EP0273838A2 - Verfahren zur Erhöhung der Rekristallisationstemperatur von Aluminium und Aluminiumlegierungen - Google Patents

Verfahren zur Erhöhung der Rekristallisationstemperatur von Aluminium und Aluminiumlegierungen Download PDF

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Publication number
EP0273838A2
EP0273838A2 EP87420324A EP87420324A EP0273838A2 EP 0273838 A2 EP0273838 A2 EP 0273838A2 EP 87420324 A EP87420324 A EP 87420324A EP 87420324 A EP87420324 A EP 87420324A EP 0273838 A2 EP0273838 A2 EP 0273838A2
Authority
EP
European Patent Office
Prior art keywords
uranium
ppm
alloys
temperature
metal
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
EP87420324A
Other languages
English (en)
French (fr)
Other versions
EP0273838B1 (de
EP0273838A3 (en
Inventor
François-Régis Boutin
Guy-Michel Raynaud
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.)
Constellium Issoire SAS
Original Assignee
Cegedur Societe de Transformation de lAluminium Pechiney SA
Pechiney Rhenalu SAS
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 Cegedur Societe de Transformation de lAluminium Pechiney SA, Pechiney Rhenalu SAS filed Critical Cegedur Societe de Transformation de lAluminium Pechiney SA
Priority to AT87420324T priority Critical patent/ATE62714T1/de
Publication of EP0273838A2 publication Critical patent/EP0273838A2/de
Publication of EP0273838A3 publication Critical patent/EP0273838A3/fr
Application granted granted Critical
Publication of EP0273838B1 publication Critical patent/EP0273838B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium

Definitions

  • the invention relates to a method for increasing the recrystallization temperature of aluminum and its alloys and minimizing the size of the grains.
  • this metal is annealed, it evolves towards a more stable equilibrium state which is a function of the temperature and the duration of the annealing.
  • the retarding effect increases as the uranium concentration increases, but reaches a maximum around 200 ppm.
  • the optimum concentration is around 50 ppm in the first case and around 150 ppm in the second case.
  • FIGS. 1 to 21 represent photos of granular structures of several aluminum alloys having been doped with different quantities of uranium and subjected to specific annealing conditions.
  • the addition of uranium at contents between 50 and 200 ppm has a retarding effect in an alloy of the type 1085 and therefore increases the recrystallization temperature.
  • the optimum concentration depends on the transformation range of the metal: - around 50 ppm if the metal is homogenized - approximately 150 ppm if it is reheated.
  • uranium greatly reduces the magnification of the grain, especially in the case of alloys homogenized at high temperature.
  • This invention is applied in particular to obtaining aluminum-based sheets intended to be subjected to heating at a relatively high temperature, such as, for example, that which accompanies enamelling or brazing operations, without this treatment could alter the mechanical properties of said sheets.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Powder Metallurgy (AREA)
  • Coating With Molten Metal (AREA)
  • Processing Of Solid Wastes (AREA)
  • Bipolar Transistors (AREA)
  • Forging (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Heat Treatment Of Nonferrous Metals Or Alloys (AREA)
  • Enzymes And Modification Thereof (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
  • Thermistors And Varistors (AREA)
  • Cookers (AREA)
  • Thermally Actuated Switches (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
EP87420324A 1986-12-02 1987-12-01 Verfahren zur Erhöhung der Rekristallisationstemperatur von Aluminium und Aluminiumlegierungen Expired - Lifetime EP0273838B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87420324T ATE62714T1 (de) 1986-12-02 1987-12-01 Verfahren zur erhoehung der rekristallisationstemperatur von aluminium und aluminiumlegierungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8617015 1986-12-02
FR8617015A FR2607522B1 (fr) 1986-12-02 1986-12-02 Procede permettant d'augmenter la temperature de recristallisation de l'aluminium et de ses alliages

Publications (3)

Publication Number Publication Date
EP0273838A2 true EP0273838A2 (de) 1988-07-06
EP0273838A3 EP0273838A3 (en) 1988-07-20
EP0273838B1 EP0273838B1 (de) 1991-04-17

Family

ID=9341581

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87420324A Expired - Lifetime EP0273838B1 (de) 1986-12-02 1987-12-01 Verfahren zur Erhöhung der Rekristallisationstemperatur von Aluminium und Aluminiumlegierungen

Country Status (15)

Country Link
US (1) US4816088A (de)
EP (1) EP0273838B1 (de)
JP (1) JPS63143244A (de)
AT (1) ATE62714T1 (de)
CA (1) CA1311631C (de)
DE (1) DE3769454D1 (de)
DK (1) DK631187A (de)
ES (1) ES2021745B3 (de)
FI (1) FI88311C (de)
FR (1) FR2607522B1 (de)
GR (1) GR3001797T3 (de)
IE (1) IE60679B1 (de)
IS (1) IS1402B6 (de)
NO (1) NO168186C (de)
PT (1) PT86268B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2637914A1 (fr) * 1988-10-17 1990-04-20 Pechiney Rhenalu Procede permettant de diminuer le taux de recristallisation de l'aluminium et de ses alliages

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB870261A (en) * 1956-11-23 1961-06-14 Pechiney Prod Chimiques Sa Improvements in or relating to aluminium lithium alloys
US3147111A (en) * 1961-11-27 1964-09-01 Dow Chemical Co Article of aluminum-base alloy
GB1292508A (en) * 1969-10-24 1972-10-11 Sumitomo Electric Industries Improved heat resistant alloys for electrical conductors
DE3406406A1 (de) * 1983-02-22 1984-10-04 Fuji Photo Film Co., Ltd., Minami-Ashigara, Kanagawa Traeger fuer flachdruckformen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1415733A (en) * 1920-02-02 1922-05-09 Light Metals Company Process of making and using metal scavenging alloy
NL265774A (de) * 1958-12-29

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB870261A (en) * 1956-11-23 1961-06-14 Pechiney Prod Chimiques Sa Improvements in or relating to aluminium lithium alloys
US3147111A (en) * 1961-11-27 1964-09-01 Dow Chemical Co Article of aluminum-base alloy
GB1292508A (en) * 1969-10-24 1972-10-11 Sumitomo Electric Industries Improved heat resistant alloys for electrical conductors
DE3406406A1 (de) * 1983-02-22 1984-10-04 Fuji Photo Film Co., Ltd., Minami-Ashigara, Kanagawa Traeger fuer flachdruckformen

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Aluminium Alloys : Structure and Properties; L.F. Mondolfo, P. 389-391, Butterworths; London 1976 *
METALLURGICAL TRANSACTIONS A, vol. 13A, mars 1982, pages 401-410, American Society for Metals and the Metallurgical Society of Aime, New York, US; F.S. LIN et al.: "Microstructure-property relationships of two A1-3Li-2Cu-0.2Zr-XCd alloys" *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2637914A1 (fr) * 1988-10-17 1990-04-20 Pechiney Rhenalu Procede permettant de diminuer le taux de recristallisation de l'aluminium et de ses alliages

Also Published As

Publication number Publication date
JPH0261532B2 (de) 1990-12-20
FI88311C (fi) 1993-04-26
PT86268B (pt) 1990-11-07
US4816088A (en) 1989-03-28
JPS63143244A (ja) 1988-06-15
ATE62714T1 (de) 1991-05-15
NO168186B (no) 1991-10-14
FI875303A0 (fi) 1987-12-01
FR2607522A1 (fr) 1988-06-03
NO168186C (no) 1992-01-22
PT86268A (fr) 1988-01-01
DE3769454D1 (de) 1991-05-23
EP0273838B1 (de) 1991-04-17
NO875004D0 (no) 1987-12-01
FI88311B (fi) 1993-01-15
GR3001797T3 (en) 1992-11-23
FR2607522B1 (fr) 1992-04-30
IS3291A7 (is) 1988-06-03
IE60679B1 (en) 1994-08-10
DK631187A (da) 1988-06-03
IE873260L (en) 1988-06-02
ES2021745B3 (es) 1991-11-16
FI875303A (fi) 1988-06-03
CA1311631C (fr) 1992-12-22
DK631187D0 (da) 1987-12-01
NO875004L (no) 1988-06-03
IS1402B6 (is) 1989-12-15
EP0273838A3 (en) 1988-07-20

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