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Aluminum alloy casting and production method thereof
US9243312B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9243312-B2 |
| Application number | US-201013391445-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 27, 2010 |
| Priority date | Sep 10, 2009 |
| Publication date | Jan 26, 2016 |
| Grant date | Jan 26, 2016 |
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Abstract
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There is provided an aluminum alloy casting consisting essentially of 7.0 to 11.5 mass % of Si, 0.9 to 4.0 mass % of Mg, 0.1 to 0.65 mass % of Fe, 0.1 to 0.8 mass % of Mn and the balance being Al and unavoidable impurities, or consisting essentially of 7.0 to 11.5 mass % of Si, 0.9 to 4.0 mass % of Mg, 0.1 to 0.65 mass % of Fe, 0.1 to 0.8 mass % of Mn, 0.3 to 1.0 mass % of Cu and the balance being Al and unavoidable impurities, and containing eutectic Si grains having an aspect ratio of 2.0 or smaller and an average grain size of 1.0 micrometer or smaller. There is also provided an automotive part formed with the aluminum alloy casting and a production method of the aluminum alloy casting.
First claim
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The invention claimed is: 1. An aluminum alloy cast member consisting essentially of 7.0 to 11.5 mass % of Si, 0.9 to 4.0 mass % of Mg, 0.1 to 0.65 mass % of Fe, 0.1 to 0.8 mass % of Mn and the balance being Al and unavoidable impurities and containing eutectic Si grains having an aspect ratio of 2.0 or smaller and an average grain size of 1.0 micrometer or smaller. 2. An aluminum alloy cast member consisting essentially of 7.0 to 11.5 mass % of Si, 0.9 to 4.0 mass % of Mg, 0.1 to 0.65 mass % of Fe, 0.1 to 0.8 mass % of Mn, 0.3 to 1.0 mass % of Cu and the balance being Al and unavoidable impurities and containing eutectic Si grains having an aspect ratio of 2.0 or smaller and an average grain size of 1.0 micrometer or smaller. 3. An aluminum alloy cast member according to claim 1 , wherein the content of said Si is 8.0 to 10.0 mass %; and the content of said Mg is 1.0 to 4.0 mass %. 4. An automotive part comprising an aluminum alloy casting according to claim 1 . 5. A method of producing an aluminum alloy casting according to claim 1 , comprising: preparing a molten aluminum alloy consisting essentially of 7.0 to 11.5 mass % of Si, 0.9 to 4.0 mass % of Mg, 0.1 to 0.65 mass % of Fe, 0.1 to 0.8 mass % of Mn and the balance being Al and unavoidable impurities; and injecting the molten aluminum alloy into a casting mold to thereby cast the molten aluminum alloy under the condition that an average flow rate of the molten aluminum alloy in the casting mold is 12 m/s or higher. 6. An aluminum alloy cast member according to claim 2 , wherein the content of said Si is 8.0 to 10.0 mass %; and the content of said Mg is 1.0 to 4.0 mass %. 7. An automotive part comprising an aluminum alloy casting according to claim 2 . 8. A method of producing an aluminum alloy casting according to claim 2 , comprising: preparing a molten aluminum alloy consisting essentially of 7.0 to 11.5 mass % of Si, 0.9 to 4.0 mass % of Mg, 0.1 to 0.65 mass % of Fe, 0.1 to 0.8 mass % of Mn, 0.3 to 1.0 mass % of Cu and the balance being Al and unavoidable impurities; and injecting the molten aluminum alloy into a casting mold to thereby cast the molten aluminum alloy under the condition that an average flow rate of the molten aluminum alloy in the casting mold is 12 m/s or higher.
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Inventors
Classifications
with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C · CPC title
Modified aluminium-silicon alloys · CPC title
- C22C21/02Primary
with silicon as the next major constituent · CPC title
Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure · CPC title
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- What does patent US9243312B2 cover?
- There is provided an aluminum alloy casting consisting essentially of 7.0 to 11.5 mass % of Si, 0.9 to 4.0 mass % of Mg, 0.1 to 0.65 mass % of Fe, 0.1 to 0.8 mass % of Mn and the balance being Al and unavoidable impurities, or consisting essentially of 7.0 to 11.5 mass % of Si, 0.9 to 4.0 mass % of Mg, 0.1 to 0.65 mass % of Fe, 0.1 to 0.8 mass % of Mn, 0.3 to 1.0 mass % of Cu and the balance be…
- Who is the assignee on this patent?
- Nagaishi Yusuke, Nakagawa Shigeyuki, Itakura Koji, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification C22C21/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 26 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).