EP0504077A1 - Zum Tiefziehen geignete hochfeste verformbare isotropische Legierungen auf Aluminiumbasis - Google Patents

Zum Tiefziehen geignete hochfeste verformbare isotropische Legierungen auf Aluminiumbasis Download PDF

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Publication number
EP0504077A1
EP0504077A1 EP92420073A EP92420073A EP0504077A1 EP 0504077 A1 EP0504077 A1 EP 0504077A1 EP 92420073 A EP92420073 A EP 92420073A EP 92420073 A EP92420073 A EP 92420073A EP 0504077 A1 EP0504077 A1 EP 0504077A1
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EP
European Patent Office
Prior art keywords
alloy
alloy according
alloys
content
total
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Granted
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EP92420073A
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English (en)
French (fr)
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EP0504077B1 (de
Inventor
Guy-Michel Raynaud
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Constellium Issoire SAS
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Pechiney Rhenalu SAS
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Priority to EP95105950A priority Critical patent/EP0666330A3/de
Publication of EP0504077A1 publication Critical patent/EP0504077A1/de
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    • 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
    • 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
    • C22C21/06—Alloys based on aluminium with magnesium 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
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent

Definitions

  • the invention relates to alloys based on A1 intended for stamping and / or drawing and having high mechanical characteristics of resistance as well as good isotropy (low rate of horns) and good cold formability.
  • alloys usually used for the manufacture of drawn can bodies are alloys 3004 or 3104, according to the designations of the Aluminum Association.
  • the alloys based on A1 according to the invention which exhibit both high mechanical characteristics, good isotropy and good formability belong to two distinct families, one (I) derived from conventional 3004 alloys, the other (II) essentially containing additions of Fe and Mg.
  • alloys according to the invention have the following weight compositions (%):
  • compositions (I) a Cu content greater than or equal to 0.20% or even 0.25% is preferable. Likewise, it is preferable to have an Fe content ⁇ 0.20, or better still less than 0.15%.
  • the contents of Mn, Fe and Mg must be limited, to avoid the rough precipitation of primary compounds, precipitates which are harmful and cause defects during the subsequent rolling and / or stamping-stretching; in this case, the relationship to be observed is as follows: % Mn + 0.9% Fe + 0.3% Mg ⁇ 1.9
  • compositions (I), for Fe ⁇ 0.25 and / or Si ⁇ 0.25 there appears in the micrographic structure of "white bands" after homogenization or reheating and hot rolling, zones in which the Mn content is low, thus promoting the anisotropy of the material.
  • the contents of Mn and Mg are limited below to obtain sufficient mechanical strength; however, beyond 1.6% Mn, there is appearance of primary intermetallic particles harmful with regard to formability during rolling or stamping and / or drawing operations, and for Mg ⁇ 2 , 5%, there is an appearance of stretching defects, for example sticking to the die (also called a ring) and too great anisotropy.
  • Cu is kept below 0.6% to meet food standards (decree of August 27, 1987), but is preferably held above 0.20% or even 0.25% to obtain the high characteristics mechanical properties required when firing the coverings. Above 0.35% Cr, appearance of coarse primary intermetallic compounds detrimental to formability by damaging effect. The upper limits in Ti and V are justified for the same reason.
  • a preferred composition contains from 1.2 to 1.6% Mn, from 0.8 to 1.2% Mg, from 0.2 to 0.6% Cu, and up to 0.25% Cr.
  • compositions (II) it is preferable that the content of Mn is kept below 0.40%, and preferably 0.35%. Likewise, it is preferable that the Fe is held above 1.05% or better 1.10%.
  • a preferred composition contains 1.1 to 1.4% Fe, 1.6 to 2.5% Mg and up to 0.25% Cr.
  • alloys according to the invention are entirely analogous to that of the alloys 3004 and 3104, as will appear in detail in the examples, except as regards the need for intermediate annealing for the alloys (I).
  • the classic 3004 alloy is characterized by the existence of a structure comprising, in addition to the coarse primary intermetallic precipitates situated in the interdendritic zones and the intragranular secondary precipitates, fine "white bands", free of precipitates, in the interdendritic zones.
  • the alloys according to the invention have similar microstructures, but in the total absence of "white bands”.
  • the alloys according to the invention are therefore characterized by a very homogeneous distribution of the primary and secondary precipitates in a matrix based on A1 from the ingot stage.
  • FIGS. 1, 2 and 3 are micrographs at magnification X400 respectively of the conventional alloy 3004 (example 0) and of the alloys of examples 1 (or 3) and 2, according to the invention, in the raw state of rolling to hot.
  • Figure 4 is a schematic profile of the distribution of precipitates (volume fraction in%) as a function of the distance (in ⁇ m) counted from an interdendritic zone on a cross section of a dendrite having about 95 ⁇ m wide for a conventional 3004 alloy (thick line) and an alloy according to the invention (thin line).
  • the invention will be better understood using the following examples, compared with an alloy 3004 taken as a reference.
  • the material obtained is characterized by its mechanical tensile characteristics (transverse direction), by the horn index S 45/90 as defined below, and the values of LDR and LIR also defined below.
  • the LDR (limiting drawing ratio) is the value of the ratio: 0 ⁇ maxi blank / 0 ⁇ punch without appearance of rupture under determined stamping conditions: lubrication, pressure of blank holder, geometry of the punch (rounded), sheet thickness (blank), etc.
  • Examples 1 to 5 illustrate the invention with respect to the alloy 3004 taken as a reference (example 0).
  • Examples 1 to 3 relate to the compositions (I) and Examples 4 and 5 to the compositions (II).
  • the alloys were cast in trays of 1100 x 300 x 2650 mm3, homogenized or reheated, scalped, hot rolled up to 3mm thick and cold up to 0.3mm thick, with or without intermediate annealing under the conditions detailed in Table 2 (state H 1x).
  • a simulation of the firing of the varnishes was carried out by maintaining for 10 minutes at 204 ° C. (state H 28).
  • the invention finds a main application in the manufacture of stretched cans, particularly of drink cans, lighter and / or more resistant with an increased saving of material, with a manufacturing range entirely similar to that of conventional alloys (3004 -3104), with a simplification of the manufacturing range by avoiding intermediate annealing.
EP92420073A 1991-03-14 1992-03-12 Zum Tiefziehen geignete hochfeste verformbare isotropische Legierungen auf Aluminiumbasis Expired - Lifetime EP0504077B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP95105950A EP0666330A3 (de) 1991-03-14 1992-03-12 Zum Tiefziehen geeignete Hochfeste verformbare isotropische Legierungen auf Aluminiumbasis.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9103662 1991-03-14
FR9103662 1991-03-14
CA002077315A CA2077315C (fr) 1991-03-14 1992-09-01 Alliages d'al pour emboutissage-etirage resistants formables et isotropes

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP95105950.0 Division-Into 1992-03-12

Publications (2)

Publication Number Publication Date
EP0504077A1 true EP0504077A1 (de) 1992-09-16
EP0504077B1 EP0504077B1 (de) 1996-10-09

Family

ID=25675487

Family Applications (2)

Application Number Title Priority Date Filing Date
EP95105950A Withdrawn EP0666330A3 (de) 1991-03-14 1992-03-12 Zum Tiefziehen geeignete Hochfeste verformbare isotropische Legierungen auf Aluminiumbasis.
EP92420073A Expired - Lifetime EP0504077B1 (de) 1991-03-14 1992-03-12 Zum Tiefziehen geignete hochfeste verformbare isotropische Legierungen auf Aluminiumbasis

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP95105950A Withdrawn EP0666330A3 (de) 1991-03-14 1992-03-12 Zum Tiefziehen geeignete Hochfeste verformbare isotropische Legierungen auf Aluminiumbasis.

Country Status (5)

Country Link
EP (2) EP0666330A3 (de)
CA (1) CA2077315C (de)
DE (1) DE504077T1 (de)
ES (1) ES2051258T3 (de)
GR (1) GR940300046T1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0547175A1 (de) * 1990-09-05 1993-06-23 Golden Aluminum Company Aluminiumlegierungsbleche
FR2703072A1 (fr) * 1993-03-26 1994-09-30 Pechiney Rhenalu Tôles ou bandes en alliages d'Al (série 5000) à faible anisotropie mécanique et leur procédé d'obtention.
FR2707669A1 (fr) * 1993-07-16 1995-01-20 Pechiney Rhenalu Procédé de fabrication d'une feuille mince apte à la confection d'éléments constitutifs de boîtes.
WO1998001593A1 (en) * 1996-07-08 1998-01-15 Alcan International Limited Process for producing aluminum alloy can body stock
EP4050115A1 (de) 2021-02-26 2022-08-31 Constellium Rolled Products Singen GmbH & Co.KG Langlebiges aluminium-legierungsbleche für dekorative anwendungen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2027743A (en) * 1978-08-04 1980-02-27 Alusuisse Continuous strip casting of aluminium alloy for container components
US4318755A (en) * 1980-12-01 1982-03-09 Alcan Research And Development Limited Aluminum alloy can stock and method of making same
EP0097319A2 (de) * 1982-06-21 1984-01-04 Sumitomo Light Metal Industries, Ltd. Kaltgewalztes, ziehfähiges Blech aus Aluminiumlegierung und Verfahren zu ihrer Herstellung
EP0121620A1 (de) * 1983-04-11 1984-10-17 Kabushiki Kaisha Kobe Seiko Sho Einbrennhärtbare Aluminiumlegierung für Feinbleche und Verfahren zu ihrer Herstellung
EP0298876A1 (de) * 1987-06-24 1989-01-11 Pechiney Rhenalu Bleche aus einer Magnesium enthaltenden Aluminiumlegierung, geeignet für die Herstellung von Getränkedosen durch Tiefziehen, und Verfahren zur Herstellung dieser Bleche
WO1990010091A1 (en) * 1989-02-24 1990-09-07 Golden Aluminum Company Process for preparing low earing aluminum alloy strip

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6164847A (ja) * 1984-09-06 1986-04-03 Kobe Steel Ltd 高強度で引きちぎれ性に優れるアルミニウム合金板

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2027743A (en) * 1978-08-04 1980-02-27 Alusuisse Continuous strip casting of aluminium alloy for container components
US4318755A (en) * 1980-12-01 1982-03-09 Alcan Research And Development Limited Aluminum alloy can stock and method of making same
EP0097319A2 (de) * 1982-06-21 1984-01-04 Sumitomo Light Metal Industries, Ltd. Kaltgewalztes, ziehfähiges Blech aus Aluminiumlegierung und Verfahren zu ihrer Herstellung
EP0121620A1 (de) * 1983-04-11 1984-10-17 Kabushiki Kaisha Kobe Seiko Sho Einbrennhärtbare Aluminiumlegierung für Feinbleche und Verfahren zu ihrer Herstellung
EP0298876A1 (de) * 1987-06-24 1989-01-11 Pechiney Rhenalu Bleche aus einer Magnesium enthaltenden Aluminiumlegierung, geeignet für die Herstellung von Getränkedosen durch Tiefziehen, und Verfahren zur Herstellung dieser Bleche
WO1990010091A1 (en) * 1989-02-24 1990-09-07 Golden Aluminum Company Process for preparing low earing aluminum alloy strip

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 100, no. 12, 12 Mars 1984, Columbus, Ohio, US; abstract no. 90038D, 'HARD ALUMINIUM ALLOY SHEET OF LOW EARING RATIO FOR CAN BODIES' page 268 ;colonne 1 ; *
CHEMICAL ABSTRACTS, vol. 101, no. 16, 15 Octobre 1984, Columbus, Ohio, US; abstract no. 135619H, 'ALUMINIUM ALLOY SHEET FOR FORMING' page 301 ;colonne 2 ; *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0547175A1 (de) * 1990-09-05 1993-06-23 Golden Aluminum Company Aluminiumlegierungsbleche
EP0547175A4 (en) * 1990-09-05 1993-09-08 Golden Aluminum Company Aluminum alloy sheet stock
FR2703072A1 (fr) * 1993-03-26 1994-09-30 Pechiney Rhenalu Tôles ou bandes en alliages d'Al (série 5000) à faible anisotropie mécanique et leur procédé d'obtention.
FR2707669A1 (fr) * 1993-07-16 1995-01-20 Pechiney Rhenalu Procédé de fabrication d'une feuille mince apte à la confection d'éléments constitutifs de boîtes.
WO1995002708A1 (fr) * 1993-07-16 1995-01-26 Pechiney Rhenalu Procede de fabrication d'une feuille mince apte a la confection d'elements constitutifs de boites
CN1043580C (zh) * 1993-07-16 1999-06-09 皮奇尼·安那吕 生产适用于制作罐头盒配件的薄板的方法
WO1998001593A1 (en) * 1996-07-08 1998-01-15 Alcan International Limited Process for producing aluminum alloy can body stock
GB2330590A (en) * 1996-07-08 1999-04-28 Alcan Int Ltd Process for producing aluminum alloy can body stock
GB2330590B (en) * 1996-07-08 2000-09-27 Alcan Int Ltd Process for producing aluminum alloy can body stock
EP4050115A1 (de) 2021-02-26 2022-08-31 Constellium Rolled Products Singen GmbH & Co.KG Langlebiges aluminium-legierungsbleche für dekorative anwendungen
WO2022179856A1 (en) 2021-02-26 2022-09-01 Constellium Rolled Products Singen Gmbh & Co.Kg Durable aluminium alloy sheet for decorative applications

Also Published As

Publication number Publication date
EP0666330A2 (de) 1995-08-09
CA2077315C (fr) 2000-08-08
EP0504077B1 (de) 1996-10-09
DE504077T1 (de) 1994-11-03
ES2051258T1 (es) 1994-06-16
EP0666330A3 (de) 1996-07-17
CA2077315A1 (fr) 1994-03-02
ES2051258T3 (es) 1996-12-01
GR940300046T1 (en) 1994-07-29

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