EP2226397A1 - Aluminium alloy - Google Patents

Aluminium alloy Download PDF

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Publication number
EP2226397A1
EP2226397A1 EP09405042A EP09405042A EP2226397A1 EP 2226397 A1 EP2226397 A1 EP 2226397A1 EP 09405042 A EP09405042 A EP 09405042A EP 09405042 A EP09405042 A EP 09405042A EP 2226397 A1 EP2226397 A1 EP 2226397A1
Authority
EP
European Patent Office
Prior art keywords
max
weight
alloy
aluminum alloy
thermal conductivity
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.)
Withdrawn
Application number
EP09405042A
Other languages
German (de)
French (fr)
Inventor
Peter Kohlmann
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.)
Rheinfelden Alloys GmbH and Co KG
Original Assignee
Rheinfelden Alloys GmbH and Co KG
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 Rheinfelden Alloys GmbH and Co KG filed Critical Rheinfelden Alloys GmbH and Co KG
Priority to EP09405042A priority Critical patent/EP2226397A1/en
Priority to JP2011552438A priority patent/JP2012519772A/en
Priority to EP10706641.7A priority patent/EP2403968B1/en
Priority to BRPI1013662A priority patent/BRPI1013662A2/en
Priority to CA2754383A priority patent/CA2754383C/en
Priority to US13/203,755 priority patent/US8480822B2/en
Priority to PCT/EP2010/052715 priority patent/WO2010100204A1/en
Priority to AU2010220308A priority patent/AU2010220308B2/en
Priority to KR1020117023129A priority patent/KR20120081553A/en
Priority to CN201080010815.8A priority patent/CN102341514B/en
Publication of EP2226397A1 publication Critical patent/EP2226397A1/en
Withdrawn legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/02—Casting exceedingly oxidisable non-ferrous metals, e.g. in inert atmosphere
    • B22D21/04—Casting aluminium or magnesium
    • 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
    • C22F1/04—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

Definitions

  • the invention relates to an aluminum alloy with good electrical conductivity and good thermal conductivity for the production of die-cast components.
  • the standard alloy LM 6 to BS 1490 (AC 47000, AlSi12 (Cu) is used as standard.
  • the invention has for its object to provide a suitable for die casting aluminum alloy with respect to the known from the prior art alloys of improved electrical conductivity and thermal conductivity.
  • the sum of the elements manganese, titanium, vanadium and chromium is ⁇ 0.02% by weight.
  • a preferred field of application of the aluminum alloy according to the invention is the production of components with good electrical conductivity and good thermal conductivity, for example heat sinks for electronic components, by die casting.
  • inventive alloy A and two comparative alloys B and C with the compositions given in Table 1 were cast starting from a melt temperature of 660 ° C in die casting at a mold temperature of 150 ° C to heat sinks for electronic components with a weight of 2.2 kg. After removal from the die, the samples were cooled in still air.
  • the comparative alloy B differs from the alloy A according to the invention essentially by an increased silicon content.
  • Table 3 the results of thermal conductivity measurements on the die-cast components made of the inventive alloy A and the Comparative Alloy C compiled.
  • the alloy A according to the invention exhibits 30 to 40% higher thermal conductivity than the comparative alloy C.
  • Table 1 chemical composition of the alloys in% by weight alloy Si Fe Cu mg Mn Cr tl V Sr A 8.66 0.60 0,006 0.001 0.005 0.001 0,008 0,006 0,012 B 9.40 0.63 0,008 0.001 0,006 0.001 0,008 0,008 0,008 C 10.0-13.0 0.6 0.1 12:10 0.5 - 0.2 - - alloy Mesastalle M1 [m / ⁇ mm 2 ] Measuring point M2 [m / ⁇ mm 2 ] A 26,06 24.48 B 24.35 23.09 C 22.08 21.21 alloy Number of measurements Temperature [° C] Sample thickness [mm] Thermal conductivity [W / mK] A 5 23 5.76 169.4 C 5 23

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Conductive Materials (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

The alloy contains the following elements, all expressed as percentage ranges or maximum percentages by weight. Si 8.0 - 9.0, Fe 0.5 - 0.7, Cu 0.01 max, Mg 0.010 max, Mn 0.010 max, Cr 0.001 max, Ti 0.20 max, V 0.020 max and Sr 0.010 - 0.030. The remainder is largely aluminum. Further elements and process impurities are present at up to 0.05 wt%. Their collective concentration is up to 0.2 wt%. The total content of elements Mn, Ti, V and Cr is up to 0.02 wt%.

Description

Die Erfindung betrifft eine Aluminiumlegierung mit guter elektrischer Leitfähigkeit und guter Wärmeleitfähigkeit zur Herstellung von Druckgussbauteilen.The invention relates to an aluminum alloy with good electrical conductivity and good thermal conductivity for the production of die-cast components.

Für im Druckgiessverfahren hergestellte Bauteile mit guter elektrischer Leitfähigkeit und guter Wärmeleitfähigkeit, wie zum Beispiel als Abdeckung der Elektronik in Automobilen eingesetzte Kühlkörper, wird standardmässig die genormte Legierung LM 6 nach BS 1490 (AC 47000, AlSi12(Cu)) verwendet.For die cast components with good electrical conductivity and good thermal conductivity, such as heatsinks used as a cover for electronics in automobiles, the standard alloy LM 6 to BS 1490 (AC 47000, AlSi12 (Cu)) is used as standard.

Der Erfindung liegt die Aufgabe zugrunde, eine für den Druckguss geeignete Aluminiumlegierung mit gegenüber den aus dem Stand der Technik bekannten Legierungen verbesserter elektrischer Leitfähigkeit und Wärmeleitfähigkeit bereitzustellen.The invention has for its object to provide a suitable for die casting aluminum alloy with respect to the known from the prior art alloys of improved electrical conductivity and thermal conductivity.

Zur erfindungsgemässen Lösung der Aufgabe führt, dass die Legierung

  • 8,0 bis 9,0 Gew.-% Silizium
  • 0,5 bis 0,7 Gew.-% Eisen
  • max. 0,010 Gew.-% Kupfer
  • max. 0,010 Gew.-% Magnesium
  • max. 0,010 Gew.-% Mangan
  • max. 0,001 Gew.-% Chrom
  • max. 0,020 Gew.-% Titan
  • max. 0,020 Gew.-% Vanadium
  • max. 0,05 Gew.-% Zink
  • 0,010 bis 0,030 Gew.-% Strontium
und Aluminium als Rest mit weitere Elementen und herstellungsbedingten Verunreinigungen einzeln max. 0,05 Gew.-%, insgesamt max. 0,2 Gew.-% enthält.To the inventive solution of the problem leads that the alloy
  • 8.0 to 9.0 wt .-% silicon
  • 0.5 to 0.7% by weight of iron
  • Max. 0.010% by weight of copper
  • Max. 0.010% by weight of magnesium
  • Max. 0.010% by weight of manganese
  • Max. 0.001% by weight of chromium
  • Max. 0.020 wt% titanium
  • Max. 0.020 wt% vanadium
  • Max. 0.05% by weight of zinc
  • 0.010 to 0.030 wt% strontium
and aluminum as a remainder with further elements and production-related impurities individually max. 0.05% by weight, in total max. Contains 0.2 wt .-%.

Bei einer bevorzugten Variante der erfindungsgemässen Legierung beträgt die Summe der Elemente Mangan, Titan, Vanadium und Chrom ≤ 0,02 Gew.-%.In a preferred variant of the alloy according to the invention, the sum of the elements manganese, titanium, vanadium and chromium is ≦ 0.02% by weight.

Ein bevorzugter Anwendungsbereich der erfindungsgemässen Aluminiumlegierung ist die Herstellung von Bauteilen mit guter elektrischer Leitfähigkeit und guter Wärmeleitfähigkeit, beispielsweise Kühlkörper für elektronische Bauteile, im Druckgiessverfahren.A preferred field of application of the aluminum alloy according to the invention is the production of components with good electrical conductivity and good thermal conductivity, for example heat sinks for electronic components, by die casting.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispiels sowie anhand von zwei Vergleichsbeispielen.Further advantages, features and details of the invention will become apparent from the following description of a preferred embodiment and based on two comparative examples.

Die erfindungsgemässe Legierung A und zwei Vergleichslegierungen B und C mit den in Tabelle 1 angegebenen Zusammensetzungen wurden ausgehend von einer Schmelzetemperatur von 660°C im Druckgiessverfahren bei einer Formtemperatur von 150°C zu Kühlkörpern für elektronische Bauteile mit einem Gewicht von 2,2 kg vergossen. Nach der Entnahme aus der Druckgiessform wurden die Proben in ruhiger Luft abgekühlt.The inventive alloy A and two comparative alloys B and C with the compositions given in Table 1 were cast starting from a melt temperature of 660 ° C in die casting at a mold temperature of 150 ° C to heat sinks for electronic components with a weight of 2.2 kg. After removal from the die, the samples were cooled in still air.

An den Druckgussbauteilen wurde an zwei verschiedenen Messstellen M1 und M2 die elektrische Leitfähigkeit gemessen. Die in Tabelle 2 zusammengestellten Ergebnisse zeigen die Überlegenheit der erfindungsgemässen Legierung A gegenüber den Vergleichslegierungen B und der registrierten Standardlegierung C (LM6 nach BS 1490, AC 47000, AlSi12(Cu)). Die Vergleichslegierung B unterscheidet sich von der erfindungsgemässen Legierung A im Wesentlichen durch einen erhöhten Siliziumgehalt.On the die cast components, the electrical conductivity was measured at two different measuring points M1 and M2. The results summarized in Table 2 show the superiority of the inventive alloy A over the comparative alloys B and the registered standard alloy C (LM6 to BS 1490, AC 47000, AlSi12 (Cu)). The comparative alloy B differs from the alloy A according to the invention essentially by an increased silicon content.

In Tabelle 3 sind die Ergebnisse von Wärmeleitfähigkeitsmessungen an den Druckgussbauteilen aus der erfindungsgemässen Legierung A und der Vergleichslegierung C zusammengestellt. Die etfindungsgemässe Legierung A zeigt gegenüber der Vergleichslegierung C eine um 30 bis 40% höhere Wärmleitfähigkeit. Tabelle 1: chemische Zusammensetzung der Legierungen in Gew.-% Legierung Si Fe Cu Mg Mn Cr Tl V Sr A 8,66 0,60 0,006 0,001 0,005 0,001 0,008 0,006 0,012 B 9,40 0,63 0,008 0,001 0,006 0,001 0,008 0,008 0,008 C 10.0-13.0 0,6 0,1 0.10 0.5 - 0.2 - - Tabelle 2: Elektrische Leitfähigkeit Legierung Mesastalle M1 [m/Ωmm2] Messstelle M2 [m/Ωmm2] A 26,06 24,48 B 24,35 23,09 C 22,08 21,21 Tabelle 3: Wärmeleitfähigkeit Legierung Anzahl Messungen Temperatur [°C] Probendicke [mm] Wärmeleitfähigkeit [W/mK] A 5 23 5,76 169,4 C 5 23 3,96 119,1 In Table 3, the results of thermal conductivity measurements on the die-cast components made of the inventive alloy A and the Comparative Alloy C compiled. The alloy A according to the invention exhibits 30 to 40% higher thermal conductivity than the comparative alloy C. Table 1: chemical composition of the alloys in% by weight alloy Si Fe Cu mg Mn Cr tl V Sr A 8.66 0.60 0,006 0.001 0.005 0.001 0,008 0,006 0,012 B 9.40 0.63 0,008 0.001 0,006 0.001 0,008 0,008 0,008 C 10.0-13.0 0.6 0.1 12:10 0.5 - 0.2 - - alloy Mesastalle M1 [m / Ω mm 2 ] Measuring point M2 [m / Ω mm 2 ] A 26,06 24.48 B 24.35 23.09 C 22.08 21.21 alloy Number of measurements Temperature [° C] Sample thickness [mm] Thermal conductivity [W / mK] A 5 23 5.76 169.4 C 5 23 3.96 119.1

Claims (4)

Aluminiumlegierung mit guter elektrischer Leitfähigkeit und guter Wärmeleitfähigkeit zur Herstellung von Druckgussbauteilen, dadurch gekennzeichnet, dass die Legierung 8,0 bis 9,0 Gew.-% Silizium 0,5 bis 0,7 Gew.-% Eisen max. 0,010 Gew.-% Kupfer max. 0,010 Gew.-% Magnesium max. 0,010 Gew.-% Mangan max, 0,001 Gew.-% Chrom max. 0,020 Gew.-% Titan max. 0,020 Gew.-% Vanadium 0,010 bis 0,030 Gew.-% Strontium und Aluminium als Rest mit weitere Elementen und herstellungsbedingten Verunreinigungen einzeln max. 0,05 Gew.-%, insgesamt max. 0,2 Gew.-% enthält.Aluminum alloy with good electrical conductivity and good thermal conductivity for the production of die-cast components, characterized in that the alloy 8.0 to 9.0 wt .-% silicon 0.5 to 0.7% by weight of iron Max. 0.010% by weight of copper Max. 0.010% by weight of magnesium Max. 0.010% by weight of manganese max, 0.001 wt% chromium Max. 0.020 wt% titanium Max. 0.020 wt% vanadium 0.010 to 0.030 wt% strontium and aluminum as a remainder with further elements and production-related impurities individually max. 0.05% by weight, in total max. Contains 0.2 wt .-%. Aluminiumlegierung nach Anspruch 1, dadurch gekennzeichnet, dass die Summe der Elemente Mangan, Titan, Vanadium und Chrom ≤ 0,02 Gew.-% beträgt.Aluminum alloy according to claim 1, characterized in that the sum of the elements manganese, titanium, vanadium and chromium ≤ 0.02 wt .-% is. Verwendung einer Aluminiumlegierung nach Anspruch 1 oder 2 für im Druckgiessverfahren hergestellte Bauteile mit guter elektrischer Leitfähigkeit und guter Wärmeleitfähigkeit, insbesondere Kühlkörper für elektronische Bauteile.Use of an aluminum alloy according to claim 1 or 2 for components produced by die casting with good electrical conductivity and good thermal conductivity, in particular heat sinks for electronic components. Druckgussbauteil aus einer Aluminiumlegierung mit guter Warmfestigkeit nach einem der Ansprüche 1 bis 3 mit guter elektrischer Leitfähigkeit und guter Wärmeleitfähigkeit.Die casting component made of an aluminum alloy with good heat resistance according to one of claims 1 to 3 with good electrical conductivity and good thermal conductivity.
EP09405042A 2009-03-06 2009-03-06 Aluminium alloy Withdrawn EP2226397A1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
EP09405042A EP2226397A1 (en) 2009-03-06 2009-03-06 Aluminium alloy
JP2011552438A JP2012519772A (en) 2009-03-06 2010-03-03 Aluminum alloy
EP10706641.7A EP2403968B1 (en) 2009-03-06 2010-03-03 Aluminium alloy
BRPI1013662A BRPI1013662A2 (en) 2009-03-06 2010-03-03 aluminum alloy
CA2754383A CA2754383C (en) 2009-03-06 2010-03-03 Aluminum alloy
US13/203,755 US8480822B2 (en) 2009-03-06 2010-03-03 Aluminum alloy
PCT/EP2010/052715 WO2010100204A1 (en) 2009-03-06 2010-03-03 Aluminum alloy
AU2010220308A AU2010220308B2 (en) 2009-03-06 2010-03-03 Aluminum alloy
KR1020117023129A KR20120081553A (en) 2009-03-06 2010-03-03 Aluminum alloy
CN201080010815.8A CN102341514B (en) 2009-03-06 2010-03-03 Aluminum alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09405042A EP2226397A1 (en) 2009-03-06 2009-03-06 Aluminium alloy

Publications (1)

Publication Number Publication Date
EP2226397A1 true EP2226397A1 (en) 2010-09-08

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ID=40689383

Family Applications (2)

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EP09405042A Withdrawn EP2226397A1 (en) 2009-03-06 2009-03-06 Aluminium alloy
EP10706641.7A Active EP2403968B1 (en) 2009-03-06 2010-03-03 Aluminium alloy

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP10706641.7A Active EP2403968B1 (en) 2009-03-06 2010-03-03 Aluminium alloy

Country Status (9)

Country Link
US (1) US8480822B2 (en)
EP (2) EP2226397A1 (en)
JP (1) JP2012519772A (en)
KR (1) KR20120081553A (en)
CN (1) CN102341514B (en)
AU (1) AU2010220308B2 (en)
BR (1) BRPI1013662A2 (en)
CA (1) CA2754383C (en)
WO (1) WO2010100204A1 (en)

Cited By (1)

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CN112662921A (en) * 2020-12-04 2021-04-16 成都慧腾创智信息科技有限公司 High-strength and high-toughness die-casting aluminum-silicon alloy and preparation method thereof

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CN102796921B (en) * 2012-08-17 2014-07-02 安徽和电普华电气有限公司 Aluminum alloy conductor used for cables and its preparation method
KR101606525B1 (en) 2014-10-29 2016-03-25 주식회사 케이엠더블유 Aluminum alloy for die casting having excellent corrosion resistance
CN104388770A (en) * 2014-11-19 2015-03-04 无锡鸿声铝业有限公司 Aluminum alloy
CN104532076A (en) * 2014-11-19 2015-04-22 无锡鸿声铝业有限公司 Aluminum alloy
CN104532036B (en) * 2015-01-29 2016-06-29 吉泽升 A kind of preparation method adopting automobile waste aluminum component regeneration extrusion casint dedicated aluminium alloy
EP3334850A4 (en) 2015-08-13 2019-03-13 Alcoa USA Corp. Improved 3xx aluminum casting alloys, and methods for making the same
CN105568077B (en) * 2015-12-28 2018-09-21 新疆众和股份有限公司 A kind of welding al-si eutectic alloy bar and its preparation process
CN109576539B (en) * 2018-12-14 2020-06-09 珠海市润星泰电器有限公司 High-conductivity aluminum alloy and preparation method thereof
CN109652686B (en) * 2018-12-14 2020-05-26 珠海市润星泰电器有限公司 High thermal conductivity aluminum alloy and preparation method thereof
CN109706355A (en) * 2019-03-12 2019-05-03 苏州春兴精工股份有限公司 A kind of high thermal conductivity die-cast aluminum alloy material and preparation method thereof
CN110541094A (en) * 2019-09-30 2019-12-06 中信戴卡股份有限公司 Die-casting aluminum alloy and automobile part
CN115917024A (en) * 2020-06-01 2023-04-04 美铝美国公司 Al-Si-Fe casting alloy
CN113817938B (en) * 2020-06-18 2023-01-06 比亚迪股份有限公司 Aluminum alloy and preparation method and application thereof
CN113215452A (en) * 2021-04-01 2021-08-06 河北新立中有色金属集团有限公司 Al-Si-Fe alloy material and preparation method thereof
CN117187630A (en) * 2022-05-30 2023-12-08 中兴智能科技南京有限公司 High-heat-conductivity die-casting aluminum alloy product, preparation method thereof and radiator

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EP1331281A1 (en) * 2002-01-18 2003-07-30 Nissan Motor Company, Limited Aluminum alloy for die casting, die casting method using same alloy, and die casting product by same method
US20050163647A1 (en) * 2003-05-02 2005-07-28 Donahue Raymond J. Aluminum-silicon alloy having reduced microporosity

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CN112662921B (en) * 2020-12-04 2022-03-25 成都慧腾创智信息科技有限公司 High-strength and high-toughness die-casting aluminum-silicon alloy and preparation method thereof

Also Published As

Publication number Publication date
CN102341514A (en) 2012-02-01
KR20120081553A (en) 2012-07-19
US8480822B2 (en) 2013-07-09
EP2403968A1 (en) 2012-01-11
CA2754383A1 (en) 2010-09-10
JP2012519772A (en) 2012-08-30
WO2010100204A1 (en) 2010-09-10
EP2403968B1 (en) 2015-07-08
BRPI1013662A2 (en) 2016-04-26
CN102341514B (en) 2013-09-04
AU2010220308B2 (en) 2014-05-01
CA2754383C (en) 2018-04-10
AU2010220308A1 (en) 2011-10-13
US20120009081A1 (en) 2012-01-12

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