Scandium-containing oxidable die-casting aluminium alloy, preparation method and structural part

A technology for casting aluminum alloys and structural parts, which is applied in the field of aluminum alloys, and can solve problems such as limited application, failure to meet the requirements of mechanical properties of thin-walled parts, and inability to realize oxidation of other colors.

Active Publication Date: 2014-12-17
GUANGDONG JANUS SMART GRP CO LTD +1
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Problems solved by technology

[0005] 1. If it is optimized for the Al-Si series, it is hoped to solve the problem of anodic oxidation of this series of alloys, but it has been proved that in addition to black anodic oxidation, other color oxidations are still not possible, which is a problem for shells that require a decorative appearance , the a...

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  • Scandium-containing oxidable die-casting aluminium alloy, preparation method and structural part
  • Scandium-containing oxidable die-casting aluminium alloy, preparation method and structural part

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Embodiment Construction

[0021] Embodiments of the present invention will be described in detail below. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0022] According to an embodiment of the present invention, a scandium-containing oxidizable die-casting aluminum alloy comprises 1% to 2% of Mn, 1% to 2% of Ni, 1% to 3% of Zn, 0.8% to 2% of Mg, 0.05 %-0.3% Sc, 0.05%-0.2% Zr, and 90%-95% Al. The content of other individual impurities is less than 0.5%. Zn, Mg, Ni, Mn, Sc, and Zr elements are added as aluminum alloy elements at the same time, and formulated according to the above ratio, the prepared alloy can simultaneously realize the comprehensive properties of high strength, anodic oxidation, and die-casting. Zn and Mg are strengthening elements in the alloy composition, mainly forming MgZn2, which can improve the strength of the aluminum alloy. The hot cracking tendency that Zn and Mg exist easil...

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Abstract

The invention discloses a scandium-containing oxidable die-casting aluminium alloy and a preparation method thereof. The aluminium alloy comprises the following components by mass: 1-2 percent of Mn, 1-2 percent of Ni, 1-3 percent of Zn, 0.8-2 percent of Mg, 0.05-0.3 percent of Sc, 0.05-0.2 percent of Zr, 90-95 percent of Al and less than 0.15 percent of Fe and Si impurities. The invention further discloses a structural part containing the aluminium alloy. The aluminium alloy provided by the invention has the advantages of high strength, good anodic oxidation property and good die-casting property, and can be used for manufacturing thin-walled casing members meeting high appearance and performance requirements.

Description

technical field [0001] The invention relates to an aluminum alloy, in particular to a scandium-containing oxidizable die-casting aluminum alloy, a preparation method and a structural part containing the aluminum alloy. Background technique [0002] Traditional die-casting aluminum alloys are mainly Al-Si, Al-Mg, Al-Zn and other series alloys. Al-Si series alloys have the best fluidity because of their high Si content, so they are the most widely used, but due to Silicon has an adverse effect on anodic oxidation, which makes it more limited in the application of appearance parts. [0003] Al-Mg series alloys can be anodized, but Mg is easy to cause hot brittle castings and poor fluidity, which is not conducive to die-casting of thin-walled parts. The Al-Zn system has high strength, but it also has a tendency to hot cracking, and its casting performance is not good. [0004] In response to the above problems, many research institutions have conducted research in the followin...

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Application Information

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IPC IPC(8): C22C21/00C22C21/10C22C1/03
Inventor 范曦王长明谢守德
Owner GUANGDONG JANUS SMART GRP CO LTD
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