EP3024955A1 - Superalliage à base de cobalt durci gamma/gamma', poudre et composant - Google Patents

Superalliage à base de cobalt durci gamma/gamma', poudre et composant

Info

Publication number
EP3024955A1
EP3024955A1 EP14806621.0A EP14806621A EP3024955A1 EP 3024955 A1 EP3024955 A1 EP 3024955A1 EP 14806621 A EP14806621 A EP 14806621A EP 3024955 A1 EP3024955 A1 EP 3024955A1
Authority
EP
European Patent Office
Prior art keywords
nickel
gamma
cobalt
alloy according
tantalum
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Withdrawn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
EP14806621.0A
Other languages
German (de)
English (en)
Inventor
Christian Gindorf
Philipp NÖRTERSHÄUSER
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 EP3024955A1 publication Critical patent/EP3024955A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • 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 ⁇ / ⁇ ⁇ hardened cobalt base super ⁇ alloy for high temperature applications, a powder and component.
  • Cobalt-based alloys used which have only two solidification mechanisms (solid solution and carbide). A precipitation hardening by intermetallic phases could not be realized for the technical application so far.
  • the homologous temperature plays an important role. Diffusion processes, which significantly influence the high-temperature resistance, must be considered from half the melting point. Nickel-base superalloys are now at temperatures of up to 80% of the melting point (melting point of pure nickel: 1718K) was used, and therefore more platforms ⁇ approximations of the operating temperatures of the alloys are difficult to achieve. The operating temperatures, however, play an important role since they determine the Carnot efficiency in the gas turbine sector. Another important high-temperature alloy class is conventional cobalt-based alloys (melting point pure cobalt: 1768K).
  • nickel base superalloys conventional cobalt-base alloys were ⁇ firstly at high temperatures and voltages, and the other at very high temperatures and low voltages.
  • Conventional cobalt-based alloys unlike nickel-base superalloys, are considered better castable and weldable.
  • the object is achieved by an alloy according to claim 1, a powder according to claim 10 and a device according to ⁇ demanding. 11
  • the cobalt-based superalloy is well castable and weldable and has good mechanical properties at high tempera ⁇ ren on.
  • Ni 18 - 23 enlarges alloy window
  • a cobalt base superalloy having the following target composition (at.%) Co-21Ni-9W-9Al-2i-2 a-6Cr.
  • the proposed alloy composition aims at a higher operating temperature and / or longer service life at the same operating temperatures. This is achieved by combining the advantages of the nickel base superalloys and the conventional cobalt base superalloys to arrive at the new class of cobalt base superalloys.
  • Cobalt provides as a basic element, an increase of 50K melting ⁇ point than nickel.
  • an alloy composition which has all three above-described solidification mechanisms of the nickel-base superalloys and thus exceeds the conventional cobalt-based superalloys in terms of mechanical properties.
  • the properties of the cobalt superalloy (castability, weldability) that are favorable compared to nickel-base superalloys are retained.
  • a high-temperature material in a new alloy class is proposed that combines the good properties of the two alloy systems.
  • such cobalt-based superalloys for turbine blades or other gas turbine parts or
  • boron (B) and / or carbon (C) are preferably used.
  • a directionally solidified structure (monocrystalline, collodally solidified)
  • an alloy without boron (B) and / or without carbon (C) is used.
  • B boron
  • C carbon
  • no further elements are needed.

Landscapes

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

Abstract

Un superalliage à base de cobalt permet l'obtention de composants faciles à couler et faciles à souder qui peuvent également être employés à des températures très élevées.
EP14806621.0A 2013-12-05 2014-12-03 Superalliage à base de cobalt durci gamma/gamma', poudre et composant Withdrawn EP3024955A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013224989.6A DE102013224989A1 (de) 2013-12-05 2013-12-05 Gamma/Gamma gehärtete Kobaltbasis-Superlegierung, Pulver und Bauteil
PCT/EP2014/076352 WO2015082518A1 (fr) 2013-12-05 2014-12-03 Superalliage à base de cobalt durci gamma/gamma', poudre et composant

Publications (1)

Publication Number Publication Date
EP3024955A1 true EP3024955A1 (fr) 2016-06-01

Family

ID=52007017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14806621.0A Withdrawn EP3024955A1 (fr) 2013-12-05 2014-12-03 Superalliage à base de cobalt durci gamma/gamma', poudre et composant

Country Status (6)

Country Link
US (1) US20160281194A1 (fr)
EP (1) EP3024955A1 (fr)
KR (1) KR20160083068A (fr)
CN (1) CN105793448A (fr)
DE (1) DE102013224989A1 (fr)
WO (1) WO2015082518A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016200135A1 (de) * 2016-01-08 2017-07-13 Siemens Aktiengesellschaft Gamma, Gamma'-kobaltbasierte Legierungen für additive Fertigungsverfahren oder Löten, Schweißen, Pulver und Bauteil
CN107326221B (zh) * 2017-06-30 2018-11-23 西南交通大学 钴基合金及其所述钴基合金制备的熔覆层
CN108315600B (zh) * 2018-04-12 2020-04-10 北京科技大学 一种γ＇相强化钴基高温合金及其制备方法
DE102018208736A1 (de) * 2018-06-04 2019-12-05 Siemens Aktiengesellschaft Y, Y' gehärtete Kobalt-Nickel-Basislegierung, Pulver, Komponente und Verfahren
DE102018208737A1 (de) * 2018-06-04 2019-12-05 Siemens Aktiengesellschaft Y, Y` gehärtete Kobalt-Nickel-Basislegierung, Pulver, Komponente und Verfahren

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877930A (en) * 1973-01-29 1975-04-15 Int Nickel Co Organic interdispersion cold bonding control agents for use in mechanical alloying
US3844847A (en) * 1973-09-11 1974-10-29 Int Nickel Co Thermomechanical processing of mechanically alloyed materials
US4160854A (en) * 1978-07-19 1979-07-10 Western Gold & Platinum Co. Ductile brazing foil for cast superalloys
US4365994A (en) * 1979-03-23 1982-12-28 Allied Corporation Complex boride particle containing alloys
US4594104A (en) * 1985-04-26 1986-06-10 Allied Corporation Consolidated articles produced from heat treated amorphous bulk parts
JPH0681086A (ja) * 1992-09-03 1994-03-22 Hitachi Metals Ltd 耐蝕性に優れた超微細結晶粒組織を有する合金
JPH0754108A (ja) * 1993-08-09 1995-02-28 Toshiba Corp 恒透磁率性を有する磁性合金とその製造方法、およびそれを用いた磁心
KR100812943B1 (ko) * 2003-08-05 2008-03-11 닛코킨조쿠 가부시키가이샤 스퍼터링 타겟트 및 그 제조방법
CH699456A1 (de) * 2008-09-08 2010-03-15 Alstom Technology Ltd Hochtemperaturbeständige Kobaltbasis-Superlegierung.
US20110268989A1 (en) * 2010-04-29 2011-11-03 General Electric Company Cobalt-nickel superalloys, and related articles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2015082518A1 *

Also Published As

Publication number Publication date
DE102013224989A1 (de) 2015-06-11
CN105793448A (zh) 2016-07-20
US20160281194A1 (en) 2016-09-29
KR20160083068A (ko) 2016-07-11
WO2015082518A1 (fr) 2015-06-11

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