) , Chrom (Cr) , Molybdän (Mo) , Wolfram (W) , Aluminium (AI) , Titan (Ti) , Bor (B) , Zirkon (Zr) , Hafnium (Hf) , Kohlenstoff (C) , Yttrium (Y) . Pulver aufweisend eine Legierung nach einem oder beiden der Ansprüche 1 oder 2. consisting of nickel (Ni), cobalt (Co), chromium (Cr), molybdenum (Mo), tungsten (W), aluminum (AI), titanium (Ti), boron (B), zirconium (Zr), hafnium (Hf ), Carbon (C), yttrium (Y). A powder comprising an alloy according to one or both of claims 1 or 2.
Verfahren zum Schweißen, Method of welding,
bei dem eine Legierung nach Anspruch 1 oder 2 oder ein Pul ver nach Anspruch 3 verwendet wird als Schweißzusatzwerkstoff . wherein an alloy according to claim 1 or 2 or a powder according to claim 3 is used as a welding filler material.
Verfahren nach Anspruch 4 , Method according to claim 4,
bei dem Rene 80 auftragsgeschweißt wird. in which Rene 80 is contract welded.
Bauteil , Component,
aufweisend ein Substrat, having a substrate,
insbesondere Nickel-basiert , especially nickel-based,
und eine Auftragsscheißung aus einer Legierung nach Anspruch 1 oder 2 oder and an order deposit of an alloy according to claim 1 or 2 or
aus einem Pulver nach Anspruch 3. of a powder according to claim 3.
EP15705536.9A 2014-03-11 2015-02-06 Nickel-based superalloy with increased oxidation resistance, powder, welding method and component Withdrawn EP3087211A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014204408.1A DE102014204408A1 (en) 2014-03-11 2014-03-11 Nickel base superalloy with enhanced oxidation resistance, powder, welding process and component
PCT/EP2015/052467 WO2015135702A1 (en) 2014-03-11 2015-02-06 Nickel-based superalloy with increased oxidation resistance, powder, welding method and component

Publications (1)

Publication Number Publication Date
EP3087211A1 true EP3087211A1 (en) 2016-11-02

Family

ID=52544450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15705536.9A Withdrawn EP3087211A1 (en) 2014-03-11 2015-02-06 Nickel-based superalloy with increased oxidation resistance, powder, welding method and component

Country Status (4)

Country Link
US (1) US20170239759A1 (en)
EP (1) EP3087211A1 (en)
DE (1) DE102014204408A1 (en)
WO (1) WO2015135702A1 (en)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2132022A1 (en) * 1971-06-28 1973-01-11 Battelle Institut E V Alloys of nickel and cobalt - with high strength and temp resistance
GB1512984A (en) * 1974-06-17 1978-06-01 Cabot Corp Oxidation resistant nickel alloys and method of making the same
US4475980A (en) * 1982-06-01 1984-10-09 United Technologies Corporation Solid state production of multiple single crystal articles
JP2003147464A (en) * 2001-11-02 2003-05-21 Tocalo Co Ltd Member with high-temperature strength
US6696176B2 (en) * 2002-03-06 2004-02-24 Siemens Westinghouse Power Corporation Superalloy material with improved weldability
DE10356562A1 (en) * 2003-12-04 2005-06-30 Mtu Aero Engines Gmbh Solder alloy, use of the solder alloy and method for machining, in particular repair, of workpieces, in particular gas turbine components
EP1790744A1 (en) * 2005-11-28 2007-05-30 Siemens Aktiengesellschaft Method for repairing cracks in components and brazing alloy for brazing of components
EP1835040A1 (en) * 2006-03-17 2007-09-19 Siemens Aktiengesellschaft Welding material, use of the welding material and method of welding a structural component
EP2182084A1 (en) * 2008-11-04 2010-05-05 Siemens Aktiengesellschaft Welding filler material, use of the welding filler material and component
EP2248923A1 (en) * 2009-04-27 2010-11-10 Siemens Aktiengesellschaft Nickel base y/ý superalloy with multiple reactive elements and use of said superalloy in complex material systems
EP2546021A1 (en) * 2011-07-12 2013-01-16 Siemens Aktiengesellschaft Nickel-based alloy, use and method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2015135702A1 *

Also Published As

Publication number Publication date
WO2015135702A1 (en) 2015-09-17
DE102014204408A1 (en) 2015-09-17
US20170239759A1 (en) 2017-08-24

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