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Aluminum alloy and manufacturing method thereof

a technology of aluminum alloy and manufacturing method, which is applied in the field of aluminum alloy, can solve the problems of low tensile strength of alloys, crack generation, and difficulty in simultaneously improving tensile strength and elongation, and achieves the effects of improving casting properties, high strength and elongation, and efficient production of aluminum alloys

Inactive Publication Date: 2021-10-28
IL KWANG METAL WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

This patent is about improving the strength and elongation of aluminum alloy. The invention can lead to quieter and more stable automobile parts. The alloy has higher strength and elongation compared to existing aluminum alloy. The production process is also more efficient.

Problems solved by technology

Generally, there is a problem that is difficult to simultaneously improve the tensile strength and the elongation because there is trade-off relationship in which one of the characteristics of the tensile strength and the elongation is attenuated when the other is improved.
Generally, although an aluminum-silicon (Al—Si) alloy and an aluminum-magnesium alloy having excellent castability have been used for cast aluminum alloys, there is a weakness that these alloys have low tensile strength.
There is a problem that cracks are generated during casting, while the aluminum alloy for plastic processing has excellent plastic processibility.

Method used

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  • Aluminum alloy and manufacturing method thereof
  • Aluminum alloy and manufacturing method thereof
  • Aluminum alloy and manufacturing method thereof

Examples

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experimental example

[0065]Hereinafter, the present invention will be described in more detail with reference to specific production examples, comparative examples and their property evaluation results of the present invention.

[0066]Table 1 shows contents of experimental examples and comparative examples of the aluminum alloy according to the present invention.

[0067]The aluminum alloy of the present invention, having the content of each element in Table 1 was cast by a compact 50 Kg electric furnace melting and high-frequency induction melting. All alloys were cast using a 99.9% pure raw material and master alloy. Using an electric furnace, 5 kg of each specimen was melted and temperature was maintained at 700° C. After complete melting, a degassing operation was performed with Ar gas for 10 minutes. After molten state was maintained for 10 minutes, it was filled into a sand mold.

[0068]In five minutes after filling, the ingot was taken out of the mold. Homogenization treatment was carried out at 450° C....

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Abstract

According to the present invention, an aluminum alloy comprises 18 to 50 parts by weight of Zinc (Zn), 0.05 to 5 parts by weight of Copper (Cu), 0.001 to 0.3 parts by weight of crystal micronization elements which are at least one of vanadium (V), zirconium (Zr), titanium (Ti) and Boron (B), the rest being aluminum (Al) and other unavoidable impurities, based on the total weight of the alloy.

Description

TECHNICAL FIELD[0001]The present invention is related to an aluminum alloy and a manufacturing method thereof, and more specifically, to an aluminum alloy having excellent strength and elongation and a manufacturing method thereof.BACKGROUND[0002]An aluminum alloy has been used as a structural material because it is a lightweight alloy and has excellent corrosion resistance and thermal conductivity. Since aluminum has a low mechanical property, an aluminum alloy including one or more of metals such as zinc, copper, silicon, magnesium, nickel, and cobalt is widely used in various industrial fields. An aluminum alloy is widely used as a structural material such as an interior / exterior material particularly such as automobiles, ships, aircraft, etc. The aluminum-zinc (Al—Zn) alloy has been used to improve aluminum hardness, usually containing 10 to 14 wt % of zinc based on the total weight of the alloy.[0003]In order to be used as a structural material for automobiles, ships, aircraft,...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C22C21/10C22C1/02C21D9/00
CPCC22C21/10C21D9/00C22C1/026C22F1/053
Inventor KIM, JONG DUKKIM, MU HA
Owner IL KWANG METAL WORKS
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