EP2403968A1 - Aluminiumlegierung - Google Patents

Aluminiumlegierung

Info

Publication number
EP2403968A1
EP2403968A1 EP10706641A EP10706641A EP2403968A1 EP 2403968 A1 EP2403968 A1 EP 2403968A1 EP 10706641 A EP10706641 A EP 10706641A EP 10706641 A EP10706641 A EP 10706641A EP 2403968 A1 EP2403968 A1 EP 2403968A1
Authority
EP
European Patent Office
Prior art keywords
max
weight
aluminum alloy
thermal conductivity
alloy
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
EP10706641A
Other languages
English (en)
French (fr)
Other versions
EP2403968B1 (de
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 EP10706641.7A priority Critical patent/EP2403968B1/de
Publication of EP2403968A1 publication Critical patent/EP2403968A1/de
Application granted granted Critical
Publication of EP2403968B1 publication Critical patent/EP2403968B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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, AISiI 2 (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.
  • novel alloy A and two comparative alloys B and C with the compositions shown in Table 1 were cast starting from a melt temperature of 660 0 C in die casting at a mold temperature of 15O 0 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 1 chemical composition of the alloys in% by weight

Landscapes

  • 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

Eine Aluminiumlegierung mit guter elektrischer Leitfähigkeit und guter Wärmeleitfähigkeit zur Herstellung von Druckgussbauteilen enthält: 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.-%. Die Legierung eignet sich insbesondere zur Herstellung von Bauteilen mit guter elektrischer Leitfähigkeit und guter Wärmeleitfähigkeit im Druckgiessverfahren.

Description

Aluminiumlegierung
Die Erfindung betrifft eine Aluminiumlegierung mit guter elektrischer Leitfähigkeit und guter Wärmeleitfähigkeit zur Herstellung von Druckgussbauteilen.
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, AISiI 2(Cu)) verwendet.
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.
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 Ver¬ unreinigungen einzeln max. 0,05 Gew.-%, insgesamt max. 0,2 Gew.-% enthält.
Bei einer bevorzugten Variante der erfind ungsgemässen Legierung beträgt die Summe der Elemente Mangan, Titan, Vanadium und Chrom < 0,02 Gew.-%.
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.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispiels sowie anhand von zwei Vergleichsbeispielen.
Die erfindungsgemässe Legierung A und zwei Vergleichslegierungen B und C mit den in Tabelle 1 angegebenen Zusammensetzungen wurden ausgehend von einer Schmelzetemperatur von 6600C im Druckgiessverfahren bei einer Formtemperatur von 15O0C 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.
An den Druckgussbauteilen wurde an zwei verschiedenen Messstellen M1 und M2 die elektrische Leitfähigkeit gemessen. Die in Tabelle 2 zusammengestell- ten Ergebnisse zeigen die Überlegenheit der erfindungsgemässen Legierung A gegenüber den Vergleichslegierungen B und der registrierten Standardlegierung C (LM6 nach BS 1490, AC 47000, AISiI 2(Cu)). Die Vergleichslegierung B unterscheidet sich von der erfindungsgemässen Legierung A im Wesentlichen durch einen erhöhten Siliziumgehalt.
In Tabelle 3 sind die Ergebnisse von Wärmeleitfähigkeitsmessungen an den Druckgussbauteilen aus der erfindungsgemässen Legierung A und der Vergleichslegierung C zusammengestellt. Die erfind ungsgemässe Legierung A zeigt gegenüber der Vergleichslegierung C eine um 30 bis 40% höhere Wärmleitfähigkeit.
Tabelle 1 : chemische Zusammensetzung der Legierungen in Gew.-%
Tabelle 2: Elektrische Leitfähigkeit
Tabelle 3: Wärmeleitfähigkeit

Claims

Patentansprüche
1. Aluminiumlegierung mit guter elektrischer Leitfähigkeit und guter Wärmeleitfähigkeit zur Herstellung von Druckgussbauteilen, dadurch ge¬ kennzeichnet, 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.
2. Aluminiumlegierung nach Anspruch 1, dadurch gekennzeichnet, dass die Summe der Elemente Mangan, Titan, Vanadium und Chrom < 0,02 Gew.-% beträgt.
3. 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.
4. Druckgussbauteil aus einer Aluminiumlegierung mit guter Warmfestigkeit nach einem der Ansprüche 1 bis 3 mit guter elektrischer Leitfähigkeit und guter Wärmeleitfähigkeit.
EP10706641.7A 2009-03-06 2010-03-03 Aluminiumlegierung Active EP2403968B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10706641.7A EP2403968B1 (de) 2009-03-06 2010-03-03 Aluminiumlegierung

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP09405042A EP2226397A1 (de) 2009-03-06 2009-03-06 Aluminiumlegierung
EP10706641.7A EP2403968B1 (de) 2009-03-06 2010-03-03 Aluminiumlegierung
PCT/EP2010/052715 WO2010100204A1 (de) 2009-03-06 2010-03-03 Aluminiumlegierung

Publications (2)

Publication Number Publication Date
EP2403968A1 true EP2403968A1 (de) 2012-01-11
EP2403968B1 EP2403968B1 (de) 2015-07-08

Family

ID=40689383

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09405042A Withdrawn EP2226397A1 (de) 2009-03-06 2009-03-06 Aluminiumlegierung
EP10706641.7A Active EP2403968B1 (de) 2009-03-06 2010-03-03 Aluminiumlegierung

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP09405042A Withdrawn EP2226397A1 (de) 2009-03-06 2009-03-06 Aluminiumlegierung

Country Status (9)

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

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102796921B (zh) * 2012-08-17 2014-07-02 安徽和电普华电气有限公司 一种电缆用铝合金导体及其制备方法
KR101606525B1 (ko) 2014-10-29 2016-03-25 주식회사 케이엠더블유 내식성이 개선된 다이캐스팅용 알루미늄 합금
CN104388770A (zh) * 2014-11-19 2015-03-04 无锡鸿声铝业有限公司 一种铝合金
CN104532076A (zh) * 2014-11-19 2015-04-22 无锡鸿声铝业有限公司 一种铝合金
CN104532036B (zh) * 2015-01-29 2016-06-29 吉泽升 一种采用汽车废铝件再生挤压铸造专用铝合金的制备方法
CN107923004B (zh) 2015-08-13 2021-12-14 美铝美国公司 改善的3xx铝铸造合金及其制备方法
CN105568077B (zh) * 2015-12-28 2018-09-21 新疆众和股份有限公司 一种焊接用铝硅共晶合金杆及其制备工艺
CN109576539B (zh) * 2018-12-14 2020-06-09 珠海市润星泰电器有限公司 高电导率铝合金及其制备方法
CN109652686B (zh) * 2018-12-14 2020-05-26 珠海市润星泰电器有限公司 高导热率铝合金及其制备方法
CN109706355A (zh) * 2019-03-12 2019-05-03 苏州春兴精工股份有限公司 一种高导热压铸铝合金材料及其制备方法
CN110541094A (zh) * 2019-09-30 2019-12-06 中信戴卡股份有限公司 一种压铸铝合金及车用部件
WO2021247373A1 (en) * 2020-06-01 2021-12-09 Alcoa Usa Corp. Al-si-fe casting alloys
CN113817938B (zh) * 2020-06-18 2023-01-06 比亚迪股份有限公司 一种铝合金及其制备方法、应用
CN112662921B (zh) * 2020-12-04 2022-03-25 成都慧腾创智信息科技有限公司 一种高强韧压铸铝硅合金及其制备方法
CN113215452A (zh) * 2021-04-01 2021-08-06 河北新立中有色金属集团有限公司 一种Al-Si-Fe系合金材料及其制备方法
CN117187630A (zh) * 2022-05-30 2023-12-08 中兴智能科技南京有限公司 高导热压铸铝合金产品及其制备方法、散热器

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CH689143A5 (de) * 1994-06-16 1998-10-30 Rheinfelden Aluminium Gmbh Aluminium-Silizium Druckgusslegierung mit hoher Korrosionsbestaendigkeit, insbesondere fuer Sicherheitsbauteile.
JP2002105571A (ja) * 2000-10-03 2002-04-10 Ryoka Macs Corp 熱伝導性に優れたヒートシンク用アルミニウム合金材
JP4007488B2 (ja) * 2002-01-18 2007-11-14 日本軽金属株式会社 ダイカスト用アルミニウム合金、ダイカスト製品の製造方法およびダイカスト製品
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Also Published As

Publication number Publication date
WO2010100204A1 (de) 2010-09-10
CN102341514A (zh) 2012-02-01
JP2012519772A (ja) 2012-08-30
EP2226397A1 (de) 2010-09-08
EP2403968B1 (de) 2015-07-08
US8480822B2 (en) 2013-07-09
CA2754383A1 (en) 2010-09-10
AU2010220308A1 (en) 2011-10-13
CA2754383C (en) 2018-04-10
KR20120081553A (ko) 2012-07-19
CN102341514B (zh) 2013-09-04
US20120009081A1 (en) 2012-01-12
BRPI1013662A2 (pt) 2016-04-26
AU2010220308B2 (en) 2014-05-01

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