GB1386808A - Alloy microstructure control - Google Patents

Alloy microstructure control

Info

Publication number
GB1386808A
GB1386808A GB1608472A GB1608472A GB1386808A GB 1386808 A GB1386808 A GB 1386808A GB 1608472 A GB1608472 A GB 1608472A GB 1608472 A GB1608472 A GB 1608472A GB 1386808 A GB1386808 A GB 1386808A
Authority
GB
United Kingdom
Prior art keywords
inch
alloy
gradient
heated
hour
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
GB1608472A
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
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 General Electric Co filed Critical General Electric Co
Publication of GB1386808A publication Critical patent/GB1386808A/en
Expired legal-status Critical Current

Links

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
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
    • C22F1/18—High-melting or refractory metals or alloys based thereon
    • C22F1/186—High-melting or refractory metals or alloys based thereon of zirconium or alloys based thereon
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
    • 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
    • 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
    • C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
    • C22F1/18—High-melting or refractory metals or alloys based thereon
    • C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B1/00—Single-crystal growth directly from the solid state
    • C30B1/02—Single-crystal growth directly from the solid state by thermal treatment, e.g. strain annealing
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
    • C30B29/10—Inorganic compounds or compositions
    • C30B29/52—Alloys

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Heat Treatment Of Nonferrous Metals Or Alloys (AREA)
  • Forging (AREA)
  • Powder Metallurgy (AREA)

Abstract

1386808 Heat-treating high temperature alloys GENERAL ELECTRIC CO 7 April 1972 [22 July 1971] 16084/72 Headings C7A and C7N A solid state process for producing a columnar grain structure consists of treating the alloy to develop a dislocation density such that when the alloy is heated to 50% to 100% of the incipient melting temperature in degrees Rankine it will develop a grain size the largest dimension of which is at least 200 microns, and then progressively heating the alloy into that range by passing through it a temperature gradient of at least 500‹F/inch, the high temperature end of the gradient leading. The process is applied particularly to alloys based on Fe, Ni, Co, Ti, Cr, W or Mo, when the thermal gradient may be 500‹-5000‹F/inch advancing at 0.5-144 inches per hour. The alloy may be strengthened by oxide dispersion, precipitated γ1, or rare earth metal addition. In particular examples an alloy of 80% Ni and 20% Cr dispersion strengthened with 2 volume % of thoria was extruded at 1800-1860‹F and was then heated progressively to 2400-2425‹F by passage of a temperature gradient of 1500-2000‹F/inch at a rate of 0.1 inch, 0.5 inch, 5 inch, 24 inch or 72 inch/hour. Furthermore an alloy containing 15% Cr, 5% Al, 1% Nb, 1% Y, balance Fe and dispersion strengthened with 4 vol.% Al 2 O 3 was rolled at 1800‹F and then heated to 2425‹F by passage of a 1500‹F/ inch temperature gradient at 1 inch/hour. Suitable apparatus for carrying out the invention comprises a planar induction coil 10 and water cooled chill block through which a workpiece 20 is passed. The power supply to the coil is controlled by optical pyrometer 26. The process may be applied to turbine blades.
GB1608472A 1971-07-22 1972-04-07 Alloy microstructure control Expired GB1386808A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16503071A 1971-07-22 1971-07-22

Publications (1)

Publication Number Publication Date
GB1386808A true GB1386808A (en) 1975-03-12

Family

ID=22597115

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1608472A Expired GB1386808A (en) 1971-07-22 1972-04-07 Alloy microstructure control

Country Status (7)

Country Link
US (1) US3772090A (en)
JP (1) JPS5335887B1 (en)
BE (1) BE782473A (en)
DE (1) DE2219275C3 (en)
FR (1) FR2146716A5 (en)
GB (1) GB1386808A (en)
IT (1) IT953571B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2256202A (en) * 1991-04-24 1992-12-02 Inco Alloys Int Controlled grain size for ods iron-base alloys

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975219A (en) * 1975-09-02 1976-08-17 United Technologies Corporation Thermomechanical treatment for nickel base superalloys
CA1135924A (en) * 1978-05-04 1982-11-23 Sanford Baranow Process for enhancing the mechanical properties of oxide dispersion strengthened materials
US4475980A (en) * 1982-06-01 1984-10-09 United Technologies Corporation Solid state production of multiple single crystal articles
US4481043A (en) * 1982-12-07 1984-11-06 The United States Of America As Represented By The United States Department Of Energy Heat treatment of NiCrFe alloy to optimize resistance to intergrannular stress corrosion
EP0115092B1 (en) * 1983-02-01 1987-08-12 BBC Brown Boveri AG Structural element with a high corrosion and oxidation resistance made from a dispersion-hardened superalloy, and process for its manufacture
US4617817A (en) * 1985-02-06 1986-10-21 The United States Of America As Represented By The Secretary Of The Air Force Optimizing hot workability and controlling microstructures in difficult to process high strength and high temperature materials
DE3669044D1 (en) * 1985-12-19 1990-03-22 Bbc Brown Boveri & Cie METHOD FOR ZONING A METAL WORKPIECE.
US4762679A (en) * 1987-07-06 1988-08-09 The United States Of America As Represented By The Secretary Of The Air Force Billet conditioning technique for manufacturing powder metallurgy preforms
EP0331360B1 (en) * 1988-02-26 1994-02-02 Hitachi, Ltd. Method of preparing an oxide high-temperature superconducting material
WO1990014308A1 (en) * 1989-05-15 1990-11-29 Massachusetts Institute Of Technology Textured oxide compositions by directional oxidation
US20070267109A1 (en) * 2006-05-17 2007-11-22 General Electric Company High pressure turbine airfoil recovery device and method of heat treatment
US8357328B2 (en) * 2009-12-14 2013-01-22 General Electric Company Methods for processing nanostructured ferritic alloys, and articles produced thereby
CN113234905B (en) * 2021-05-10 2023-06-13 烟台大学 High-flux preparation method and device for gradient thermal deformation and gradient thermal treatment

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE399896C (en) * 1924-07-31 Frederick Shand Goucher Dr Process for the production of metal wires or threads, in particular from refractory metals
DE1179968B (en) * 1962-02-21 1964-10-22 Magnetfab Bonn Gmbh Process for the production of recrystallization textures in metallic permanent magnets
NL136758C (en) * 1963-10-21 1900-01-01
GB1134492A (en) * 1964-03-11 1968-11-27 Johnson Matthey Co Ltd Methods of improving the mechanical properties of metals and their alloys
US3368883A (en) * 1965-07-29 1968-02-13 Du Pont Dispersion-modified cobalt and/or nickel alloy containing anisodiametric grains
US3388010A (en) * 1965-07-29 1968-06-11 Fansteel Metallurgical Corp Dispersion-hardened metal sheet and process for making same
US3540947A (en) * 1966-10-25 1970-11-17 Sadaichi Komaki Method of manufacturing a permanent magnetic alloy
US3677835A (en) * 1970-10-16 1972-07-18 United Aircraft Corp Homogeneous nickel-base superalloy castings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2256202A (en) * 1991-04-24 1992-12-02 Inco Alloys Int Controlled grain size for ods iron-base alloys
GB2256202B (en) * 1991-04-24 1994-08-24 Inco Alloys Int Controlled grain size for ods iron-base alloys

Also Published As

Publication number Publication date
DE2219275C3 (en) 1982-02-11
FR2146716A5 (en) 1973-03-02
BE782473A (en) 1972-10-23
JPS5335887B1 (en) 1978-09-29
DE2219275A1 (en) 1973-02-01
DE2219275B2 (en) 1981-06-04
IT953571B (en) 1973-08-10
US3772090A (en) 1973-11-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee