US3287185A - Process for improving alloys based on aluminum, zinc and magnesium, and alloys obtained thereby - Google Patents

Process for improving alloys based on aluminum, zinc and magnesium, and alloys obtained thereby Download PDF

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Publication number
US3287185A
US3287185A US323584A US32358463A US3287185A US 3287185 A US3287185 A US 3287185A US 323584 A US323584 A US 323584A US 32358463 A US32358463 A US 32358463A US 3287185 A US3287185 A US 3287185A
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United States
Prior art keywords
alloy
zinc
aluminum
alloys
magnesium
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US323584A
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English (en)
Inventor
Vachet Pierre
Perrier Guido-Edgar
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Pechiney SA
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Pechiney SA
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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
    • C22C21/10—Alloys based on aluminium with zinc as the next major constituent

Definitions

  • the present invention concerns a process for improving alloys based on aluminum, zinc and magnesium, and the alloys obtained by applying this process.
  • Alloys are described by symbols prescribed by norm AFNOR number A 02-001 of May 1944; thus the symbol A-ZG describes an alloy containing aluminum, zinc and magnesium, while the symbol A-Z4G describes an alloy theoretically containing 4% of zinc and less than 4% of magnesium, the rest being made up of aluminum.
  • alloys are based on aluminum, zinc and magnesium, the other components being optional and being essentially intended to improve the characteristics of the alloy by making the grain fine, by improving the surface of the alloy, its mechanical properties, its capacity for welding, and its suitability for anodic oxidation and surface treatment, and by increasing resistance to corrosion, with or without tension. Components other than those mentioned above may be used to obtain certain special properties.
  • alloys have the common feature of being selfhardening; that is to say, they gain desirable characteristics by natural aging, after being made into a solid solution, either by an extrusion operation or separate heat treatment in a range of temperatures from about 350 to 500 C. followed by cooling in air to room temperature or by quenching or rapid cooling.
  • the present invention has for its object a process enabling an alloy of which the basic components are aluminum, zinc and magnesium and which has undergone quenching or cooling in air, to be given mechanical properties similar to those obtained in several months of natural aging, but in a treatment that may be carried out within a few days and preferably within 48 hours, and it is a related object to produce new and improved aluminum, zinc and magnesium base alloys and products by the described process.
  • cadmium is added to the base alloy and, after the resultant alloy has undergone a quenching or cooling in air operation, it is subjected to an artificial aging treatment at a temperature within the range of to C. for a time which may range from 0 up to 48 hours, and preferably 10 to 48 hours.
  • the alloy according to the invention is made up as follows:
  • Breaking load R l8 kg./sq. mm.
  • Elastic limit E 9 kg./sq. mm.
  • Elongation A 22% it hardens slowly after this treatment, and the following characteristics are obtained after 30 to 45 days:
  • the alloy has average resistance and great ductility.
  • Table I compares the effects of these artificial aging Percent processes, after heat treatment consisting of. heating for Zinc 2.5 to 4 2 hours at 425 followed by cooling in air, firstly on a Magnesium 1.5 to 2.5 conventional A-Z4G alloy, of which the composition is Cadmium 0.005 to 0.5 given above, and secondly on the same alloy with 0.05% Manganese 0 to 0.7 of cadmium added to it; the effect produced on the alloy Chromium 0 to 0.5 containing cadmium by the 24-hour artificial aging process Iron 0 to 0.5 at 160 C. is virtually identical with the efiect produced Titanium- 0 to 0.5 on the conventional alloy by the 200-hour artificial aging 25 Silicon 0 to 0.5 at 100 C. Remainder aluminum plus impurities.
  • Percent The amount of cadmium incorporated may be from Zinc 2 to 9 0.005%, constituting a minimum below which no meas Magnesium 0,5 to 3 urable effect can be ascertained, to 0.5%, the upper limit Manganese 0 to 1.5 above which the alloy becomes difiicult to cast.
  • the Chromium 0 t 0,5 cadmium has no perceptible undesirable effect on the Titanium 0 to.0.5 welding characteristics or corrosion resistance of the al- Silicon Q t 1 loys.
  • the alloys can still hardened by natural aging under Iron 0 t 1 the same conditions as for a corresponding alloy without Zirconium 0 t 0,5 1 cadmium. Copper 0 to 3 It will be understood that the invention includes the Cadmium 0.005 to 0.5
  • the alloy has been subjected to a solution heat treatment step which includes quenching or air cooling and which has been artificially aged to a temperature of Remainder aluminum plus impurities.
  • the alloy has been subjected to a solution heat treatment step which includes quenching or air cooling 5 6 and which has been artificially aged to a temperature of 2,915,390 12/1959 Criner 75142 100 to 180 C. for a time within the range of 6 to 48 3,031,299 4/1962 Criner 14832.5 hours.
  • a solution heat treatment step which includes quenching or air cooling 5 6 and which has been artificially aged to a temperature of 2,915,390 12/1959 Criner 75142 100 to 180 C. for a time within the range of 6 to 48 3,031,299 4/1962 Criner 14832.5 hours.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
US323584A 1962-11-15 1963-11-14 Process for improving alloys based on aluminum, zinc and magnesium, and alloys obtained thereby Expired - Lifetime US3287185A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR915526A FR1347204A (fr) 1962-11-15 1962-11-15 Procédé pour l'amélioration des alliages à base d'aluminium, de zinc et de magnésium et alliages obtenus

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US3287185A true US3287185A (en) 1966-11-22

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US323584A Expired - Lifetime US3287185A (en) 1962-11-15 1963-11-14 Process for improving alloys based on aluminum, zinc and magnesium, and alloys obtained thereby

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US (1) US3287185A (forum.php)
BE (1) BE639908A (forum.php)
CH (1) CH425240A (forum.php)
FR (1) FR1347204A (forum.php)
GB (1) GB1029486A (forum.php)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3414407A (en) * 1966-04-26 1968-12-03 Revere Copper & Brass Inc Aluminum-zinc-magnesium alloy
US3620854A (en) * 1968-02-23 1971-11-16 North American Rockwell Aluminum casting alloy
US4832758A (en) * 1973-10-26 1989-05-23 Aluminum Company Of America Producing combined high strength and high corrosion resistance in Al-Zn-MG-CU alloys
US4863528A (en) * 1973-10-26 1989-09-05 Aluminum Company Of America Aluminum alloy product having improved combinations of strength and corrosion resistance properties and method for producing the same
US5221377A (en) * 1987-09-21 1993-06-22 Aluminum Company Of America Aluminum alloy product having improved combinations of properties
US5496426A (en) * 1994-07-20 1996-03-05 Aluminum Company Of America Aluminum alloy product having good combinations of mechanical and corrosion resistance properties and formability and process for producing such product
US5643372A (en) * 1993-09-28 1997-07-01 Pechiney Rhenalu Process for the desensitisation to intercrystalline corrosion of 2000 and 6000 series Al alloys and corresponding products
US20060174980A1 (en) * 2004-10-05 2006-08-10 Corus Aluminium Walzprodukte Gmbh High-strength, high toughness Al-Zn alloy product and method for producing such product
US20070204937A1 (en) * 2005-07-21 2007-09-06 Aleris Koblenz Aluminum Gmbh Wrought aluminium aa7000-series alloy product and method of producing said product
US20080173377A1 (en) * 2006-07-07 2008-07-24 Aleris Aluminum Koblenz Gmbh Aa7000-series aluminum alloy products and a method of manufacturing thereof
US20080173378A1 (en) * 2006-07-07 2008-07-24 Aleris Aluminum Koblenz Gmbh Aa7000-series aluminum alloy products and a method of manufacturing thereof
US20090269608A1 (en) * 2003-04-10 2009-10-29 Aleris Aluminum Koblenz Gmbh Al-Zn-Mg-Cu ALLOY WITH IMPROVED DAMAGE TOLERANCE-STRENGTH COMBINATION PROPERTIES
US20090320969A1 (en) * 2003-04-10 2009-12-31 Aleris Aluminum Koblenz Gmbh HIGH STENGTH Al-Zn ALLOY AND METHOD FOR PRODUCING SUCH AN ALLOY PRODUCT
CN101243196B (zh) * 2005-07-21 2011-01-12 阿勒里斯铝业科布伦茨有限公司 形变铝aa7000-系列合金产品和制造所述产品的方法
WO2020214750A1 (en) * 2019-04-19 2020-10-22 Magna International Inc. Non-heat-treated casting alloys for automotive structural applications
US11879166B2 (en) * 2018-11-12 2024-01-23 Novelis Koblenz Gmbh 7XXX-series aluminium alloy product

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3531337A (en) * 1966-12-26 1970-09-29 Ichiro Kawakatsu Hard aluminum alloy
DE1758496B1 (de) * 1968-06-14 1971-09-08 Vaw Ver Aluminium Werke Ag Verbundwerkstoffbahn zur herstellung von hohlkoerpern
JPS4958011A (forum.php) * 1972-10-06 1974-06-05
NO144777C (no) * 1976-06-24 1981-11-04 Alusuisse Korrosjonsbestandig aluminiumslegering.
US6302973B1 (en) * 1997-08-04 2001-10-16 Corus Aluminium Walzprodukte Gmbh High strength Al-Mg-Zn-Si alloy for welded structures and brazing application

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1785774A (en) * 1929-05-18 1930-12-23 Hybinette Patents Corp Plastic heat-treated aluminum alloy
US2076577A (en) * 1935-12-28 1937-04-13 Aluminum Co Of America Free cutting alloys
GB476930A (en) * 1936-03-16 1937-12-16 Tennyson Fraser Bradbury A new aluminium alloy
US2915390A (en) * 1958-01-13 1959-12-01 Aluminum Co Of America Aluminum base alloy
US3031299A (en) * 1960-08-23 1962-04-24 Aluminum Co Of America Aluminum base alloy

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1785774A (en) * 1929-05-18 1930-12-23 Hybinette Patents Corp Plastic heat-treated aluminum alloy
US2076577A (en) * 1935-12-28 1937-04-13 Aluminum Co Of America Free cutting alloys
GB476930A (en) * 1936-03-16 1937-12-16 Tennyson Fraser Bradbury A new aluminium alloy
US2915390A (en) * 1958-01-13 1959-12-01 Aluminum Co Of America Aluminum base alloy
US3031299A (en) * 1960-08-23 1962-04-24 Aluminum Co Of America Aluminum base alloy

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3414407A (en) * 1966-04-26 1968-12-03 Revere Copper & Brass Inc Aluminum-zinc-magnesium alloy
US3620854A (en) * 1968-02-23 1971-11-16 North American Rockwell Aluminum casting alloy
US4832758A (en) * 1973-10-26 1989-05-23 Aluminum Company Of America Producing combined high strength and high corrosion resistance in Al-Zn-MG-CU alloys
US4863528A (en) * 1973-10-26 1989-09-05 Aluminum Company Of America Aluminum alloy product having improved combinations of strength and corrosion resistance properties and method for producing the same
US5221377A (en) * 1987-09-21 1993-06-22 Aluminum Company Of America Aluminum alloy product having improved combinations of properties
US5643372A (en) * 1993-09-28 1997-07-01 Pechiney Rhenalu Process for the desensitisation to intercrystalline corrosion of 2000 and 6000 series Al alloys and corresponding products
US5496426A (en) * 1994-07-20 1996-03-05 Aluminum Company Of America Aluminum alloy product having good combinations of mechanical and corrosion resistance properties and formability and process for producing such product
US20090269608A1 (en) * 2003-04-10 2009-10-29 Aleris Aluminum Koblenz Gmbh Al-Zn-Mg-Cu ALLOY WITH IMPROVED DAMAGE TOLERANCE-STRENGTH COMBINATION PROPERTIES
US10472707B2 (en) 2003-04-10 2019-11-12 Aleris Rolled Products Germany Gmbh Al—Zn—Mg—Cu alloy with improved damage tolerance-strength combination properties
US20090320969A1 (en) * 2003-04-10 2009-12-31 Aleris Aluminum Koblenz Gmbh HIGH STENGTH Al-Zn ALLOY AND METHOD FOR PRODUCING SUCH AN ALLOY PRODUCT
US7883591B2 (en) 2004-10-05 2011-02-08 Aleris Aluminum Koblenz Gmbh High-strength, high toughness Al-Zn alloy product and method for producing such product
US20060174980A1 (en) * 2004-10-05 2006-08-10 Corus Aluminium Walzprodukte Gmbh High-strength, high toughness Al-Zn alloy product and method for producing such product
CN101243196B (zh) * 2005-07-21 2011-01-12 阿勒里斯铝业科布伦茨有限公司 形变铝aa7000-系列合金产品和制造所述产品的方法
US20070204937A1 (en) * 2005-07-21 2007-09-06 Aleris Koblenz Aluminum Gmbh Wrought aluminium aa7000-series alloy product and method of producing said product
US20080210349A1 (en) * 2006-07-07 2008-09-04 Aleris Aluminum Koblenz Gmbh Aa2000-series aluminum alloy products and a method of manufacturing thereof
US20080173378A1 (en) * 2006-07-07 2008-07-24 Aleris Aluminum Koblenz Gmbh Aa7000-series aluminum alloy products and a method of manufacturing thereof
US20080173377A1 (en) * 2006-07-07 2008-07-24 Aleris Aluminum Koblenz Gmbh Aa7000-series aluminum alloy products and a method of manufacturing thereof
US8002913B2 (en) 2006-07-07 2011-08-23 Aleris Aluminum Koblenz Gmbh AA7000-series aluminum alloy products and a method of manufacturing thereof
US8088234B2 (en) 2006-07-07 2012-01-03 Aleris Aluminum Koblenz Gmbh AA2000-series aluminum alloy products and a method of manufacturing thereof
US8608876B2 (en) 2006-07-07 2013-12-17 Aleris Aluminum Koblenz Gmbh AA7000-series aluminum alloy products and a method of manufacturing thereof
US11879166B2 (en) * 2018-11-12 2024-01-23 Novelis Koblenz Gmbh 7XXX-series aluminium alloy product
WO2020214750A1 (en) * 2019-04-19 2020-10-22 Magna International Inc. Non-heat-treated casting alloys for automotive structural applications
US12365966B2 (en) 2019-04-19 2025-07-22 Magna International Inc. Non-heat-treated casting alloys for automotive structural applications

Also Published As

Publication number Publication date
BE639908A (forum.php)
GB1029486A (en) 1966-05-11
CH425240A (fr) 1966-11-30
FR1347204A (fr) 1963-12-27

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