EP2425030A1 - Aluminium-silizium-druckgusslegierung für dünnwandige strukturbauteile - Google Patents
Aluminium-silizium-druckgusslegierung für dünnwandige strukturbauteileInfo
- Publication number
- EP2425030A1 EP2425030A1 EP10716768A EP10716768A EP2425030A1 EP 2425030 A1 EP2425030 A1 EP 2425030A1 EP 10716768 A EP10716768 A EP 10716768A EP 10716768 A EP10716768 A EP 10716768A EP 2425030 A1 EP2425030 A1 EP 2425030A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- silicon
- content
- aluminum
- thin
- max
- 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
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
Definitions
- the component function also includes corrosion resistance in automotive production.
- these requirements are difficult to meet, as it comes in particular in thin-walled components due to segregations again and again to inhomogeneities that affect the corrosion resistance.
- the AlSiIOMnMg alloy is currently the most widely used Die casting alloy for bodywork applications. Parts of this alloy must be subjected to a heat treatment due to the chemical composition, for example a heat treatment according to T6 or T7. The heat treatment process causes dimensional distortions on the component, which must be compensated for by additional process steps.
- the object of the present invention is therefore to avoid the disadvantages described and to provide an aluminum-silicon diecasting alloy for thin-walled structural components with improved flow properties, improved solidification behavior, optimum ductility and significantly reduced tendency to heat cracks.
- the new structural component should also be corrosion-resistant and of high dimensional stability in critical areas both in the cast state and after a heat treatment has been carried out.
- the manganese content was limited to 0.4-0.71% and the magnesium content to 0.003-0.4%.
- the copper content was limited to 0.003-0.20%, whereby in the cast state already strength values Rm of more than 300 MPa could be achieved at an elongation of more than 10%. These values could also be achieved in critical areas of the structural components produced by die casting.
- Table 1 Measurements of strength and porosity
- Table 2 Explanations of the intermetallic phases
- Table 3 Measurement of viscosity and corrosion behavior
- FIG. 1 graph for measuring the strength as a function of the alloy ratio according to the invention
- FIG. 2 Graph for measuring the porosity as a function of the alloy ratio according to the invention
- FIG. 3 Graph for measuring the viscosity as a function of the alloy ratio according to the invention
- FIG. 4 graph for measuring corrosion resistance as a function of the invention
- the porosity values for the specimens were also determined as a function of the ratio Si / (Mg + Mn + Cu) and shown in FIG.
- a relatively small fluctuation range of +/- 0.20% within the claimed range can be recognized.
- porosity increased rapidly, due to the poorer flow properties of the comparative alloys tested.
- a higher magnesium or a higher copper content had a negative effect on the flow properties.
- the measurements of porosity were made microscopically on the specimens. The viscosity was measured with a rotary viscometer / rheometer.
- the viscosity was measured on the inventive alloys and the comparative - alloys at different temperatures (680 0 C 700 0 0 C and 72o C) was applied. Again, the curve shows a relatively favorable viscosity behavior within the range limit for the ratio Si / (Mg + Mn + Cu) according to the invention. At higher ratios (greater than 29) the viscosity deteriorated rapidly due to adverse ratios of the power elements. At ratios below 9, negative effects of the accompanying elements magnesium, manganese and copper were found. The viscosity is strongly influenced by the Si / (Mn + Mg + Cu) ratio. The alloying elements Si, Cu, Mn, Mg and accordingly the quantitative ratio of these elements dictates the strength of the cohesive forces of the material on which the viscosity is dependent.
- the weight losses were determined on the specimens per area, which were found after 30 days in formic acid at room temperature of 20 0 C in the pH range of 2.7 to 3.
- the corrosion resistance is strongly influenced by the ratio Si / (Mn + Mg + Cu). This is also due to the presence of intermetallic phases which accelerate the chemical reactivity between the formic acid and the Al alloy.
- the corrosion erosion in the alloy ratio Si / (Mg + Mn + Cu) according to the present invention was particularly low.
- the range above 29 is not interesting because of the Si primary crystallization for die casting applications (thin-walled parts) and found below 9 by the increased components of the alloy on the accompanying elements manganese and copper.
- the measured values are summarized in Table 3 in a clear form.
- Fluorescence analysis can be detected. Because in the case of Si / (Mn + Mg + Cu) ratios outside the stressed intervals decrease, the ductility of the material decreases dramatically (see picture mechanical properties), the potential risk of the formation of hot cracks is correspondingly greater.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Extrusion Of Metal (AREA)
- Conductive Materials (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200910019269 DE102009019269A1 (de) | 2009-04-28 | 2009-04-28 | Aluminium-Silizium-Druckgusslegierung für dünnwändige Strukturbauteile |
| PCT/EP2010/002561 WO2010124835A1 (de) | 2009-04-28 | 2010-04-27 | Aluminium-silizium-druckgusslegierung für dünnwandige strukturbauteile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2425030A1 true EP2425030A1 (de) | 2012-03-07 |
| EP2425030B1 EP2425030B1 (de) | 2013-11-27 |
Family
ID=42806013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10716768.6A Active EP2425030B1 (de) | 2009-04-28 | 2010-04-27 | Aluminium-silizium-druckgusslegierung für dünnwandige strukturbauteile |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2425030B1 (de) |
| DE (1) | DE102009019269A1 (de) |
| WO (1) | WO2010124835A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016096325A1 (de) * | 2014-12-18 | 2016-06-23 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum zerstörungsfreien ermitteln von werkstoffkennwerten |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ2012111A3 (cs) | 2012-02-16 | 2013-08-28 | Zentiva, K.S. | Zpusob prípravy rivaroxabanu zalozený na vyuzití (S)-epichlorhydrinu |
| US9771635B2 (en) | 2012-07-10 | 2017-09-26 | GM Global Technology Operations LLC | Cast aluminum alloy for structural components |
| GB2526085A (en) * | 2014-05-12 | 2015-11-18 | Jaguar Land Rover Ltd | An alloy |
| CN110714148A (zh) * | 2019-11-21 | 2020-01-21 | 珠海市润星泰电器有限公司 | 一种高性能半固态压铸铝合金及其制备方法 |
| DE102020100701A1 (de) | 2020-01-14 | 2021-07-15 | Audi Aktiengesellschaft | Verfahren zum Herstellen einer Kraftwagenfelge aus Aluminium oder einer Aluminiumlegierung für ein Rad eines Kraftfahrzeugs sowie entsprechende Kraftwagenfelge |
| CN112846127B (zh) * | 2020-12-30 | 2022-07-12 | 福建省金瑞高科有限公司 | 5g基站散热壳的压铸方法及其应用的半固态压铸方法 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3724928A1 (de) * | 1987-07-28 | 1989-02-16 | Bayerische Motoren Werke Ag | Herstell-verfahren fuer leichtmetallguss-bauteile, insbesondere leichtmetallguss-raeder fuer personenkraftwagen |
| CH689143A5 (de) * | 1994-06-16 | 1998-10-30 | Rheinfelden Aluminium Gmbh | Aluminium-Silizium Druckgusslegierung mit hoher Korrosionsbestaendigkeit, insbesondere fuer Sicherheitsbauteile. |
| DE29522065U1 (de) * | 1994-06-16 | 1999-09-02 | Aluminium Rheinfelden GmbH, 79618 Rheinfelden | Druckgußlegierung |
| FR2742165B1 (fr) * | 1995-12-12 | 1998-01-30 | Pechiney Rhenalu | Procede de fabrication de bandes minces en alliage d'aluminium a haute resistance et formabilite |
| AT404844B (de) * | 1997-03-03 | 1999-03-25 | Aluminium Lend Gmbh | Druckgusslegierung |
| EP0992601A1 (de) * | 1998-10-05 | 2000-04-12 | Alusuisse Technology & Management AG | Verfahren zur Herstellung eines Bauteiles aus einer Aluminiumlegierung durch Druckgiessen |
| DE19914090A1 (de) * | 1999-03-27 | 2000-04-27 | Daimler Chrysler Ag | Funktionsträger aus Aluminiumdruckguß |
| DE10002021C2 (de) * | 1999-09-24 | 2002-10-17 | Honsel Guss Gmbh | Verfahren zur Wärmebehandlung von Strukturgußteilen aus einer dafür zu verwendenden Aluminiumlegierung |
| JP2003510463A (ja) * | 1999-09-24 | 2003-03-18 | ホンゼル グス ゲゼルシャフト ミット ベシュレンクテル ハフツング | 使用すべきアルミニュウム合金からなる構造鋳造部品の熱処理方法 |
| 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 |
| US7666353B2 (en) * | 2003-05-02 | 2010-02-23 | Brunswick Corp | Aluminum-silicon alloy having reduced microporosity |
| JP2006183122A (ja) * | 2004-12-28 | 2006-07-13 | Denso Corp | ダイカスト用アルミニウム合金およびアルミニウム合金鋳物の製造方法 |
| EP1719820A3 (de) * | 2005-05-03 | 2006-12-27 | ALUMINIUM RHEINFELDEN GmbH | Aluminium-Gusslegierung |
| JP5076455B2 (ja) * | 2006-11-17 | 2012-11-21 | 日産自動車株式会社 | アルミニウム合金ダイカスト及びその製造方法 |
-
2009
- 2009-04-28 DE DE200910019269 patent/DE102009019269A1/de not_active Ceased
-
2010
- 2010-04-27 EP EP10716768.6A patent/EP2425030B1/de active Active
- 2010-04-27 WO PCT/EP2010/002561 patent/WO2010124835A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010124835A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016096325A1 (de) * | 2014-12-18 | 2016-06-23 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum zerstörungsfreien ermitteln von werkstoffkennwerten |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102009019269A1 (de) | 2010-11-11 |
| WO2010124835A1 (de) | 2010-11-04 |
| EP2425030B1 (de) | 2013-11-27 |
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