EP0823489B2 - Produkt aus AlMgMn-Legierung für Schweissstrukturen mit verbesserter Korossionsbeständigkeit - Google Patents

Produkt aus AlMgMn-Legierung für Schweissstrukturen mit verbesserter Korossionsbeständigkeit Download PDF

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Publication number
EP0823489B2
EP0823489B2 EP97420125A EP97420125A EP0823489B2 EP 0823489 B2 EP0823489 B2 EP 0823489B2 EP 97420125 A EP97420125 A EP 97420125A EP 97420125 A EP97420125 A EP 97420125A EP 0823489 B2 EP0823489 B2 EP 0823489B2
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French (fr)
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EP0823489A1 (de
EP0823489B1 (de
Inventor
Jean-Luc Hoffmann
Martin Peter Schmidt
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Constellium Issoire SAS
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Alcan Rhenalu SAS
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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
    • C22F1/04—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
    • 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
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
    • C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon

Definitions

  • the thermally affected zone around the weld joint is in the annealed state (state O), with less mechanical characteristics, which does not allow to exploit fully, in welded constructions, the mechanical characteristics. of the material.
  • the certification and control bodies generally recommend that only the mechanical characteristics in state O be taken into account when sizing a structure.
  • German patent DE 2443443 (Siemens AG) claims a weldable aluminum alloy machine component containing, inter alia, 3.5 to 4.9% Mg and 0.5 to 1.5% Mn. No information is given the mechanical characteristics or the corrosion resistance of this product.
  • the European patent EP 0015799 (aines et Chantiers de Bretagne) discloses a weldable alloy containing among others 3.5 to 4.5% magnesium and 0.2 to 0.7% manganese for the manufacture of tubes for cryogenic application. This application does not pose the problem of thermal sensitization to corrosion, and the document does not mention the mechanical characteristics or other properties of use of the product.
  • the US patent US 3502448 (Aluminum Company of America) discloses an alloy containing, inter alia, 4 to 5.5% magnesium, 0.2 to 0.7% manganese, which conducts, by cold rolling, to thin sheets and thin strips to the manufacture of beverage can lids, provided that the relationship between the contents of Mg and Mn is consistent with a certain algebraic relationship.
  • This patent does not concern the field of welded mechanical engineering either.
  • the problem to which the present invention attempts to respond is therefore to provide rolled, drawn or drawn AlMgMn alloy products having, after welding, improved corrosion resistance and better resistance to the sensitizing effect of exposure to temperature. , while retaining good mechanical properties after welding, good resistance to fatigue and can be developed at the lowest cost.
  • the subject of the invention is thus an AlMgMn alloy product for welded mechanical construction of composition (% by weight): 5.0 ⁇ Mg ⁇ 6.5 0.2 ⁇ Mn ⁇ 1.0 Fe ⁇ 0.8 0.05 ⁇ Si ⁇ 0.6 0.2 ⁇ Zn ⁇ 1.3 optionally Cr at a content ⁇ 0.15 and / or one or more of the elements Cu, Ti, Ag, Zr, V, at a content ⁇ 0.3 each, the unavoidable impurities ⁇ 0.05 each and ⁇ 0.15 at total, remains aluminum, wherein the number of Mg 2 Si particles of size between 0.5 and 5 ⁇ m is between 150 and 2000 per mm 2 , and preferably between 300 and 1500 per mm 2 .
  • the eutectic phases Mg 2 Si the eutectic phases AlFeMnSi, the eutectic phases Al 6 (Mn, Fe) and AlFeCr, and the manganese dispersoids, of sub-micron size, which are found in the grain.
  • the number of "large" particles should represent only a small part of the total particles (size> 0.5 ⁇ m), typically less than 25%, and preferably , less than 20%.
  • the surface fraction of Mg 2 Si particles also measured by image analysis from optical microscopy, must be less than 1%, and preferably 0.8%.
  • Manganese improves the tensile strength and decreases the tendency of the metal to recrystallize, which is known to those skilled in the art. Below 0.2%, the present invention is of no industrial interest because the resistance to the pull is too weak. Above 1%, elongation at break, tenacity and fatigue resistance become too low for the intended applications.
  • the iron content does not have much influence in the context of the present invention; it should be less than 0.8% to avoid the formation of primary phases during casting, while for high manganese contents, it is preferable that it does not exceed 0.4%.
  • Examples 1 and 2 and Example 3 (resulting in a microstructure outside the invention) correspond to composition 1.
  • Examples 7 and 8, and Example 9 (resulting in a microstructure outside the invention) correspond to composition 3.
  • the number, the surface fraction and the size distribution of eutectic precipitates Mg 2 Si and AlFeMnSi were measured by image analysis.
  • samples were prepared by an automatic continuous butt MIG welding shipyard company, with a 45 ° symmetrical chamfer with respect to the vertical to a thickness of 6 mm, with wire alloying 5183. The welding was carried out parallel to the rolling direction.

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  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Arc Welding In General (AREA)
  • Metal Rolling (AREA)
  • Laminated Bodies (AREA)
  • Heat Treatment Of Steel (AREA)
  • Prevention Of Electric Corrosion (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Claims (17)

  1. Produkt für mechanische Schweißkonstruktionen aus AlMgMn-Legierung mit der Zusammensetzung (Gew.-%):
    5,0 < Mg < 6,5 0,2 < Mn < 1,0 Fe < 0,8 0,05 < Si < 0,6 0,2 ≤ Zn < 1,3, ggf. Cr < 0,15 und/oder eins oder mehrere der Elemente Cu, Ti, Ag, Zr, V mit einem jeweiligen Gehalt < 0,30, unvermeidbare Verunreinigungen jeweils < 0,05 und insgesamt < 0,15, Rest Aluminium,
    dadurch gekennzeichnet, dass die Zahl der Mg2Si-Partikel, deren Größe zwischen 0,5 µm und 5 µm liegt, 150 bis 2000 pro mm2 und vorzugsweise 300 bis 1500 pro mm2 beträgt.
  2. Produkt nach Anspruch 1, wobei Zn ≤ 0,5.
  3. Produkt nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Zahl der Mg2Si-Teilchen größer 5 µm weniger als 25 % und vorzugsweise weniger als 20 % der Zahl aller Mg2Si-Teilchen größer 0,5 µm beträgt.
  4. Produkt nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Oberflächenanteil der Mg2Si-Teilchen < 1 % und vorzugsweise < 0,8 % ist.
  5. Produkt nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Zahl der AlFeMnSi-, Al6(Mn,Fe)- und AlFeCr-Teilchen größer 0,5 µm weniger als 5000 pro mm2 und vorzugsweise weniger als 2500 pro mm2 beträgt.
  6. Produkt nach Anspruch 5, dadurch gekennzeichnet, dass der Oberflächenanteil der AlFeMnSi-, Al6(Mn,Fe)- und AlFeCr-Phasen größer 0,5 µm weniger als 3 % und vorzugsweise weniger als 2,5 % beträgt.
  7. Produkt nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass die Zahl pro mm2 der AlFeMnSi-, Al6(Mn,Fe)- und AlFeCr-Phasen größer 5 µm weniger als 25 % und vorzugsweise weniger als 20 % aller Phasen größer 0,5 µm darstellt.
  8. Produkt nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Oberflächenanteil der Dispersoide aus Mangan kleiner 0,2 µm mehr als 0,5 % und vorzugsweise mehr als 1,0 % beträgt.
  9. Produkt nach irgendeinem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Tiefe der interkristallinen Korrosion nach Eintauchen während 24 h bei 23°C in ein Bad aus 30 g/l NaCl, 5 g/l HCl und destilliertem Wasser von 10 Tage bei 120°C ausgelagerten Blechen weniger als 400 µm und vorzugsweise weniger als 200 µm beträgt.
  10. Produkt nach irgendeinem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass es eine Dehngrenze nach dem Schweißen, ausgedrückt in MPa, von mehr als (40+20x%Mg) aufweist.
  11. Blech nach irgendeinem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Verformung beim Zuschneiden, gemessen im Zustand H22 nach Richten und Recken, weniger als 3 mm beträgt.
  12. Blech nach irgendeinem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass die Verformung beim Zuschneiden, gemessen im Zustand H22 nach Richten, weniger als 5 mm beträgt.
  13. Warmwalztes Band aus AlMgMn-Legierung mit der Zusammensetzung:
    5,0 < Mg < 6,5 0,2 < Mn < 1,0 Fe < 0,4 0,05 < Si < 0,6 0,2 ≤ Zn < 1,3, ggf. Cr < 0,15 und/oder eins oder mehrere der Elemente Cu, Ti, Ag, Zr, V mit einem jeweiligen Gehalt < 0,30, unvermeidbare Verunreinigungen jeweils < 0,05 und insgesamt < 0,15, Rest Aluminium,
    mit einer Breite von mindestens 2500 mm, vorzugsweise mindestens 3300 mm,
    dadurch gekennzeichnet, dass die Zahl der Mg2Si-Teilchen deren Größe zwischen 0,5 µm und 5 µm liegt, 150 bis 2000 pro mm2 und vorzugsweise 300 bis 1500 pro mm2 beträgt.
  14. Band nach Anspruch 13, wobei Zn ≤ 0,5.
  15. Verwendung eines Produktes nach einem der Ansprüche 1 bis 14 mit einem Zinkgehalt kleiner oder gleich 0,5 % im Schiffbau.
  16. Verwendung eines Produktes nach einem der Ansprüche 1 oder 3 bis 13 mit einem Zinkgehalt größer 0,5 % und einem Schweißnahtschutz für den Schiffbau.
  17. Verwendung eines Produktes nach einem der Ansprüche 1 bis 13 für den Industriefahrzeugbau.
EP97420125A 1996-08-06 1997-07-23 Produkt aus AlMgMn-Legierung für Schweissstrukturen mit verbesserter Korossionsbeständigkeit Expired - Lifetime EP0823489B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9610085A FR2752244B1 (fr) 1996-08-06 1996-08-06 Produit pour construction soudee en alliage almgmn a tenue a la corrosion amelioree
FR9610085 1996-08-06

Publications (3)

Publication Number Publication Date
EP0823489A1 EP0823489A1 (de) 1998-02-11
EP0823489B1 EP0823489B1 (de) 2000-11-02
EP0823489B2 true EP0823489B2 (de) 2007-08-22

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EP97420125A Expired - Lifetime EP0823489B2 (de) 1996-08-06 1997-07-23 Produkt aus AlMgMn-Legierung für Schweissstrukturen mit verbesserter Korossionsbeständigkeit

Country Status (8)

Country Link
US (1) US5908518A (de)
EP (1) EP0823489B2 (de)
JP (1) JPH1088270A (de)
AU (1) AU709909C (de)
DE (2) DE823489T1 (de)
DK (1) DK0823489T4 (de)
ES (1) ES2152073T5 (de)
FR (1) FR2752244B1 (de)

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DE10231422A1 (de) * 2001-08-13 2003-02-27 Corus Aluminium Nv Aluminium-Magnesium-Legierungserzeugnis
FR2837499B1 (fr) * 2002-03-22 2004-05-21 Pechiney Rhenalu PRODUITS EN ALLIAGES Al-Mg POUR CONSTRUCTION SOUDEE
EP1479786B8 (de) * 2003-05-20 2007-08-01 Aleris Aluminum Duffel BVBA Schmiedealumniumlegierung
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US20150132181A1 (en) * 2013-11-11 2015-05-14 Stephen L. Anderson Aluminum welding filler metal, casting and wrought metal alloy
CN103774067A (zh) * 2014-02-26 2014-05-07 常州大学 一种提高6000系铝合金晶间腐蚀抗力的双级时效方法
CN103981404B (zh) * 2014-05-04 2017-02-22 南安市国高建材科技有限公司 一种耐蚀、易加工铝合金板材、制造方法及其应用
CN104195390A (zh) * 2014-09-23 2014-12-10 中南大学 一种高强耐蚀耐热易成型Al-Mg合金
CN106834823B (zh) * 2016-12-22 2018-07-03 中电科技（武汉）电子信息发展有限责任公司 一种铝合金带材
CN106834826B (zh) * 2016-12-22 2018-07-03 中电科技（武汉）电子信息发展有限责任公司 一种铝合金带材及其制造方法
EP3592876B1 (de) 2017-03-08 2023-01-04 Nanoal LLC Leistungsstarke aluminiumlegierungen der serie 5000
JP6886861B2 (ja) * 2017-05-29 2021-06-16 三菱造船株式会社 アルミニウム合金の溶接方法
CN108161273A (zh) * 2018-03-06 2018-06-15 东北大学 一种Al-Mg-Zn-Mn铝合金焊丝及其制备方法
CN110551928A (zh) * 2019-09-17 2019-12-10 新疆众和股份有限公司 一种5654铝合金焊丝线坯的生产方法
JP7273174B2 (ja) 2019-12-27 2023-05-12 オブシュチェストボ・エス・オグラニチェノイ・オトベツトベノスティウ“オベディネナヤ・コンパニヤ・ルサール・インツェネルノ－テフノロギチェスキー・ツェントル” アルミニウム系合金
CN112708810B (zh) * 2020-12-17 2021-10-22 华南理工大学 一种高Fe含量的挤压铸造再生铝镁合金及其制备方法
CN115233051B (zh) * 2022-09-20 2023-01-24 中铝材料应用研究院有限公司 一种船舶用高强耐蚀铝合金板材的制备方法

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DE69703420T3 (de) 2008-04-10
JPH1088270A (ja) 1998-04-07
AU709909C (en) 2006-07-13
DE69703420T2 (de) 2001-05-10
DK0823489T4 (da) 2008-08-18
ES2152073T5 (es) 2008-03-16
AU709909B2 (en) 1999-09-09
FR2752244A1 (fr) 1998-02-13
DE69703420D1 (de) 2000-12-07
EP0823489A1 (de) 1998-02-11
DK0823489T3 (da) 2001-01-29
EP0823489B1 (de) 2000-11-02
AU3320197A (en) 1998-02-12
US5908518A (en) 1999-06-01
FR2752244B1 (fr) 1998-09-18
ES2152073T3 (es) 2001-01-16
DE823489T1 (de) 1998-07-16

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