High-thermal-conductivity cast aluminum alloy

Abstract

The invention discloses a high-thermal-conductivity cast aluminum alloy. The aluminum alloy comprises the following components in percentage by weight: 10%-12% of silicon, 0.1%-1% of copper, 0.3%-1% of iron, 0.1%-0.6% of manganese, 0.2%-0.6% of magnesian and the balance aluminum, wherein impurity metals with a total amount of less than 0.2% are further allowed to exist in the alloy. The aluminum alloy is excellent in casting performance and thermal conduction characteristic, and the thermal conductivity can reach 140W / m.K and above.

Description

Technical field: [0001] The invention relates to the field of alloys, in particular to a cast aluminum alloy with high thermal conductivity. Background technique: [0002] Aluminum alloy has good processing performance, especially hypoeutectic aluminum-silicon alloy, which not only has good processing performance, but also has light specific gravity, beautiful surface and corrosion resistance, good casting performance, good comprehensive mechanical properties of products, and the strength can be greatly improved after heat treatment. Excellent cast aluminum alloys can be used for various parts with complex shapes and are widely used in many fields. As electronic products become thinner, lighter and more functional, the requirements for heat dissipation are increased. Therefore, cast aluminum alloys with high thermal conductivity have important application prospects. [0003] Since electronic products usually require complex and precise structural parts, die-casting alloys h...

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Problems solved by technology

However, the thermal conductivity of this alloy is low, only 90W / m·K, which cannot meet the heat dissipation requirements of existing electronic products

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