EP0196447B1 - Procédé pour l'amélioration de la résistance à l'oxydation et à la corrosion par un traitement de surface d'un article en un superalliage renforcé par dispersion - Google Patents

Procédé pour l'amélioration de la résistance à l'oxydation et à la corrosion par un traitement de surface d'un article en un superalliage renforcé par dispersion Download PDF

Info

Publication number
EP0196447B1
EP0196447B1 EP86102345A EP86102345A EP0196447B1 EP 0196447 B1 EP0196447 B1 EP 0196447B1 EP 86102345 A EP86102345 A EP 86102345A EP 86102345 A EP86102345 A EP 86102345A EP 0196447 B1 EP0196447 B1 EP 0196447B1
Authority
EP
European Patent Office
Prior art keywords
component
zone
recrystallization
fine
grained
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.)
Expired
Application number
EP86102345A
Other languages
German (de)
English (en)
Other versions
EP0196447A1 (fr
Inventor
Mohamed Yousef Dr. Nazmy
Hans Dr. Rydstad
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.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
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 BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Publication of EP0196447A1 publication Critical patent/EP0196447A1/fr
Application granted granted Critical
Publication of EP0196447B1 publication Critical patent/EP0196447B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F3/00—Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S148/00—Metal treatment
    • Y10S148/902—Metal treatment having portions of differing metallurgical properties or characteristics
    • Y10S148/903—Directly treated with high energy electromagnetic waves or particles, e.g. laser, electron beam

Definitions

  • the invention is based on a method for increasing the oxidation and corrosion resistance of a component made of a dispersion-hardened superalloy according to the preamble of claim 1 and claim 4.
  • High-temperature alloys especially superalloys, especially those with hardening dispersoids, are used under strict conditions regarding temperature, mechanical stress and corrosive or oxidizing atmosphere.
  • attempts are being made to increase their resistance to oxidation and corrosion by alloying with suitable elements or by applying protective layers.
  • these materials are used almost exclusively in the coarse-grained, preferably in the elongated, coarse-grained state (E. Auto and RF Singer, The effect of grain shape on stress rupture of the oxide dispersion strengthened superalloy INCONEL MA 6000, Seven Spring Conference on Superalloys, Conference Proceedings, The Metallurgical Society of AIME, 1984, pp. 367-376).
  • the invention has for its object to provide a method for increasing the oxidation and corrosion resistance of components made of a dispersion-hardened superalloy by means of a surface treatment, which does not affect the monolithic connection, is characterized by optimal properties of the surface layer and is simple on the finished component can be carried out economically.
  • a prismatic test specimen 100 mm long, 40 mm wide and 40 mm thick was cut from a medium-sized forging bar made of a dispersion-hardened nickel-based superalloy.
  • the alloy known under the trade name MA 6000 (INCO) had the following composition:
  • the surface zone 3 of a long side of the prismatic body was deformed over its entire width and over a length of 60 mm with a shot peening 2.
  • the pressure during shot peening was 0.8 MPa
  • the diameter of the steel balls was 0.3 to 0.6 mm
  • the total blasting time for the entire surface was 5 minutes.
  • the body was annealed at 1 280 ° C for 1 h.
  • the coarse-grain recrystallized core zone 4 had stalk-like elongated crystallites of 12 to 15 mm in length and 4 to 6 mm in width, while the fine-grain recrystallized surface zone 5 of 200 ⁇ m depth had an average grain size of less than 2 ⁇ m.
  • Fine-grained surface zones 5 of approximately 100 to 200 ⁇ m thick can be produced in the manner described.
  • the operating parameters for shot peening vary depending on the alloy to be treated, the structural condition of the starting material and the thickness of the fine-grained surface zone to be produced.
  • the sheet metal section was subjected to a one-time cold rolling process, with a total decrease in thickness from originally 4 mm to 3.9 mm (2.5%). This cold deformation mainly took place in the surface zones of the sheet.
  • the sheet section was subjected to recrystallization annealing at a temperature of 1,330 ° C. for 1/2 hour.
  • the coarse-grained recrystallized core zone showed elongated crystallites with an average length of 6 to 8 mm in length, 2 mm in width and 1 mm in thickness, while the fine-grained recrystallized surface zones with a depth of 150 ⁇ m had grain sizes of 2 to 5 ⁇ m.
  • the degree of cold deformation during rolling, rolling, pressing etc. can advantageously be set in such a way that it corresponds to a reduction in thickness of approximately 2 to 5% for such sheet, strip and sheet-shaped workpieces.
  • a turbine blade was manufactured from the material called MA 6000 (workpiece structure 12 in fine-grained condition).
  • the airfoil designed as a wing profile had a length of 220 mm, a width of 70 mm and a profile depth of 18 mm, with a max. Thickness of 12 mm.
  • the component was first cleaned, degreased and then hung in an electrochemical nickel bath.
  • a nickel layer 11 with a thickness of 50 ⁇ m was applied to the surface in a galvanic manner.
  • the workpiece was then subjected to diffusion annealing under a protective gas atmosphere at a temperature of 1,020 ° C. for 6 hours. This resulted in the surface zone 13 enriched with nickel.
  • the diffusion of nickel into the base material caused a certain grain growth, which can be influenced by the thickness of the nickel layer, the diffusion temperature and the diffusion time.
  • the diffusion layer reached an average thickness of 200 ⁇ m.
  • the controlled grain growth during the diffusion process had the result that the recrystallization annealing carried out subsequently according to Example I at 1 280 ° C./1 h resulted in a coarse-grained recrystallized core zone 4, while the surface zone 5 was obtained fine-grained. Extremely, there was still a thin, unchanged nickel-rich surface layer 14 as the rest. This surface layer 14 was finally removed electrolytically (see FIG. 9).
  • Nickel layers 11 can advantageously have a thickness of 10 to 50 ⁇ m. Diffusion annealing for the material MA 6000 can be carried out at temperatures between approx. 1 000 and 1 050 ° C for approx. 4 to 10 h.
  • the invention is not restricted to the exemplary embodiments.
  • the cold deformation of the surface can be carried out in addition to shot peening, surface rolling and pressing, drawing, thinning (in the case of hollow bodies) or in any other manner known per se.
  • the recrystallization annealing must be carried out in the range between the recrystallization and solidus temperature.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Heat Treatment Of Articles (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Powder Metallurgy (AREA)
  • Electroplating Methods And Accessories (AREA)

Claims (4)

1. Procédé pour l'amélioration de la résistance à l'oxydation et à la corrosion d'une pièce en un superalliage durci par dispersion, au moyen d'un traitement de surface, caractérisé en ce que, indépendamment de l'état structural du matériau de départ, la pièce est soumise à un traitement de surface par déformation à froid, dans lequel le taux de déformation à froid dans la zone superficielle (3) est choisi de telle façon que, lors du traitement thermique qui suit, la force motrice disponible conduise à une structure à grain fin, tandis que la zone centrale (4) est forcée de former des gros grains, et en ce que la pièce est soumise à un recuit de recristallisation dans le domaine de température situé au-dessus de la température de recristallisation et en dessous de la température de solidus.
2.- Procédé suivant la revendication 1, caractérisé en ce que la déformation à froid de la zone superficielle (3, 5) est réalisée au moyen d'un jet de billes (2).
3. Procédé suivant la revendication 1, caractérisé en ce que la déformation à froid de la zone superficielle (5) est réalisée par laminage de surface ou par compression.
4. Procédé pour l'amélioration de la résistance à l'oxydation et à la corrosion d'une pièce en un superalliage durci par dispersion, au moyen d'un traitement de surface, caractérisé en ce que, partant d'un état structural à grain fin du matériau de départ préalablement corroyé à chaud, la pièce est pourvue d'une couche de nickel (11) d'une épaisseur de 10 à 50 µm, à déposer par voie galvanique, et est ensuite portée à une température située sous la température de recristallisation du matériau dans le but de provoquer la diffusion du nickel à l'intérieur et de produire une zone superficielle (13) enrichie en nickel, en ce que la pièce est refroidie et ensuite réchauffée jusqu'à une température située au-dessus de la température de recristallisation, la zone centrale (4) étant obligée de former des gros grains tandis que la zone superficielle (5) est empêchée de subir une recristallisation secondaire en raison d'un manque de force motrice et est ainsi obligée de conserver la structure initiale à grain fin.
EP86102345A 1985-03-15 1986-02-24 Procédé pour l'amélioration de la résistance à l'oxydation et à la corrosion par un traitement de surface d'un article en un superalliage renforcé par dispersion Expired EP0196447B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH116685 1985-03-15
CH1166/85 1985-03-15

Publications (2)

Publication Number Publication Date
EP0196447A1 EP0196447A1 (fr) 1986-10-08
EP0196447B1 true EP0196447B1 (fr) 1989-08-09

Family

ID=4204017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86102345A Expired EP0196447B1 (fr) 1985-03-15 1986-02-24 Procédé pour l'amélioration de la résistance à l'oxydation et à la corrosion par un traitement de surface d'un article en un superalliage renforcé par dispersion

Country Status (4)

Country Link
US (1) US4909859A (fr)
EP (1) EP0196447B1 (fr)
JP (1) JPS61213360A (fr)
DE (1) DE3664930D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19756354B4 (de) * 1997-12-18 2007-03-01 Alstom Schaufel und Verfahren zur Herstellung der Schaufel

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4830683A (en) * 1987-03-27 1989-05-16 Mre Corporation Apparatus for forming variable strength materials through rapid deformation and methods for use therein
US4874644A (en) * 1987-03-27 1989-10-17 Mre Corporation Variable strength materials formed through rapid deformation
US5286315A (en) * 1989-03-30 1994-02-15 Nippon Steel Corporation Process for preparing rollable metal sheet from quenched solidified thin cast sheet as starting material
GB2257163B (en) * 1991-07-02 1995-04-05 Res & Dev Min Def Gov In A process for improving fatigue crack growth resistance
US5236524A (en) * 1992-01-21 1993-08-17 The Babcock & Wilcox Company Method for improving the corrosion resistance of a zirconium-based material by laser beam
US5447580A (en) * 1994-02-23 1995-09-05 The United States Of America As Represented By The Secretary Of The Air Force Rapid heat treatment of nonferrous metals and alloys to obtain graded microstructures
JP2877013B2 (ja) * 1994-05-25 1999-03-31 株式会社神戸製鋼所 耐摩耗性に優れた表面処理金属部材およびその製法
US6098871A (en) * 1997-07-22 2000-08-08 United Technologies Corporation Process for bonding metallic members using localized rapid heating
US6027564A (en) * 1997-09-23 2000-02-22 American Superconductor Corporation Low vacuum vapor process for producing epitaxial layers
US6022832A (en) 1997-09-23 2000-02-08 American Superconductor Corporation Low vacuum vapor process for producing superconductor articles with epitaxial layers
US6428635B1 (en) 1997-10-01 2002-08-06 American Superconductor Corporation Substrates for superconductors
US6458223B1 (en) 1997-10-01 2002-10-01 American Superconductor Corporation Alloy materials
AT408088B (de) * 1997-10-14 2001-08-27 Berndorf Band Ges M B H & Co K Endloses stahlband und verfahren zur herstellung desselben
US6475311B1 (en) 1999-03-31 2002-11-05 American Superconductor Corporation Alloy materials
US6874214B1 (en) 2000-05-30 2005-04-05 Meritor Suspension Systems Company Anti-corrosion coating applied during shot peening process
AU2002220411A1 (en) * 2001-11-23 2003-06-10 Integran Technologies Inc. Surface treatment of austenitic ni-fe-cr based alloys
EP1437426A1 (fr) * 2003-01-10 2004-07-14 Siemens Aktiengesellschaft Procédé de production des structures monocristallines
US7229253B2 (en) * 2004-11-30 2007-06-12 General Electric Company Fatigue-resistant components and method therefor
US20070122560A1 (en) * 2005-11-30 2007-05-31 Honeywell International, Inc. Solid-free-form fabrication process including in-process component deformation
EP1816316B1 (fr) * 2006-01-24 2009-01-07 Siemens Aktiengesellschaft Procédé de réparation de composants
US8079120B2 (en) 2006-12-30 2011-12-20 General Electric Company Method for determining initial burnishing parameters
US8051565B2 (en) 2006-12-30 2011-11-08 General Electric Company Method for increasing fatigue notch capability of airfoils
KR101900506B1 (ko) * 2009-11-25 2018-09-19 코닝 인코포레이티드 내크리프성의 내화성 금속 구조 제조방법
JP5998950B2 (ja) * 2013-01-24 2016-09-28 新日鐵住金株式会社 オーステナイト系耐熱合金部材
JP6048169B2 (ja) * 2013-01-29 2016-12-21 新日鐵住金株式会社 オーステナイト系耐熱合金部材およびオーステナイト系耐熱合金素材
US20160333434A1 (en) * 2014-01-28 2016-11-17 United Technologies Corporation Enhanced surface structure
CN108950144A (zh) * 2018-07-13 2018-12-07 重庆理工大学 激光表面改性奥氏体不锈钢的方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366515A (en) * 1965-03-19 1968-01-30 Sherritt Gordon Mines Ltd Working cycle for dispersion strengthened materials
US4015100A (en) * 1974-01-07 1977-03-29 Avco Everett Research Laboratory, Inc. Surface modification
US4157923A (en) * 1976-09-13 1979-06-12 Ford Motor Company Surface alloying and heat treating processes
GB2043116A (en) * 1978-12-15 1980-10-01 Westinghouse Electric Corp Producing a composite grain structure in nickel-base superalloy articles
US4294631A (en) * 1978-12-22 1981-10-13 General Electric Company Surface corrosion inhibition of zirconium alloys by laser surface β-quenching
EP0115092B1 (fr) * 1983-02-01 1987-08-12 BBC Brown Boveri AG Elément de construction à résistance élevée contre la corrosion et l'oxydation, réalisé en un superalliage à durcissement par dispersion et procédé pour sa fabrication

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19756354B4 (de) * 1997-12-18 2007-03-01 Alstom Schaufel und Verfahren zur Herstellung der Schaufel

Also Published As

Publication number Publication date
US4909859A (en) 1990-03-20
JPS61213360A (ja) 1986-09-22
EP0196447A1 (fr) 1986-10-08
DE3664930D1 (en) 1989-09-14

Similar Documents

Publication Publication Date Title
EP0196447B1 (fr) Procédé pour l'amélioration de la résistance à l'oxydation et à la corrosion par un traitement de surface d'un article en un superalliage renforcé par dispersion
DE3445767C2 (fr)
EP0513407B1 (fr) Procédé de fabrication d' une aube de turbine
EP0155490B1 (fr) Procédé pour lier des pièces en super-alliage par diffusion
DE69203791T2 (de) Verfahren zur Herstellung eines Werkstuckes aus einer Titanlegierung mit einer modifizierten Warmverarbeitungsstufe und hergestelltes Werkstuck.
DE69017574T2 (de) Hochfestes ermüdungsrissbeständiges Legierungswerkstück.
EP0290898B1 (fr) Procédé de fabrication de pièces de dimensions quelconques en superalliage à base de nickel durci par dispersion d'oxydes à cristaux basaltiques grossiers orientés
DE3445768C2 (fr)
DE69017339T2 (de) Kriech-, bruchbelastungs- und dauerermüdungsrissbeständige Legierungen.
DE60313065T2 (de) Dünne Produkte aus Beta- oder quasi Beta-Titan-Legierungen, Herstellung durch Schmieden
DE3411762C2 (fr)
EP0115092B1 (fr) Elément de construction à résistance élevée contre la corrosion et l'oxydation, réalisé en un superalliage à durcissement par dispersion et procédé pour sa fabrication
DE19756354B4 (de) Schaufel und Verfahren zur Herstellung der Schaufel
EP0205859A1 (fr) Procédé pour relier des éléments de construction en superalliages endurcis par précipitation, par la méthode de liaison par compression
DE3816310A1 (de) Verfahren zur anreicherung von titan in der unmittelbaren oberflaechenzone eines bauteils aus einer mindestens 2,0 gew.-% titan enthaltenden nickelbasis-superlegierung und verwendung der nach dem verfahren angereicherten oberflaeche
DE3784204T2 (de) Thermomechanisches verfahren zur herstellung einer dauerbruchbestaendigen nickelbasissuperlegierung und nach dem verfahren hergestelltes erzeugnis.
DE69229596T2 (de) Hochfeste edelstahlfolie zum wellen und verfahren zur herstellung der folie
DE2550858C3 (de) Verfahren zur Herstellung und/oder Wärmebehandlung von metallischen Form-
EP0274631B1 (fr) Procédé pour augmenter la ductilité à température ambiante d'une pièce en superalliage à base de nickel durci par dispersion d'oxyde et formée de grains basaltiques grossiers orientés longitudinalement
DE2822153C2 (de) Verfahren zum Herstellen von Formstücken
DE1558805A1 (de) Verfahren zur Bearbeitung von durch Dispersion verstaerkten Metallen und Metallegierungen
EP0090887B1 (fr) Procédé pour la jonction par diffusion de matériaux résistant au fluage à température élevée
DE69709737T2 (de) Verfahren zur bearbeitung von werkstücken aus mehrphasigen legierungen
EP1442150B1 (fr) Alliages aluminium-silicium possedant des proprietes mecaniques ameliorees
EP0045984B1 (fr) Procédé pour la fabrication de pièces en un alliage résistant aux températures élevées

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB LI

17P Request for examination filed

Effective date: 19870217

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BBC BROWN BOVERI AG

17Q First examination report despatched

Effective date: 19880414

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB LI

REF Corresponds to:

Ref document number: 3664930

Country of ref document: DE

Date of ref document: 19890914

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19910524

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19920229

Ref country code: CH

Effective date: 19920229

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19930113

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19930120

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19930421

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19940224

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19940224

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19941031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19941101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST