FR2380354A1 - Softening and joining of superalloys - by heating in atmos. contg. hydrogen halide to decarburise and join surfaces by diffusion - Google Patents

Softening and joining of superalloys - by heating in atmos. contg. hydrogen halide to decarburise and join surfaces by diffusion

Info

Publication number
FR2380354A1
FR2380354A1 FR7703585A FR7703585A FR2380354A1 FR 2380354 A1 FR2380354 A1 FR 2380354A1 FR 7703585 A FR7703585 A FR 7703585A FR 7703585 A FR7703585 A FR 7703585A FR 2380354 A1 FR2380354 A1 FR 2380354A1
Authority
FR
France
Prior art keywords
contg
decarburise
atmos
softening
heating
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
FR7703585A
Other languages
French (fr)
Other versions
FR2380354B1 (en
Inventor
Dominique Jean-Louis Billard
Jean-Pierre Trottier
Georges Sion Slam
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.)
Association pour la Recherche et le Developpement des Methodes et Processus Industriels
Original Assignee
Association pour la Recherche et le Developpement des Methodes et Processus Industriels
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 Association pour la Recherche et le Developpement des Methodes et Processus Industriels filed Critical Association pour la Recherche et le Developpement des Methodes et Processus Industriels
Priority to FR7703585A priority Critical patent/FR2380354A1/en
Publication of FR2380354A1 publication Critical patent/FR2380354A1/en
Application granted granted Critical
Publication of FR2380354B1 publication Critical patent/FR2380354B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D3/00—Diffusion processes for extraction of non-metals; Furnaces therefor
    • 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
    • B22F1/14—Treatment of metallic powder
    • B22F1/145—Chemical treatment, e.g. passivation or decarburisation
    • 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
    • B23K35/001—Interlayers, transition pieces for metallurgical bonding of workpieces
    • B23K35/004—Interlayers, transition pieces for metallurgical bonding of workpieces at least one of the workpieces being of a metal of the iron group
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

Softening of large pieces or grains of powder of refractory super alloys contg. >=50 wt.% of Ni, Co, and/or Fe, contg C and additional metals forming at least ore hardening disperse phase, consists of heating the pieces in a hydrohalogenated atmos. with a water vapour content 10 ppm. to decarburise the surface and to remove from the surface hardening elements that form volatile stable halides. Used in the construction of tubro machines. Pieces of different shapes, or particles, can be made separately by powder moulding techniques, then surface softened, using the method of the invention, and finally joined together by form a more complex shape without expensive machinery.
FR7703585A 1977-02-09 1977-02-09 Softening and joining of superalloys - by heating in atmos. contg. hydrogen halide to decarburise and join surfaces by diffusion Granted FR2380354A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7703585A FR2380354A1 (en) 1977-02-09 1977-02-09 Softening and joining of superalloys - by heating in atmos. contg. hydrogen halide to decarburise and join surfaces by diffusion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7703585A FR2380354A1 (en) 1977-02-09 1977-02-09 Softening and joining of superalloys - by heating in atmos. contg. hydrogen halide to decarburise and join surfaces by diffusion

Publications (2)

Publication Number Publication Date
FR2380354A1 true FR2380354A1 (en) 1978-09-08
FR2380354B1 FR2380354B1 (en) 1980-03-07

Family

ID=9186497

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7703585A Granted FR2380354A1 (en) 1977-02-09 1977-02-09 Softening and joining of superalloys - by heating in atmos. contg. hydrogen halide to decarburise and join surfaces by diffusion

Country Status (1)

Country Link
FR (1) FR2380354A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436199A1 (en) * 1978-09-18 1980-04-11 Krupp Gmbh Hard metals with improved solderability - obtd. by electrolysis of hard metal in alkaline soln. to form surface free from carbide for use in soldered or brazed joint
FR2461757A1 (en) * 1979-07-23 1981-02-06 Gen Electric PROCESS FOR IMPROVING DUCTILITY, REFRIGERATION TEMPERATURE AND MECHANICAL STRENGTH OF FE, CO OR NI SOLDER ALLOY
FR2588789A1 (en) * 1985-10-18 1987-04-24 Armines METHOD OF ASSEMBLING AND DIFFUSING BONDING OF PARTS AND POWDERS OF METAL ALLOYS
US5000371A (en) * 1987-08-24 1991-03-19 Cooper Industries, Inc. Method of producing a metallic interface
EP0515078A2 (en) * 1991-05-21 1992-11-25 Cook Incorporated Bonding to nickel-titanium alloy
US5354623A (en) * 1991-05-21 1994-10-11 Cook Incorporated Joint, a laminate, and a method of preparing a nickel-titanium alloy member surface for bonding to another layer of metal
EP0813930A2 (en) * 1996-06-17 1997-12-29 General Electric Company Method for repairing a nickel base superalloy article
EP1076108A1 (en) * 1999-08-09 2001-02-14 ABB Alstom Power (Schweiz) AG Process for treating the surface of a component, made from a Ni based superalloy, to be coated
US6444053B1 (en) * 2000-02-28 2002-09-03 General Electric Co. Preparation of a nickle-based superalloy article containing a reactive element and having a decarburized surface and coating

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436199A1 (en) * 1978-09-18 1980-04-11 Krupp Gmbh Hard metals with improved solderability - obtd. by electrolysis of hard metal in alkaline soln. to form surface free from carbide for use in soldered or brazed joint
FR2461757A1 (en) * 1979-07-23 1981-02-06 Gen Electric PROCESS FOR IMPROVING DUCTILITY, REFRIGERATION TEMPERATURE AND MECHANICAL STRENGTH OF FE, CO OR NI SOLDER ALLOY
FR2588789A1 (en) * 1985-10-18 1987-04-24 Armines METHOD OF ASSEMBLING AND DIFFUSING BONDING OF PARTS AND POWDERS OF METAL ALLOYS
EP0228921A1 (en) * 1985-10-18 1987-07-15 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" Process for the diffusion bonding of metal work pieces and powders
US4724120A (en) * 1985-10-18 1988-02-09 Association Pour La Recherche Et Le Developpement Des Methodes Et Processus Industriels "A.R.M.I.N.E.S." Method for the assembly of and the interconnection by diffusion of bodies of metal alloys
US5000371A (en) * 1987-08-24 1991-03-19 Cooper Industries, Inc. Method of producing a metallic interface
EP0515078A2 (en) * 1991-05-21 1992-11-25 Cook Incorporated Bonding to nickel-titanium alloy
EP0515078A3 (en) * 1991-05-21 1994-07-13 Cook Inc Bonding to nickel-titanium alloy
US5354623A (en) * 1991-05-21 1994-10-11 Cook Incorporated Joint, a laminate, and a method of preparing a nickel-titanium alloy member surface for bonding to another layer of metal
EP0813930A2 (en) * 1996-06-17 1997-12-29 General Electric Company Method for repairing a nickel base superalloy article
EP0813930A3 (en) * 1996-06-17 2002-10-23 General Electric Company Method for repairing a nickel base superalloy article
EP1076108A1 (en) * 1999-08-09 2001-02-14 ABB Alstom Power (Schweiz) AG Process for treating the surface of a component, made from a Ni based superalloy, to be coated
US6440238B1 (en) 1999-08-09 2002-08-27 Alstom (Switzerland) Ltd Process for treating the surface of a component, made from a Ni based superalloy, to be coated
US6444053B1 (en) * 2000-02-28 2002-09-03 General Electric Co. Preparation of a nickle-based superalloy article containing a reactive element and having a decarburized surface and coating

Also Published As

Publication number Publication date
FR2380354B1 (en) 1980-03-07

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Legal Events

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