EP3825428A1 - Composant moulé sous pression et procédé de fabrication d'un composant moulé sous pression - Google Patents

Composant moulé sous pression et procédé de fabrication d'un composant moulé sous pression Download PDF

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Publication number
EP3825428A1
EP3825428A1 EP19211356.1A EP19211356A EP3825428A1 EP 3825428 A1 EP3825428 A1 EP 3825428A1 EP 19211356 A EP19211356 A EP 19211356A EP 3825428 A1 EP3825428 A1 EP 3825428A1
Authority
EP
European Patent Office
Prior art keywords
weight
minutes
die
cast component
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
EP19211356.1A
Other languages
German (de)
English (en)
Other versions
EP3825428B1 (fr
Inventor
Marc Hummel
Marius KOHLHEPP
Robin Müller
Heinz Werner HÖPPEL
Werner FRAGNER
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 casting GmbH
Audi AG
Friedrich Alexander Univeritaet Erlangen Nuernberg FAU
Original Assignee
AMAG casting GmbH
Audi AG
Friedrich Alexander Univeritaet Erlangen Nuernberg FAU
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
Priority to EP19211356.1A priority Critical patent/EP3825428B1/fr
Application filed by AMAG casting GmbH, Audi AG, Friedrich Alexander Univeritaet Erlangen Nuernberg FAU filed Critical AMAG casting GmbH
Priority to HUE19211356A priority patent/HUE061156T4/hu
Priority to PL19211356.1T priority patent/PL3825428T3/pl
Priority to PCT/EP2020/083393 priority patent/WO2021105229A1/fr
Priority to US17/779,777 priority patent/US20230008295A1/en
Priority to MX2022006232A priority patent/MX2022006232A/es
Priority to CN202080079803.4A priority patent/CN115279931A/zh
Publication of EP3825428A1 publication Critical patent/EP3825428A1/fr
Application granted granted Critical
Publication of EP3825428B1 publication Critical patent/EP3825428B1/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
    • 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
    • C22F1/043—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 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
    • C22C21/02—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
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • C22C21/04—Modified aluminium-silicon alloys
    • 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
    • C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor

Definitions

  • the invention relates to a die-cast component and a method for producing this die-cast component.
  • This method also leads to good punch riveting suitability - that is, joining by forming - which is essentially dependent on the ductility of the die-cast component.
  • punch riveting using a dome die requires the highest deformability on the die-cast component compared to other dies (flat die, ball die, etc.). If the deformability of the material is not sufficient, cracks appear in the die-cast component on the die side.
  • a further improvement of the punch riveting suitability by increasing the ductility in turn causes losses in strength - which disadvantageously reduces crash-relevant FDI values.
  • the invention has also set itself the task of creating a die-cast component which, compared to known die-cast components, is characterized by improved punch rivet suitability with the same elongation at break and strength.
  • the invention solves the problem posed by the features of claim 1.
  • the aforementioned punch riveting suitability can be further improved if the die-cast component has a uniform elongation (A g ) of at least 6% and a necking elongation (A z ) of at least 4%.
  • the hardenable aluminum alloy has more than 6.5 to 9.0% by weight silicon (Si), in particular more than 6.5 to 8% by weight silicon (Si) .
  • Si 6.5 ⁇ wt.% Silicon (Si) ⁇ 9.0, for example, if the alloy is castable enough, primary phases that cause cracks can also be reduced, which can further improve joining by forming - all the more if the condition is met 6.5 ⁇ wt .-% silicon (Si) ⁇ 8.0 is met.
  • the castability of the die-cast alloy can be further improved if the aluminum alloy contains from 0.3 to 0.6% by weight of manganese (Mn).
  • the strength of the aluminum alloy can be further increased with a copper (Cu) content of 0.10 to 0.20% by weight.
  • the aluminum alloy can have a higher content of secondary aluminum, which can be increased further if the aluminum alloy has 0.15 to 0.25% by weight of iron (Fe). This is particularly the case when the aluminum alloy has from 0.15 to 0.25% by weight of iron (Fe).
  • the ductility and strength of the aluminum alloy can be improved with 0.05 to 0.15% by weight of titanium (Ti), whereas from 0.015 to 0.025% by weight of strontium (Sr) the ductility can be further optimized.
  • the die-cast component according to the invention is particularly suitable as a body component for a motor vehicle.
  • the die-cast component is preferably firmly connected to the other component via a punch rivet.
  • the die-cast component is preferably part of a motor vehicle as a body component.
  • the invention has set itself the task of changing the method in order to further improve the punch rivet suitability with almost constant FDI values on the die-cast component.
  • the method should be easy to handle and reproducible.
  • the invention solves the problem posed with regard to the method by the features of claim 8.
  • a shift in the mechanical properties from ductility towards strength can subsequently be compensated for by overaging of the die-cast component with the help of at least three-stage artificial aging.
  • a first artificial aging at a temperature in the range from 100 ° C to 180 ° C over a period of 40 minutes to 150 minutes a second artificial aging at a temperature in the range from 180 ° C to 300 ° C take place over a period of 30 minutes to 100 minutes and a third artificial aging at a temperature in the range from 230 ° C. to 300 ° C. over a period of 5 minutes to 120 minutes.
  • a comparatively high-strength Al-Si-aluminum alloy in the T7 condition thus results in a constriction A z that is greater than or equal to A g / 2 - which ensures crack-free punch riveting, in particular also punch riveting using a dome die, which on the die side has a particularly high deformability from the die-cast component.
  • This can also be achieved with a thin-walled die-cast component, for example for body construction, which at present was not reliably accessible to joining by forming, in particular punch riveting.
  • the method according to the invention only requires an adaptation in terms of temperature and holding time - which is comparatively easy to handle and thus improves the reproducibility of the method.
  • the method according to the invention can thus ensure the production of a die-cast component that has a yield point (R p0.2) of greater than 190 MPa and an elongation at break (A 5 ) of greater than or equal to 7% and whose uniform elongation (A g ) and constriction elongation (A z ) fulfills the condition A z ⁇ A g / 2.
  • the die-cast component produced can preferably have a uniform elongation (A g ) of at least 6% and a neck elongation (A z ) of at least 4%.
  • the aluminum alloy can optionally have the following further alloy elements, namely up to 0.8% by weight of manganese (Mn), from 0.08 to 0.35% by weight of zinc (Zn), from 0.08 to 0.35% by weight chromium (Cr), up to 0.30% by weight zirconium (Zr), up to 0.25% by weight iron (Fe), up to 0.15% by weight titanium (Ti) , up to 0.20% by weight copper (Cu), up to 0.025% by weight strontium (Sr), up to 0.2% by weight vanadium (V) and / or up to 0.2% by weight molybdenum ( Mon).
  • the constricting elongation A z can be further improved if the first annealing takes place at a temperature in the range from 390 ° C. to 410 ° C. and / or over a period of 50 minutes to 70 minutes.
  • this comparatively narrow temperature and time range allows the mechanical properties of the finished die-cast component to be influenced more reproducibly.
  • the second annealing takes place at a temperature in the range from 520 ° C. to 535 ° C., in particular from 525 ° C. to 535 ° C., and / or over a period of 25 to 30 minutes, there is a delay on, for example, due to the comparatively short holding time Die-cast component can be avoided. This also improves the reproducibility of the process.
  • the strength values can be set within comparatively narrow limits if the quenching is carried out with a temperature gradient in the range from 7 K / s to 20 K / s. This accelerated cooling can take place, for example, by cooling in moving air, etc.
  • the first artificial aging is preferably carried out at a temperature in the range from 140 ° C. to 160 ° C. and / or over a period of 110 minutes to 130 minutes in order to initially put the die-cast component in a T64 state.
  • a T6 state on the die-cast component is achieved in that the second artificial aging takes place at a temperature in the range from 190 ° C. to 210 ° C. and / or over a period of 50 minutes to 70 minutes.
  • the strength and ductility of the die-cast component can be set even more precisely.
  • a comparatively high constriction elongation (A z ) can thus be achieved, which can further reduce the risk of cracking when punch riveting the die-cast component.
  • Table 1 Overview of the aluminum alloys Alloys Si wt% Mg wt% Mn wt% Fe wt% Zn wt% Zr wt% Ti wt% Sr wt% AlSi10Mg0.4Mn 10.5 0.4 0.61 ⁇ 0.22 0.2 0.15 0.06 0.02 AlSi7Mg0.4 7th 0.4 0.05 ⁇ 0.15 0.2 0.15 0.06 0.02
  • alloys AlSi7Mg0.4 are within the content limits according to the invention according to the independent claims.
  • Alloy AlSi10Mg0.4Mn has a significantly higher Si content compared to alloy AlSi7Mg0.4 - and in this regard is therefore outside the content limits according to the invention.
  • the die-cast components P1 (prior art) and I1 (according to the invention) with the related Al-Si-aluminum alloys were subjected to the following heat treatment according to Table 2: Table 2: Overview of the heat treatment Component alloy glow Scare off Artificial aging first second first second third P1 AlSi10Mg0.4Mn 400 ° C 510 ° C 3 K / s 120 ° C 230 ° C 1 h 30 min 2 h 1 h I1 AlSi7Mg0.4 400 ° C 530 ° C 7 K / s 150 ° C 200 ° C 250 ° C 1 h 30 min 2 h 1 h 20 min
  • Fig. 1 the process of the heat treatment according to the invention is shown in more detail: First there is a two-stage annealing, namely a first annealing 1.1 and a subsequent second annealing 1.2, followed by quenching 2 and, after a certain storage time, a three-stage artificial aging with a first heating 3.1 and a subsequent second heating 3.2 and a subsequent third heating 3.3.
  • the cast component I1 passes through a wide variety of states from T4, T6x, T6 to T7, as in FIG Fig. 1 to recognize.
  • the difference in the second annealing 1.2 between the invention I1 and the prior art P1 can also be seen.
  • the second annealing in the prior art P1 takes place at a significantly lower temperature than in the invention I1.
  • the cast component P1 lacks a third artificial aging. Significant differences can also be found in the parameters of the second annealing - these differences lead overall to the fact that the cast component P1 is in the T6 state after the heat treatment.
  • the die-cast component I1 according to the invention has a significantly higher constriction elongation (A z ) - which means that the die-cast component I1 is particularly suitable for punch riveting or is generally particularly suitable for joining by forming.
  • the die-cast component I1 according to the invention also has, for example, particularly good suitability for thin-walled molded parts on a body of a vehicle, preferably a motor vehicle.

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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)
  • Forging (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Insertion Pins And Rivets (AREA)
EP19211356.1A 2019-11-25 2019-11-25 Composant moulé sous pression et procédé de fabrication d'un composant moulé sous pression Active EP3825428B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
HUE19211356A HUE061156T4 (hu) 2019-11-25 2019-11-25 Fröccsöntött alkatrész és eljárás annak elõállítására
PL19211356.1T PL3825428T3 (pl) 2019-11-25 2019-11-25 Element odlewany ciśnieniowo i sposób wytwarzania elementu odlewanego ciśnieniowo
EP19211356.1A EP3825428B1 (fr) 2019-11-25 2019-11-25 Composant moulé sous pression et procédé de fabrication d'un composant moulé sous pression
US17/779,777 US20230008295A1 (en) 2019-11-25 2020-11-25 Die-cast component, body component having said die-cast component, motor vehicle having said body component, and method for producing said die-cast component
PCT/EP2020/083393 WO2021105229A1 (fr) 2019-11-25 2020-11-25 Pièce coulée sous pression, élément de carrosserie doté de cette pièce coulée sous pression, véhicle à moteur pourvu de cet élément de carrosserie ainsi que procédé de fabrication de cette pièce coulée sous pression
MX2022006232A MX2022006232A (es) 2019-11-25 2020-11-25 Componente de fundicion a presion, componente de carroceria con este componente de fundicion a presion, vehiculo de motor con este componente de carroceria y metodo para producir este componente de fundicion a presion.
CN202080079803.4A CN115279931A (zh) 2019-11-25 2020-11-25 压铸构件、具有该压铸构件的车身部件、具有该车身部件的机动车以及用于制造该压铸构件的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19211356.1A EP3825428B1 (fr) 2019-11-25 2019-11-25 Composant moulé sous pression et procédé de fabrication d'un composant moulé sous pression

Publications (2)

Publication Number Publication Date
EP3825428A1 true EP3825428A1 (fr) 2021-05-26
EP3825428B1 EP3825428B1 (fr) 2022-11-16

Family

ID=68696246

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19211356.1A Active EP3825428B1 (fr) 2019-11-25 2019-11-25 Composant moulé sous pression et procédé de fabrication d'un composant moulé sous pression

Country Status (7)

Country Link
US (1) US20230008295A1 (fr)
EP (1) EP3825428B1 (fr)
CN (1) CN115279931A (fr)
HU (1) HUE061156T4 (fr)
MX (1) MX2022006232A (fr)
PL (1) PL3825428T3 (fr)
WO (1) WO2021105229A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4186988A1 (fr) * 2021-11-26 2023-05-31 AMAG casting GmbH Procédé de durcissement d'une pièce de coulée en alliage d'aluminium et pièce de coulée ainsi fabriquée
WO2023099520A1 (fr) * 2021-12-03 2023-06-08 Audi Ag Alliage de coulée sous pression d'aluminium
DE102022115004A1 (de) 2022-04-22 2023-10-26 GM Global Technology Operations LLC Mehrzweckaluminiumlegierungszusammensetzung
DE102022122535A1 (de) 2022-09-06 2024-03-07 Thyssenkrupp Steel Europe Ag Verfahren zur Herstellung einer Aluminiumgussstruktur

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115927925A (zh) * 2021-09-24 2023-04-07 通用汽车环球科技运作有限责任公司 低碳足迹铸铝组件
DE102021131973A1 (de) 2021-12-03 2023-06-07 Audi Aktiengesellschaft Aluminium-Druckgusslegierung
FR3140635A1 (fr) * 2022-10-07 2024-04-12 Renault S.A.S Alliage d’aluminium et procédé de fabrication associé

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01283336A (ja) * 1988-05-11 1989-11-14 Honda Motor Co Ltd 鋳物用アルミニウム合金およびアルミニウム合金鋳物品の製造方法
EP2138593A2 (fr) * 2008-06-24 2009-12-30 BDW technologies GmbH Pièce coulée et son procédé de fabrication
CN106244957A (zh) * 2016-03-24 2016-12-21 上海汇众汽车制造有限公司 AlSi7Mg铝合金铸件的热处理工艺
EP3176275A1 (fr) 2015-12-03 2017-06-07 Audi Ag Alliage de coulée sous pression de silicium/aluminium. procédé de fabrication d'un composant coulé sous pression en alliage et composants de carrosserie comprenant un tel composant coulé sous pression

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
JP2001316747A (ja) * 1999-08-31 2001-11-16 Asahi Tec Corp 非Ｃｕ系鋳造Ａｌ合金とその熱処理方法
ES2426226T3 (es) * 2009-06-30 2013-10-22 Hydro Aluminium Deutschland Gmbh Banda de AlMgSi para aplicaciones con altos requisitos de conformación
EP2653579B1 (fr) * 2012-04-17 2014-10-15 Georg Fischer Druckguss GmbH & Co. KG Alliage d'aluminium
PL2657360T3 (pl) * 2012-04-26 2014-09-30 Audi Ag Stop na bazie Al-Si odlewany pod ciśnieniem, zawierający zwłaszcza aluminium wtórne
EP2735621B1 (fr) * 2012-11-21 2015-08-12 Georg Fischer Druckguss GmbH & Co. KG Alliage à coulée sous pression en aluminium
FR3044326B1 (fr) * 2015-12-01 2017-12-01 Constellium Neuf-Brisach Tole mince a haute rigidite pour carrosserie automobile
CN109811206B (zh) * 2019-03-28 2021-07-16 帅翼驰新材料集团有限公司 铸造铝合金

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01283336A (ja) * 1988-05-11 1989-11-14 Honda Motor Co Ltd 鋳物用アルミニウム合金およびアルミニウム合金鋳物品の製造方法
EP2138593A2 (fr) * 2008-06-24 2009-12-30 BDW technologies GmbH Pièce coulée et son procédé de fabrication
EP3176275A1 (fr) 2015-12-03 2017-06-07 Audi Ag Alliage de coulée sous pression de silicium/aluminium. procédé de fabrication d'un composant coulé sous pression en alliage et composants de carrosserie comprenant un tel composant coulé sous pression
CN106244957A (zh) * 2016-03-24 2016-12-21 上海汇众汽车制造有限公司 AlSi7Mg铝合金铸件的热处理工艺

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SCHNEIDER W ET AL: "WAERMEBEHANDLUNG VON ALUMINIUM-GUSSLEGIERUNGEN FUER DAS VAKUUM- DRUCKGIESSEN. TEIL 4: ERGEBNISSE VON AUSLAGERUNGSVERSUCHEN", GIESSEREI,, vol. 83, no. 19, 30 September 1996 (1996-09-30), pages 23 - 27, XP000627093, ISSN: 0016-9765 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4186988A1 (fr) * 2021-11-26 2023-05-31 AMAG casting GmbH Procédé de durcissement d'une pièce de coulée en alliage d'aluminium et pièce de coulée ainsi fabriquée
WO2023099520A1 (fr) * 2021-12-03 2023-06-08 Audi Ag Alliage de coulée sous pression d'aluminium
DE102022115004A1 (de) 2022-04-22 2023-10-26 GM Global Technology Operations LLC Mehrzweckaluminiumlegierungszusammensetzung
DE102022122535A1 (de) 2022-09-06 2024-03-07 Thyssenkrupp Steel Europe Ag Verfahren zur Herstellung einer Aluminiumgussstruktur

Also Published As

Publication number Publication date
PL3825428T3 (pl) 2023-03-20
US20230008295A1 (en) 2023-01-12
MX2022006232A (es) 2022-10-27
HUE061156T2 (hu) 2023-05-28
CN115279931A (zh) 2022-11-01
WO2021105229A1 (fr) 2021-06-03
EP3825428B1 (fr) 2022-11-16
HUE061156T4 (hu) 2023-08-28

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