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US20190024219A1 - HARDENABLE Al-Mg-Si-BASED ALUMINUM ALLOY - Google Patents

HARDENABLE Al-Mg-Si-BASED ALUMINUM ALLOY Download PDF

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Publication number
US20190024219A1
US20190024219A1 US16/071,600 US201716071600A US2019024219A1 US 20190024219 A1 US20190024219 A1 US 20190024219A1 US 201716071600 A US201716071600 A US 201716071600A US 2019024219 A1 US2019024219 A1 US 2019024219A1
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US
United States
Prior art keywords
weight
aluminum alloy
maximum
aluminum
content
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.)
Abandoned
Application number
US16/071,600
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English (en)
Inventor
Helmut Antrekowitsch
Thomas Ebner
Werner Fragner
Helmut Kaufmann
Stefan Pogatscher
Ramona Prillhofer
Peter J. Uggowitzer
Marion Werinos
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.)
Amag Rolling GmbH
Original Assignee
Amag Rolling GmbH
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 Amag Rolling GmbH filed Critical Amag Rolling GmbH
Publication of US20190024219A1 publication Critical patent/US20190024219A1/en
Assigned to AMAG ROLLING GMBH reassignment AMAG ROLLING GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Antrekowitsch, Helmut, Pogatscher, Stefan, UGGOWITZER, PETER J., Werinos, Marion, TOSONE, RAMONA, EBNER, THOMAS, KAUFMANN, HELMUT, FRAGNER, Werner
Abandoned legal-status Critical Current

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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
    • C22C21/06—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
    • 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
    • C22C30/00—Alloys containing less than 50% by weight of each constituent
    • C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C30/00—Alloys containing less than 50% by weight of each constituent
    • C22C30/04—Alloys containing less than 50% by weight of each constituent containing tin or lead
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C30/00—Alloys containing less than 50% by weight of each constituent
    • C22C30/06—Alloys containing less than 50% by weight of each constituent containing zinc
    • 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 a hardenable Al—Mg—Si-based aluminum alloy.
  • WO2013/124472A1 suggests adding to the solid solution of the aluminum alloy a vacancy-active trace element, namely tin (Sn) and/or indium (In).
  • main and minor alloying elements can not be arbitrarily varied in their content in the aluminum alloy, because in addition to a desirable high thermosetting capability other mechanical and/or chemical requirements—such as formability, strength, ductility and/or corrosion resistance—need to be met. This requires, for example, high concentrations of main alloying elements in the aluminum alloy in order to form certain hot precipitations.
  • the aluminum alloy should be particularly suitable for the use of secondary aluminum.
  • the aluminum alloy comprises from 0.6 to 1% by weight of magnesium (Mg), from 0.2 to 0.7% by weight of silicon (Si), from 0.16 to 0.7% by weight of iron (Fe), from 0.05 to 0.4% by weight of copper (Cu), a maximum of 0.15% by weight (or from 0 to 0.15% by weight) of manganese (Mn), a maximum of 0.35% by weight (or from 0 to 0.35% by weight) of chromium (Cr), a maximum of 0.2% by weight (or from 0 to 0.2% by weight) of zirconium (Zr), a maximum of 0.25% by weight (or from 0 to 0.25% by weight) of zinc (Zn), a maximum of 0.15% by weight (or from 0 to 0.15% by weight) of titanium (Ti), 0.005 to 0.075% by weight of tin (Sn) and/or indium (In), and the remainder aluminum and production-related unavoidable impurities, wherein the ratio of the ratio of the ratio of the ratio
  • An aluminum alloy tuned so closely in Si and Fe content which tuning can be recognized, for example, in the hatched area in FIG. 1 , can, because of the upper limit of said provision, ensure sufficient solubility of tin and/or indium in the solid solution of the aluminum alloy, which slows down the precipitation behavior during cold age-hardening and thus promotes the storage stability of the aluminum alloy.
  • adequate precipitation behavior during hot age-hardening is to be expected, whereby high strength values can be achieved in the hot age-hardening and the aluminum alloy itself can achieve or improve those mechanical and chemical properties which are known from 6xxx aluminum alloy with a higher content of main and secondary alloy elements.
  • composition according to the invention may also be particularly suitable for the use of secondary aluminum for this purpose due to the comparatively high Fe content.
  • the Al—Mg—Si-aluminum alloy can comprise impurities each having a maximum of 0.05% by weight and a total of at most 0.15% by weight.
  • maximum weight percentages such as those found with Mn, Cr, Zr, Zn or titanium, for example, can be considered as starting from 0.
  • the storage stability and the thermosetting capability of the aluminum alloy can be further improved when the parameter A is in the range of 0.26 to 0.34% by weight.
  • the solubility of Sn can thus become relatively high and Si has only a low impact on cold age-hardening. This allows an unexpectedly high stability at room temperature.
  • this alloy set in this way can achieve surprisingly high strength after hot age-hardening, for example by means of heat aging, although this alloy has a comparatively low Si content.
  • the components affecting the solubility of Sn can be matched to each other in a further improved manner.
  • Ti can form phases with Si, which can have a positive influence on the solubility of Sn.
  • the storage stability of the aluminum alloy is thus further improved.
  • the ratio of the weight percentages of Si/Fe is less than 2, by increasing the setting of Si by Fe, the content of dissolved Si in the aluminum alloy can be significantly reduced.
  • the solubility of tin and/or indium in the solid solution of the Al—Mg—Si-aluminum alloy can be improved, which can further increase the storage stability.
  • a comparatively high solubility of tin and/or indium in the solid solution of the Al—Mg—Si-aluminum alloy can be achieved when the ratio of the weight percentages of Si/Mg is in the range of 0.3 to 0.9.
  • the aluminum alloy has at least 0.25% by weight of copper (Cu), based on this comparatively high Cu content, it is possible to intervene in a compensatory manner with respect to the adverse effects of Mg and Si on the solubility of Sn in the solid solution of Al—Mg—Si-aluminum alloy.
  • Cu copper
  • An excellent storage stability of the aluminum alloy can be achieved if it has tin (Sn) in the range of 0.005 to 0.05% by weight in solid solution in the aluminum mixed crystal.
  • solid solution may denote a state in which an alloying element is dispersed in a solid matrix.
  • the aluminum alloy belongs to the 6xxx series.
  • the aluminum alloy is an EN AW-6061 aluminum alloy.
  • the aluminum alloy has at most 0.05% by weight of chromium (Cr) and more than 0.05% by weight of zirconium (Zr), the quenching sensitivity for Sn can be reduced and Sn can also be retained in solid solution in the aluminum mixed crystal at comparatively low quenching rates. In addition, it is thus possible, even with heavy plates, to achieve optimum storage stability and thermosetting capability.
  • the aluminum alloy may contain at least 0.02% by weight of chromium (Cr) in order to possibly improve the corrosion behavior.
  • FIG. 1 is a graphical depiction of the Si and Fe content of alloys 1 and 2 listed in Table 1, in comparison to the Si/Fe content tuned according to the invention.
  • FIG. 2 is a graphical comparison of the storage stability of alloys 1 and 2 listed in Table 1.
  • FIG. 3 is a graphical comparison of the temperature-dependent age-hardening of alloys 1 and 2 listed in Table 1.
  • the aluminum alloy 1 of Table 1 essentially corresponds to a standard alloy AA6061 after addition of the trace element Sn, wherein it is conceivable to use indium or a combination of Sn and In instead of tin.
  • Alloy 2 represents the composition according to the invention of the 6xxx series and is comparatively recycling-friendly due to the comparatively high Fe content.
  • the aluminum alloy 1 is well outside the Si/Fe content tuned according to the invention, which is shown by way of example in FIG. 1 .
  • the aluminum alloy 2 is placed substantially centrally in this tuned Si/Fe content.
  • Both aluminum alloys 1 and 2 were solution-annealed in solid solution, quenched, and cold-hardened by aging at room temperature, and then hot-hardened. Solution annealing was carried out at a temperature greater than 530 degrees Celsius—quenching at a quench rate greater than 20 degrees Celsius/second. Both alloys 1 and 2 were subjected to a storage time or cold age-hardening of 180 days [d] and 30-minute hot age-hardening at different temperatures. Brinell hardness [HBW] was determined during cold aging and after hot aging.
  • the alloy 1 undergoes a comparatively rapidly increasing cold hardening during storage at room temperature after only 14 days—which leads disadvantageously to a comparatively high and increasing Brinell hardness over a longer storage time and has a disadvantageous effect on forming before hot age-hardening.
  • alloy 2 shows an onset of cold age-hardening only after approx. 180 days, whereby the alloy 2 according to the invention is considered to be particularly resistant to storage.
  • Such a surprisingly high storage stability has not yet been observed with any 6xxx alloy. This leads to an unexpected, enormous gain in the manipulation time of the alloy after quenching in a soft state.

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  • 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)
  • Cell Electrode Carriers And Collectors (AREA)
  • Laminated Bodies (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Conductive Materials (AREA)
  • Heat Treatment Of Steel (AREA)
  • Materials For Medical Uses (AREA)
  • Prevention Of Electric Corrosion (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Powder Metallurgy (AREA)
  • Continuous Casting (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
US16/071,600 2016-01-22 2017-01-20 HARDENABLE Al-Mg-Si-BASED ALUMINUM ALLOY Abandoned US20190024219A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP16152467.3A EP3196324B1 (de) 2016-01-22 2016-01-22 Aushärtbare aluminiumlegierung auf al-mg-si-basis
EP16152467.3 2016-01-22
PCT/EP2017/051243 WO2017125582A1 (de) 2016-01-22 2017-01-20 Aushärtbare aluminiumlegierung auf al-mg-si-basis

Publications (1)

Publication Number Publication Date
US20190024219A1 true US20190024219A1 (en) 2019-01-24

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US16/071,600 Abandoned US20190024219A1 (en) 2016-01-22 2017-01-20 HARDENABLE Al-Mg-Si-BASED ALUMINUM ALLOY

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US (1) US20190024219A1 (es)
EP (2) EP3196324B1 (es)
JP (1) JP7208005B2 (es)
KR (1) KR102649425B1 (es)
CN (1) CN108779522B (es)
AU (1) AU2017208641A1 (es)
BR (1) BR112018014843B1 (es)
CA (1) CA3011631A1 (es)
CL (1) CL2018001954A1 (es)
ES (1) ES2702729T3 (es)
IL (1) IL260680B (es)
MX (1) MX376904B (es)
PL (1) PL3196324T3 (es)
RU (1) RU2737646C2 (es)
SG (2) SG11201806220YA (es)
SI (1) SI3196324T1 (es)
TR (1) TR201814631T1 (es)
WO (1) WO2017125582A1 (es)
ZA (1) ZA201804669B (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11932924B2 (en) 2019-03-13 2024-03-19 Novelis, Inc. Age-hardenable and highly formable aluminum alloys and methods of making the same

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* Cited by examiner, † Cited by third party
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CN109706351A (zh) * 2017-10-26 2019-05-03 遵义市吉祥富康门窗有限公司 一种铝合金及其制备方法
CN108977700B (zh) * 2018-08-20 2020-04-17 广东润盛科技材料有限公司 一种铝合金板及其制备方法
CN110951998B (zh) * 2019-11-28 2020-12-08 辽宁忠旺集团有限公司 一种高温稳定6系铝合金型材的生产工艺
CN113737064B (zh) * 2021-08-31 2022-04-08 华中科技大学 一种高性能锻件用Al-Mg-Si合金及其制备方法
KR20250086646A (ko) * 2022-10-20 2025-06-13 아르코닉 테크놀로지스 엘엘씨 신규 6xxx 알루미늄 합금

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11932924B2 (en) 2019-03-13 2024-03-19 Novelis, Inc. Age-hardenable and highly formable aluminum alloys and methods of making the same
US12247271B2 (en) 2019-03-13 2025-03-11 Novelis Inc. Age-hardenable and highly formable aluminum alloys and methods of making the same

Also Published As

Publication number Publication date
RU2018130158A3 (es) 2020-02-25
EP3443134A1 (de) 2019-02-20
PL3196324T3 (pl) 2019-04-30
SG10202007019WA (en) 2020-08-28
IL260680B (en) 2021-08-31
CA3011631A1 (en) 2017-07-27
MX376904B (es) 2025-03-07
KR102649425B1 (ko) 2024-03-19
WO2017125582A1 (de) 2017-07-27
JP7208005B2 (ja) 2023-01-18
CL2018001954A1 (es) 2019-01-25
EP3196324B1 (de) 2018-09-19
RU2018130158A (ru) 2020-02-25
CN108779522B (zh) 2020-12-11
ZA201804669B (en) 2021-03-31
MX2018008973A (es) 2019-01-21
ES2702729T3 (es) 2019-03-05
TR201814631T1 (tr) 2018-11-21
RU2737646C2 (ru) 2020-12-02
SG11201806220YA (en) 2018-08-30
JP2019507248A (ja) 2019-03-14
CN108779522A (zh) 2018-11-09
BR112018014843A2 (pt) 2020-10-27
SI3196324T1 (sl) 2019-03-29
BR112018014843B1 (pt) 2022-11-29
KR20180136434A (ko) 2018-12-24
AU2017208641A1 (en) 2018-08-02
EP3196324A1 (de) 2017-07-26

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