EP2103701A1 - Alliage d'aluminium et procédé de fabrication d'un produit à partir d'un alliage d'aluminium - Google Patents

Alliage d'aluminium et procédé de fabrication d'un produit à partir d'un alliage d'aluminium Download PDF

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Publication number
EP2103701A1
EP2103701A1 EP09001885A EP09001885A EP2103701A1 EP 2103701 A1 EP2103701 A1 EP 2103701A1 EP 09001885 A EP09001885 A EP 09001885A EP 09001885 A EP09001885 A EP 09001885A EP 2103701 A1 EP2103701 A1 EP 2103701A1
Authority
EP
European Patent Office
Prior art keywords
product
temperature
aluminum alloy
mass
range
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.)
Granted
Application number
EP09001885A
Other languages
German (de)
English (en)
Other versions
EP2103701B1 (fr
Inventor
Hoch Erich
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.)
Fw Brokelmann Aluminiumwerk & Cokg GmbH
Original Assignee
Fw Brokelmann Aluminiumwerk & Cokg 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.)
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Publication date
Application filed by Fw Brokelmann Aluminiumwerk & Cokg GmbH filed Critical Fw Brokelmann Aluminiumwerk & Cokg GmbH
Priority to PL09001885T priority Critical patent/PL2103701T3/pl
Publication of EP2103701A1 publication Critical patent/EP2103701A1/fr
Application granted granted Critical
Publication of EP2103701B1 publication Critical patent/EP2103701B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • C22C21/02—Alloys based on aluminium with silicon 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
    • 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
    • C22F1/05—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 of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions

Definitions

  • the invention relates to an aluminum alloy, in particular for processing by extrusion and a method for producing a product from such an aluminum alloy, wherein a semifinished product produced from the aluminum alloy is homogenized by heating, the homogenized semi-finished product is brought to use temperature and by hot processing on product form.
  • Aluminum alloys have long been known for their different properties and for very different uses in metalworking. Due to its low density, aluminum is fundamentally interesting as a metal in the construction of transport vehicles, especially for those means of transport which have to accelerate their own mass, the mass of which therefore decisively influences the energy consumption of the means of transport. Aluminum is therefore increasingly of interest as a material in vehicle and aircraft construction.
  • the advantageous low density of aluminum faces low strength and comparatively high brittleness (low yield strength and low ductility).
  • aluminum alloys which are disadvantageous in particular for applications in the body structure sector, can be avoided by using small amounts of substance in aluminum alloys, with aluminum alloys being able to achieve strengths which are similar to those of steel. It is known, aluminum in the range of a total of a few mass% other elements, in particular metals, such as. As iron, silicon, copper, titanium, manganese, etc., to mix.
  • composition of the aluminum alloy itself as well as the further treatment of the aluminum alloy has a decisive influence on the strength and corrosion properties of the aluminum alloy. Slight changes in the composition of the aluminum alloy may result in surprising changes in the mechanical properties of the aluminum alloy.
  • aluminum wrought alloys are known, which are well usable for hot and cold forming and on the other hand aluminum casting alloys, which are suitable for use with casting, but a transformation can be subjected only to a very limited.
  • Other alloys are in turn suitable for curing by aging annealing, others - depending on the composition - again not.
  • Such an aluminum alloy is eminently suitable for hot working and can be aftertreated to easily achieve critical yield stresses R p0.2 greater than 280 MPa.
  • critical yield stresses R p0.2 greater than 280 MPa are also advantageous.
  • Such an aluminum alloy has exceptionally good properties in terms of its processibility by an extrusion process.
  • the invention therefore further relates to a method for producing a product from an aluminum alloy, wherein the aluminum alloy is configured in the aforementioned composition.
  • the semifinished product consisting of the aluminum alloy which may for example be in the form of bolts, is homogenized by keeping it in the temperature range of 550 ° C. and 590 ° C. for a period of essentially 3 to 5 hours, in particular in the temperature range between 560 ° C and 580 ° C, and it is particularly preferred if the temperature is set within the Homogenticiansphase fixed in the specified temperature ranges.
  • an operating temperature in the range of substantially 470 ° C to about 500 ° C. becomes.
  • the aluminum alloy in question here can be processed gently, without jeopardizing the previously achieved by the homogenization advantageous material properties.
  • the hot working of the semifinished product is carried out by extrusion, wherein here press speeds in the range of substantially 4m / min to 10m / min have been found to be advantageous.
  • the value of the pressing speed depends on the profile geometry to be achieved, that is, inter alia, on the forming work to be performed in the die.
  • a press speed in the range of 6m / min to 8m / min has proven to be particularly advantageous, with a press speed of 6m / min has been found suitable for most applications.
  • the cooling of the product following the hot working is of considerable importance for the material properties of the product obtained. It has been found, in particular, that a particularly rapid cooling of the product after hot working is conducive, in particular a cooling with a temperature gradient of at least -20 ° C / s, preferably an even greater cooling rate with a temperature gradient of at least -40 ° C. / s, with a temperature gradient of at least -50 ° C / s being particularly advantageous.
  • the effect achieved by the cooling influencing the material properties of the previously hot worked product according to a further embodiment of the method is particularly effective when the cooling of the product to a temperature of substantially below 100 ° C.
  • the strength of the product is increased by final curing, in particular by removal of the product over a period of time substantially 1 to 3 hours, preferably less than 2 hours, in a temperature range of substantially 100 ° C to 210 ° C, with a temperature range of 200 ° C to 210 ° C being preferred. Curing takes place in particular by selecting a temperature over the duration of the aging in the specified temperature ranges.
  • a semi-finished product is made in the form of an aluminum bolt with a diameter of 200 mm.
  • This aluminum stud is homogenized for 5 hours at 570 ° C, resulting in a uniformly fine-grained cast structure, the globulitic and fine-celled over the entire cross section; the achieved grain size is clearly smaller than 150 ⁇ m.
  • the now present as a profile product is cooled as soon as possible from about 530 ° C to below 100 ° C, in this case within less than 10 seconds.
  • the abrupt profile cooling is essential for the material properties necessarily to be achieved in body structure engineering.
  • the extruded section thus obtained is finally cured for one hour at 205 ° C.
  • the resulting material has a yield strength R p0.2 of significantly more than 280 MPa and is able to absorb deformation work even at crash test loads, without losing the inner cohesion - that is, without tearing - resulting in both small and true on a large scale.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Forging (AREA)
  • Extrusion Of Metal (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Cookers (AREA)
  • Powder Metallurgy (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
EP09001885A 2008-02-20 2009-02-11 Alliage d'aluminium et procédé de fabrication d'un produit à partir d'un alliage d'aluminium Active EP2103701B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09001885T PL2103701T3 (pl) 2008-02-20 2009-02-11 Stop aluminiowy i sposób wytwarzania produktu ze stopu aluminiowego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008010157A DE102008010157A1 (de) 2008-02-20 2008-02-20 Aluminiumlegierung und Verfahren zur Herstellung eines Produkts aus einer Aluminiumlegierung

Publications (2)

Publication Number Publication Date
EP2103701A1 true EP2103701A1 (fr) 2009-09-23
EP2103701B1 EP2103701B1 (fr) 2010-06-09

Family

ID=40897306

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09001885A Active EP2103701B1 (fr) 2008-02-20 2009-02-11 Alliage d'aluminium et procédé de fabrication d'un produit à partir d'un alliage d'aluminium

Country Status (7)

Country Link
EP (1) EP2103701B1 (fr)
AT (1) ATE470731T1 (fr)
DE (2) DE102008010157A1 (fr)
DK (1) DK2103701T3 (fr)
ES (1) ES2346828T3 (fr)
PL (1) PL2103701T3 (fr)
PT (1) PT2103701E (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2728026A1 (fr) 2010-04-26 2014-05-07 Sapa AB Matériau d'aluminium tolérant les dommages présentant une microstructure lamellaire
EP2841611B1 (fr) 2012-04-25 2018-04-04 Norsk Hydro ASA Profil extrudé d'une alliage d'aluminium Al-Mg-Si à propriétés améliorées
CN113403509A (zh) * 2021-06-23 2021-09-17 上海嘉朗实业南通智能科技有限公司 一种高强度铝合金螺栓材料及其制备方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107675034B (zh) * 2017-09-18 2019-03-22 山东友升铝业有限公司 一种改善挤压型材粗晶用变形铝合金

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56123346A (en) * 1980-02-29 1981-09-28 Showa Alum Corp Aluminum alloy for extrusion with superior hardenability
US4525326A (en) * 1982-09-13 1985-06-25 Swiss Aluminium Ltd. Aluminum alloy
WO2002038821A1 (fr) * 2000-11-08 2002-05-16 Norsk Hydro Asa Procede permettant la fabrication de produits formes en alliage d'aluminium et utilisation de tels produits
US20070051443A1 (en) * 2005-09-02 2007-03-08 Lukasak David A Method of press quenching aluminum alloy 6020

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT71986B (de) * 1914-02-26 1916-06-26 Schwenningen Textilmaschf Pickerführung für Oberschlagwebstühle mit selbsttätiger Spulenauswechslung.
JPH11310841A (ja) * 1998-04-28 1999-11-09 Nippon Steel Corp 疲労強度に優れたアルミニウム合金押出形材およびその製造方法
US6630039B2 (en) * 2000-02-22 2003-10-07 Alcoa Inc. Extrusion method utilizing maximum exit temperature from the die
ES2238584T3 (es) * 2001-07-09 2005-09-01 Corus Aluminium Walzprodukte Gmbh Aleacion de al-mg-si de alta resistencia.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56123346A (en) * 1980-02-29 1981-09-28 Showa Alum Corp Aluminum alloy for extrusion with superior hardenability
US4525326A (en) * 1982-09-13 1985-06-25 Swiss Aluminium Ltd. Aluminum alloy
WO2002038821A1 (fr) * 2000-11-08 2002-05-16 Norsk Hydro Asa Procede permettant la fabrication de produits formes en alliage d'aluminium et utilisation de tels produits
US20070051443A1 (en) * 2005-09-02 2007-03-08 Lukasak David A Method of press quenching aluminum alloy 6020

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2728026A1 (fr) 2010-04-26 2014-05-07 Sapa AB Matériau d'aluminium tolérant les dommages présentant une microstructure lamellaire
US10661338B2 (en) 2010-04-26 2020-05-26 Hydro Extruded Solutions Ab Damage tolerant aluminium material having a layered microstructure
EP2841611B1 (fr) 2012-04-25 2018-04-04 Norsk Hydro ASA Profil extrudé d'une alliage d'aluminium Al-Mg-Si à propriétés améliorées
CN113403509A (zh) * 2021-06-23 2021-09-17 上海嘉朗实业南通智能科技有限公司 一种高强度铝合金螺栓材料及其制备方法

Also Published As

Publication number Publication date
DE102008010157A1 (de) 2009-09-03
DE502009000030D1 (de) 2010-07-22
ATE470731T1 (de) 2010-06-15
DK2103701T3 (da) 2011-01-10
ES2346828T3 (es) 2010-10-20
PT2103701E (pt) 2010-08-24
EP2103701B1 (fr) 2010-06-09
PL2103701T3 (pl) 2011-04-29

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