EP0517087B1 - Procédé pour la fabrication d'alliages de cuivre - Google Patents

Procédé pour la fabrication d'alliages de cuivre Download PDF

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Publication number
EP0517087B1
EP0517087B1 EP92108922A EP92108922A EP0517087B1 EP 0517087 B1 EP0517087 B1 EP 0517087B1 EP 92108922 A EP92108922 A EP 92108922A EP 92108922 A EP92108922 A EP 92108922A EP 0517087 B1 EP0517087 B1 EP 0517087B1
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EP
European Patent Office
Prior art keywords
cooling
hours
alloy
content
cold
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 - Lifetime
Application number
EP92108922A
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German (de)
English (en)
Other versions
EP0517087A1 (fr
Inventor
Wolfgang Dr.-Ing. Hornig
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.)
Diehl Verwaltungs Stiftung
Original Assignee
Diehl GmbH and 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 Diehl GmbH and Co filed Critical Diehl GmbH and Co
Publication of EP0517087A1 publication Critical patent/EP0517087A1/fr
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • C22C9/02—Alloys based on copper with tin as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
    • 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
    • C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon

Definitions

  • the invention relates to a process for the production of hardenable, in particular spinodal, copper alloys of very high strength and very good formability, with a content of 2-10% Ni and 2-12% Sn, preferably 0.05-0.6% Mn, the rest Cu and common impurities.
  • the invention relates generally to the field of precipitation hardening alloys, in particular so-called spinodal alloys.
  • the field of spinodal alloys is still little explored, and it is known that there are not many spinodal alloy systems, but that there is still little clarity about the properties that can be used to predict whether or not a spinodal alloy will be formed.
  • Spinodal alloys are characterized by a significantly increased strength compared to normal precipitation hardening alloys due to an order of magnitude better, namely finer structure. This occurs because there are no precipitation particles in the metal matrix, but only diffusion zones in the range of nanometers. With the copper-nickel-tin alloy system, strength increases of two to three times the normal alloy are possible.
  • the object of the invention was therefore to provide, starting from an alloy composition, as stated above, a method by means of which hardenable, in particular spinodal, alloys can be produced with significantly higher strength and better formability.
  • the alloy produced according to the process explained above is not only characterized by an unusual strength, but also by excellent forming properties, i.e. very good deep drawability. Due to these properties, the new alloy is not only useful in the electronics industry, particularly in modules or in construction technology, there are also applications in automotive technology where, in addition to high strength, good corrosion resistance is required, there is also Possibility of use in aircraft technology for high-strength castings or in transmission technology. Due to the good material properties, an application is also conceivable where friction and wear are important.
  • nickel and tin levels are quite large, the higher levels for nickel and tin have proven to be particularly advantageous.
  • a ratio of the constituents nickel to tin between 0.3: 1 and 1: 1 has proven to be particularly favorable in the sense of the invention.
  • the cooling process between solution annealing and aging is not critical with regard to the cooling rate.
  • the cooling can take place both by quenching and at an average cooling rate, for example when blowing with air.
  • the alloy can be cast not only in blocks, but also in strip, in the latter case a cold rolling process must follow before solution annealing. This method is defined in claim 6.
  • the low manganese content mentioned is not mandatory in the sense of the invention, but is advantageous in order to achieve a pore-free casting.
  • the amount of manganese added must remain so small that the manganese does not become an alloy component. Due to the high affinity of the manganese for oxygen, the air present in the melt is bound so that the casting is free of pores.
  • this usually means applying cold deformation, increase the strength of the alloy even more, but the ductility tends to decrease, as does the conductivity, at which average values of up to about 35% IACS can be achieved due to the method according to the invention are.
  • the alloy is first cast in blocks. This is followed by solution annealing at a temperature of 750 ° C for four hours. After quenching the blocks in cold water, they are stored at a temperature of 320 ° C for 19.5 hours and finally cooled in an air stream.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Conductive Materials (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Claims (8)

  1. Procédé de fabrication d'alliages de cuivre durcissables, en particulier à structure spinodale, de très haute résistance et de très bonne déformabilité, avec une teneur de 2 à 10 % de Ni et de 2 à 12 % de Sn, de préférence de 0,05 à 0,6 % de Mn, de restes de Cu et d'impuretés usuelles, avec les étapes de procédé suivantes :
    a) coulage de l'alliage en lingots
    b) recuit de mise en solution en une étape de 650 °C à 750 °C pendant 24 à 3 heures
    c) refroidissement et - sans étape de déformation à froid -d) vieillissement de 260 °C à 380 °C, excepté 350 °C et plus, pendant 14 jours à 15 minutes
    e) refroidissement à l'air.
  2. Procédé selon la revendication 1, caractérisé par une application des étapes de procédé sur des alliages d'une teneur de 2 à 9 % de Ni et de 6 à 10 % de Sn ainsi que de 0,05 à 0,06 % de Mn, restes de Cu et impuretés usuelles.
  3. Procédé selon la revendication 1, caractérisé en ce que le rapport des constituants nickel et zinc se situe entre 0,3 à 1 et 1 à 1.
  4. Procédé selon la revendication 1, caractérisé en ce que l'étape de procédé b) s'effectue à une température de 750 °C pendant quatre heures.
  5. - Procédé selon la revendication 1, caractérisé en ce que le refroidissement de l'étape de procédé c) s'effectue par trempe.
  6. Procédé de fabrication d'alliages de cuivre durcissables, en particulier à structure spinodale, de très haute résistance et de très bonne déformabilité, avec une teneur de 2 à 10 % de Ni et de 2 à 12 % de Sn, de préférence de 0,05 à 0,6 % de Mn, de restes de Cu et d'impuretés usuelles, avec les étapes de procédé suivantes :
    a) coulage de l'alliage en ruban
    a1) laminage à froid
    b) recuit de mise en solution de 650 °C à 750 °C pendant 24 à 0,5 heure
    c) refroidissement et - sans étape de déformation à froid -d) vieillissement de 260 °C à 380 °C, excepté 350 °C et plus, pendant 14 jours à 15 minutes
    e) refroidissement à l'air.
  7. Procédé selon une ou plusieurs des revendications précédentes pour un alliage d'une teneur de 9 % de Ni, de 11 % de Sn, de 0,14 % de Mn, de restes de Cu et d'impuretés usuelles, caractérisé par les étapes de procédé suivantes :
    a) coulage en lingots
    b) recuit de mise en solution à 750 °C pendant 4 heures
    c) refroidissement
    d) vieillissement à 320 °C pendant 19,5 heures
    e) refroidissement à l'air.
  8. Procédé selon les revendications 6 et 7 avec cette particularité qu'à l'étape de procédé d) le recuit de mise en solution s'effectue à 750 °C pendant une heure.
EP92108922A 1991-06-01 1992-05-27 Procédé pour la fabrication d'alliages de cuivre Expired - Lifetime EP0517087B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4118037 1991-06-01
DE4118037 1991-06-01
DE4215576A DE4215576A1 (de) 1991-06-01 1992-05-12 Verfahren zur herstellung von kupferlegierungen
DE4215576 1992-05-12

Publications (2)

Publication Number Publication Date
EP0517087A1 EP0517087A1 (fr) 1992-12-09
EP0517087B1 true EP0517087B1 (fr) 1996-02-28

Family

ID=25904167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92108922A Expired - Lifetime EP0517087B1 (fr) 1991-06-01 1992-05-27 Procédé pour la fabrication d'alliages de cuivre

Country Status (3)

Country Link
EP (1) EP0517087B1 (fr)
AT (1) ATE134715T1 (fr)
DE (2) DE4215576A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3536819B1 (fr) * 2013-03-14 2024-04-17 Materion Corporation Procédé pour l'amélioration de l'aptitude au formage d'alliages corroyés de cuivre/nickel/étain

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6716292B2 (en) * 1995-06-07 2004-04-06 Castech, Inc. Unwrought continuous cast copper-nickel-tin spinodal alloy
ES2116250T1 (es) * 1995-06-07 1998-07-16 Castech Inc Aleacion espinodal de cobre-niquel-estaño fundida de forma continua y sin forjado.
CN113201661B (zh) * 2021-04-25 2022-04-08 江苏青益金属科技股份有限公司 一种用于轿车座椅加热的合金丝材及其制备方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1928747A (en) * 1928-10-11 1933-10-03 Int Nickel Co Nonferrous alloy
US4012240A (en) * 1975-10-08 1977-03-15 Bell Telephone Laboratories, Incorporated Cu-Ni-Sn alloy processing
US4142918A (en) * 1978-01-23 1979-03-06 Bell Telephone Laboratories, Incorporated Method for making fine-grained Cu-Ni-Sn alloys
US4260432A (en) * 1979-01-10 1981-04-07 Bell Telephone Laboratories, Incorporated Method for producing copper based spinodal alloys
US4406712A (en) * 1980-03-24 1983-09-27 Bell Telephone Laboratories, Incorporated Cu-Ni-Sn Alloy processing
JPH02225651A (ja) * 1988-11-15 1990-09-07 Mitsubishi Electric Corp 高強度Ｃｕ―Ｎｉ―Ｓｎ合金の製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3536819B1 (fr) * 2013-03-14 2024-04-17 Materion Corporation Procédé pour l'amélioration de l'aptitude au formage d'alliages corroyés de cuivre/nickel/étain

Also Published As

Publication number Publication date
EP0517087A1 (fr) 1992-12-09
DE59205433D1 (de) 1996-04-04
DE4215576A1 (de) 1992-12-03
ATE134715T1 (de) 1996-03-15

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