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 diffusionInfo
- 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
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.
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)
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 |
-
1977
- 1977-02-09 FR FR7703585A patent/FR2380354A1/en active Granted
Cited By (14)
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
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |