EP0186797A1 - Superlegierung auf Kobaltbasis und daraus hergestellte gegossene und geschweisste Bauteile für Gasturbinen - Google Patents

Superlegierung auf Kobaltbasis und daraus hergestellte gegossene und geschweisste Bauteile für Gasturbinen Download PDF

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Publication number
EP0186797A1
EP0186797A1 EP85115301A EP85115301A EP0186797A1 EP 0186797 A1 EP0186797 A1 EP 0186797A1 EP 85115301 A EP85115301 A EP 85115301A EP 85115301 A EP85115301 A EP 85115301A EP 0186797 A1 EP0186797 A1 EP 0186797A1
Authority
EP
European Patent Office
Prior art keywords
cobalt
gas turbine
carbon
superalloy
industrial gas
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
EP85115301A
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English (en)
French (fr)
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EP0186797B1 (de
Inventor
John Stuart Haydon
Adrian Maurice Beltran
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.)
General Electric Co
Original Assignee
General Electric Co
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Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Publication of EP0186797A1 publication Critical patent/EP0186797A1/de
Application granted granted Critical
Publication of EP0186797B1 publication Critical patent/EP0186797B1/de
Expired legal-status Critical Current

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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

Definitions

  • This invention relates generally to the superalloy branch of the metallurgical art, and is more specifically concerned with new cobalt-base superalloys having an unique combination of properties and consequent special utility in the production of both cast articles and welded structures, and with novel industrial gas turbine hot gas path components of those new alloys.
  • Cobalt-base superalloys disclosed and claimed in U.S. Patent No. 3,383,205 have superior ass33aiaars and het corrosion resistance and as a consequence have long been used extensively in commercial production of industrial gas turbine nozzles.
  • one of those superalloys is the current first stage nozzle alloy of the Gas Turbine Division of General Electric Company, the assignee hereof.
  • the creep rupture and fatigue strength of that alloy are marginal for new industrial gas turbine nozzle applications and in recognition of that fact, a program was launched to improve those properties without significantly diminishing the resistance of the superalloy either to oxidation or to hot corrosion. While the resulting superalloys met-those objectives as a consequence of their relatively high carbon contents (0.40 to 0.50%), they were still not the answer to the problem because of their inferior weldability and low tensile ductility.
  • columbium is preferably not used in vacuum melting practice involving the new superalloys of this invention.
  • the present invention is a cobalt-base superalloy having an unique combination of properties at high temperature and consequent special utility in the production of industrial gas turbine hot gas- path components, which alloy consists essentially of 0.3-0.6% carbon, 27-35% chromium, 9-16% nickel, 6-9% tungsten, up to 3% hafnium, .45-2.0% tantalum, up to .7% zirconium, up to .5% titanium, up to 1% columbium, manganese and silicon, up to .05%- boron, up to 2.0% iron, remainder essentially cobalt.
  • An additional important requirement is that the carbide-forming elements be so selected as to satisfy the relationship stated above and represented by the following equation:
  • the present invention is a cast cobalt-base superalloy industrial gas turbine nozzle consisting of the new alloy-set forth immediately above.
  • AIso. in this aspect the invention takes the form of transition pieces and shrouds, and of a fabricated cobalt-base superalloy gas turbine combustion chamber comprising a plurality of sheets of the said new alloy rolled and formed in predetermined shape and assembled and welded together.
  • the chromium content of these alloys is preferably targeted at 28-30% in recognition that departures in each direction can penalize alloy properties, specifically amounts less than about 27% result in loss of oxidation and hot corrosion resistance and amounts greater than about 35% result in loss of ductility without offsetting gain in either oxidation resistance or hot corrosion resistance.
  • the cast and fabricated bodies of this invention being components of industrial gas turbines are quite different from aircraft jet engine components especially iin respect to size and mass. Because of this, they represent problems unlike those of the relatively lighter weight counterparts such as marked cracking tendency associated with welding operations.
  • the first stage nozzle 10 of an industrial gas turbine shown in Fig. 1 is a casting of our preferred alloy composition produced by the injection molding and investment casting technique in general use in the art. Also, the shape and size and the design details of nozzle 10 essentially duplicate those features of the present standard first stage nozzle. Transition piece 20 similarly resembles that which has long been in general use in industrial gas turbines differing importantly, however, in that it is constructed of parts of an alloy of this invention welded together to provide a strong crack-free assembly of integrally bonded elements. Thus, bracket 22 is fitted in place on body 23 and welded securely an fluid tightly thereto.
  • the superalloys of this invention have ultimate tensile strengths equal to or better than the commercial superalloy of Example I and have creep rupture strength substantially greater than that commercial superalloy. Further it is apparent from Table I that these new superalloys have good room temperature tensile elongation characteristics and as Table II shows and Fig. 3 graphically illustrates, the weldability of the superalloys of this invention is superior to commercial superalloys A and E and even spectacularly so in the case of the superalloy of Example II which as indicated above is our present preferred embodiment of the invention.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Materials For Medical Uses (AREA)
EP85115301A 1984-12-04 1985-12-03 Superlegierung auf Kobaltbasis und daraus hergestellte gegossene und geschweisste Bauteile für Gasturbinen Expired EP0186797B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US67811884A 1984-12-04 1984-12-04
US678118 1984-12-04

Publications (2)

Publication Number Publication Date
EP0186797A1 true EP0186797A1 (de) 1986-07-09
EP0186797B1 EP0186797B1 (de) 1989-06-21

Family

ID=24721479

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85115301A Expired EP0186797B1 (de) 1984-12-04 1985-12-03 Superlegierung auf Kobaltbasis und daraus hergestellte gegossene und geschweisste Bauteile für Gasturbinen

Country Status (6)

Country Link
EP (1) EP0186797B1 (de)
JP (1) JPS61149450A (de)
CN (1) CN1011984B (de)
DE (1) DE3571146D1 (de)
IN (1) IN164571B (de)
NO (1) NO166542C (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2769024A1 (fr) * 1997-09-29 1999-04-02 Saint Gobain Isover Alliage a base de cobalt, article realise a partir de l'alliage et son procede de fabrication
US8252376B2 (en) * 2001-04-27 2012-08-28 Siemens Aktiengesellschaft Method for restoring the microstructure of a textured article and for refurbishing a gas turbine blade or vane
US20200139435A1 (en) * 2018-11-06 2020-05-07 Hamilton Sundstrand Corporation Cold spray forming

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602004022327D1 (de) 2003-11-25 2009-09-10 Kyocera Corp Keramisches heizelement und herstellungsverfahren dafür
JP2005158471A (ja) * 2003-11-25 2005-06-16 Kyocera Corp セラミックヒータおよびその製造方法
US6983599B2 (en) * 2004-02-12 2006-01-10 General Electric Company Combustor member and method for making a combustor assembly
US20070017906A1 (en) * 2005-06-30 2007-01-25 General Electric Company Shimmed laser beam welding process for joining superalloys for gas turbine applications
CN102021558B (zh) * 2009-09-09 2012-07-11 沈阳大陆激光技术有限公司 用于循环流化床锅炉水冷壁管激光熔覆涂层的合金粉末
CN108070742A (zh) * 2016-11-15 2018-05-25 中国科学院金属研究所 一种燃气轮机导向叶片用钴基高温合金及其制备方法和应用
EP3677697A1 (de) * 2019-01-07 2020-07-08 Siemens Aktiengesellschaft Co-legierung zur generativen fertigung und verfahren

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB891550A (en) * 1959-08-28 1962-03-14 Sierra Metals Corp Metal alloys
US3383205A (en) * 1964-12-14 1968-05-14 Gen Electric Cobalt base alloys
US3549356A (en) * 1969-01-06 1970-12-22 Gen Electric High temperature corrosive resistant cobalt-base alloys
FR2074104A5 (de) * 1969-12-22 1971-10-01 Cabot Corp
FR2273075A1 (de) * 1974-05-31 1975-12-26 Owens Corning Fiberglass Corp

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5582743A (en) * 1978-12-15 1980-06-21 Hitachi Ltd High-strength high-toughness cobalt alloy
JPS5582741A (en) * 1978-12-15 1980-06-21 Hitachi Ltd High-strength high-toughness cobalt alloy
JPS5582744A (en) * 1978-12-15 1980-06-21 Hitachi Ltd High-strength high-toughness cobalt alloy

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB891550A (en) * 1959-08-28 1962-03-14 Sierra Metals Corp Metal alloys
US3383205A (en) * 1964-12-14 1968-05-14 Gen Electric Cobalt base alloys
US3549356A (en) * 1969-01-06 1970-12-22 Gen Electric High temperature corrosive resistant cobalt-base alloys
FR2074104A5 (de) * 1969-12-22 1971-10-01 Cabot Corp
FR2273075A1 (de) * 1974-05-31 1975-12-26 Owens Corning Fiberglass Corp

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2769024A1 (fr) * 1997-09-29 1999-04-02 Saint Gobain Isover Alliage a base de cobalt, article realise a partir de l'alliage et son procede de fabrication
WO1999016919A1 (fr) * 1997-09-29 1999-04-08 Isover Saint-Gobain Alliage a base de cobalt, article realise a partir de l'alliage et son procede de fabrication
CN1094522C (zh) * 1997-09-29 2002-11-20 伊索福圣戈班公司 钴基合金,由该合金制得的制品
US8252376B2 (en) * 2001-04-27 2012-08-28 Siemens Aktiengesellschaft Method for restoring the microstructure of a textured article and for refurbishing a gas turbine blade or vane
US20200139435A1 (en) * 2018-11-06 2020-05-07 Hamilton Sundstrand Corporation Cold spray forming

Also Published As

Publication number Publication date
CN1011984B (zh) 1991-03-13
JPS61149450A (ja) 1986-07-08
NO166542B (no) 1991-04-29
NO854859L (no) 1986-06-05
JPH0459378B2 (de) 1992-09-22
CN85109085A (zh) 1986-08-20
DE3571146D1 (en) 1989-07-27
EP0186797B1 (de) 1989-06-21
IN164571B (de) 1989-04-15
NO166542C (no) 1991-08-07

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