EP0196447A1 - 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

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Publication number
EP0196447A1
EP0196447A1 EP86102345A EP86102345A EP0196447A1 EP 0196447 A1 EP0196447 A1 EP 0196447A1 EP 86102345 A EP86102345 A EP 86102345A EP 86102345 A EP86102345 A EP 86102345A EP 0196447 A1 EP0196447 A1 EP 0196447A1
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EP
European Patent Office
Prior art keywords
temperature
zone
component
recrystallization
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.)
Granted
Application number
EP86102345A
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German (de)
English (en)
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EP0196447B1 (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
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BBC Brown Boveri AG Switzerland
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Application filed by BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Publication of EP0196447A1 publication Critical patent/EP0196447A1/fr
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Publication of EP0196447B1 publication Critical patent/EP0196447B1/fr
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    • 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.
  • 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 5uperalloys, Confe rence 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.
  • FIG. 1 schematically shows a micrograph of a component in the delivery state when the surface zone is treated by a shot peening.
  • 1 is the medium to fine-grained structure of pieces in the delivery state (eg extruded, rolled or forged product). The grain size is generally not very critical. However, the structure is tied to the condition that there is sufficient driving force to form coarse grains after the final recrystallization annealing sits.
  • 2 is a shot peening which serves to cold-deform the surface
  • FIG. 3 represents the surface zone of the workpiece which has already been deformed by shot peening. The direction of advance of the ball jet 2 is indicated by an arrow.
  • Fig. 2 contains a schematic micrograph of a component treated according to Fig. 1, i.e. after treatment of the surface zone by shot peening and after an additional recrystallization annealing.
  • 4 represents the coarse-grained recrystallized core zone
  • 5 the fine-grained recrystallized, previously deformed surface zone.
  • FIG. 3 schematically shows a micrograph of a component in the delivery state and during the thermal treatment of the surface zone.
  • the workpiece has a fine-grained structure.
  • the core zone 6 is kept at a lower temperature during the treatment, while the surface zone 7 is heated to a higher temperature.
  • a laser beam 9 (indicated as h ⁇ in the left half of the figure) or an electric arc 10 (indicated as current I in the right half of the figure) is used.
  • the direction of advance of 9 or 10 is indicated by an arrow. 8 shows the workpiece surface.
  • FIG. 4 shows a diagram of the temperature distribution over the workpiece cross section (abscissa x) in the heat treatment according to FIG. 3 and in the recrystallization annealing.
  • Curve a represents the course of the heat treatment temperature over the workpiece cross section. In the actual core zone 6, the temperature should be comparatively low, in the present case below 900 ° C. being held.
  • the surface zone 7 is to be heated to a temperature which is still below the recrystallization temperature, for example to 1140 ° C.
  • the lateral limitation of the component is indicated by the vertical workpiece surface 8.
  • Curve b represents the course of the recrystallization temperature over the workpiece cross section, which is generally given by a horizontal.
  • Fig. 5 shows a schematic micrograph of a component after the treatment of the surface zone according to Fig. 3, i.e. after laser beam or arc heating and after recrystallization annealing.
  • the fine-grain recrystallized surface zone 5 stands out from the coarse-grain recrystallized core zone 4.
  • 6 schematically shows a micrograph of a component in the delivery state with an electrolytically applied nickel layer.
  • 12 is the fine-grained material structure in the delivery state.
  • 11 is the electrolytically applied nickel layer, which is markedly exaggerated in thickness.
  • FIG. 7 shows a schematic micrograph through a component with a nickel layer after diffusion annealing. 12 is the unchanged fine-grained material structure, 13 the surface zone of the workpiece enriched in nickel by diffusion.
  • FIG. 8 schematically shows a micrograph through a component with a nickel layer after diffusion and recrystallization annealing.
  • the coarse-grained recrystallized core zone 4 is first followed by the fine-grained one recrystallized surface zone 5 and finally the actual, nickel-rich surface layer 14, which may still consist of pure nickel on the workpiece surface.
  • FIG. 9 shows a schematic micrograph of a component after diffusion and recrystallization annealing according to FIG. 8, after additional removal of the nickel-rich surface layer 14.
  • the remaining reference numerals correspond to those in FIG. 8.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat Treatment Of Articles (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Powder Metallurgy (AREA)
  • Electroplating Methods And Accessories (AREA)
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
CH1166/85 1985-03-15
CH116685 1985-03-15

Publications (2)

Publication Number Publication Date
EP0196447A1 true EP0196447A1 (fr) 1986-10-08
EP0196447B1 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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988007587A1 (fr) * 1987-03-27 1988-10-06 Mre Corporation Appareil et procedes de formage de materiaux de resistance variable par deformation rapide
WO1988007588A1 (fr) * 1987-03-27 1988-10-06 Mre Corporation Materiaux de resistance variable formes par deformation rapide

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE19756354B4 (de) * 1997-12-18 2007-03-01 Alstom Schaufel und Verfahren zur Herstellung der Schaufel
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
JP2005510627A (ja) * 2001-11-23 2005-04-21 インテグラン テクノロジーズ インク． ニッケル・鉄・クロムを主成分とするオーステナイト系合金の表面処理
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
DE502006002572D1 (de) * 2006-01-24 2009-02-26 Siemens Ag Bauteilreparaturverfahren
US8051565B2 (en) 2006-12-30 2011-11-08 General Electric Company Method for increasing fatigue notch capability of airfoils
US8079120B2 (en) 2006-12-30 2011-12-20 General Electric Company Method for determining initial burnishing parameters
CN102712078B (zh) * 2009-11-25 2015-05-20 康宁股份有限公司 制备抗蠕变难熔金属结构的方法
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
WO2015116352A1 (fr) * 2014-01-28 2015-08-06 United Technologies Corporation Structure de surface améliorée
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

Citations (5)

* 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
DE2740569A1 (de) * 1976-09-13 1978-03-16 Ford Werke Ag Oberflaechenlegierungs- und waermebehandlungsverfahren
DE2951102A1 (de) * 1978-12-22 1980-06-26 Gen Electric Verfahren zum behandeln eines koerpers aus einer zirkoniumlegierung zur verbesserung seiner korrosionsbestaendigkeit
FR2444086A1 (fr) * 1978-12-15 1980-07-11 Westinghouse Electric Corp Procede pour fabriquer des produits manufactures en superalliage a base de nickel presentant une structure mixte du grain
EP0115092A2 (fr) * 1983-02-01 1984-08-08 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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015100A (en) * 1974-01-07 1977-03-29 Avco Everett Research Laboratory, Inc. Surface modification

Patent Citations (5)

* 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
DE2740569A1 (de) * 1976-09-13 1978-03-16 Ford Werke Ag Oberflaechenlegierungs- und waermebehandlungsverfahren
FR2444086A1 (fr) * 1978-12-15 1980-07-11 Westinghouse Electric Corp Procede pour fabriquer des produits manufactures en superalliage a base de nickel presentant une structure mixte du grain
DE2951102A1 (de) * 1978-12-22 1980-06-26 Gen Electric Verfahren zum behandeln eines koerpers aus einer zirkoniumlegierung zur verbesserung seiner korrosionsbestaendigkeit
EP0115092A2 (fr) * 1983-02-01 1984-08-08 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HIGH TEMPERATURE TECHNOLOGY, Band 3, Nr. 1, Februar 1985, Seiten 29-33, Butterworth & CO (Publishers) Ltd; M.F. CHEN et al.: "Elimination of u phase and improvement of hot corrosion resistance of a nickel-base superalloy by laserglazing" *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988007587A1 (fr) * 1987-03-27 1988-10-06 Mre Corporation Appareil et procedes de formage de materiaux de resistance variable par deformation rapide
WO1988007588A1 (fr) * 1987-03-27 1988-10-06 Mre Corporation Materiaux de resistance variable formes par deformation rapide
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

Also Published As

Publication number Publication date
US4909859A (en) 1990-03-20
DE3664930D1 (en) 1989-09-14
JPS61213360A (ja) 1986-09-22
EP0196447B1 (fr) 1989-08-09

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