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Al-Mg high magnesium alloys for automobile body sheets and manufacturing method thereof

A high-magnesium aluminum alloy and automobile body plate technology, which is applied to aluminum alloys and their manufacturing, Al-Mg series high-magnesium aluminum alloys for automobile body plates and their manufacturing fields, can solve problems such as inability to match strength, and achieve good Economic benefits, prevention of strength reduction, good plasticity

Active Publication Date: 2010-11-10
ZHEJIANG GKO IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although Zhou Qingbo and others described the influence of chemical composition on the properties of 5083 aluminum alloy in Light Alloy Processing Technology, 2007, Vol. The role and its impact on the performance of aluminum alloys, the impact of impurities Fe, Si on the performance of aluminum alloys, but those skilled in the art can not match according to the content of this document, the strength is higher, the impact resistance is better, and it is not easy to appear after baking Soften and can be used as the chemical composition of aluminum alloys for automotive body panels

Method used

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  • Al-Mg high magnesium alloys for automobile body sheets and manufacturing method thereof
  • Al-Mg high magnesium alloys for automobile body sheets and manufacturing method thereof
  • Al-Mg high magnesium alloys for automobile body sheets and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] According to the mass percentage of Example 1 in Table 1, the ingredients were prepared to make aluminum ingots, master alloys AlCu50, AlMn10, AlCr4, AlBe3, AlZr4, Al-5Ti-B.

[0044] First put the aluminum ingot into the crucible resistance furnace, when the aluminum ingot is melted and the melt temperature is 720°C, add AlCu50, AlMn10, AlCr4, AlBe3, AlZr4 master alloys and stir; when the melt temperature reaches 710°C, add Mg and Zn , slag removal, and refining; when the temperature is 710°C, add Al-5Ti-B master alloy, stir and stand for 50 minutes, and cast into a cast iron mold with a temperature of 680°C;

[0045] Homogenize the aluminum alloy ingots formed by casting above, the temperature of the homogenization treatment is 450°C, the treatment time is 24 hours, hot rolling at a temperature of 450°C, intermediate annealing, the intermediate annealing temperature is 400°C, and the intermediate annealing The time is 40min, and water quenching is used for rapid coolin...

Embodiment 2

[0048] According to the mass percentage of Example 2 in Table 1, the ingredients were prepared to make aluminum ingots, master alloys AlCu50, AlMn10, AlCr4, AlBe3, AlZr4, Al-5Ti-B.

[0049] First put the aluminum ingot into the crucible resistance furnace, when the aluminum ingot is melted and the melt temperature is 730°C, add AlCu50, AlMn10, AlCr4, AlBe3, AlZr4 master alloys and stir; when the melt temperature reaches 720°C, add Mg and Zn , slag removal and refining; when the temperature is 710°C, add Al-5Ti-B master alloy, stir and stand for 40 minutes, and cast into a cast iron mold with a temperature of 700°C;

[0050] Homogenize the casted aluminum alloy ingot above, the temperature of the homogenization treatment is 460°C, the treatment time is 20 hours, hot rolling at 460°C, intermediate annealing, the intermediate annealing temperature is 420°C, the intermediate The annealing time is 30 minutes, and the strong wind is used for rapid cooling after the intermediate anne...

Embodiment 3

[0053] The batching was carried out according to the mass percentage of Example 3 in Table 1 to make aluminum ingots, master alloys AlCu50, AlMn10, AlCr4, AlBe3, AlZr4, Al-5Ti-B.

[0054] First put the aluminum ingot into the crucible resistance furnace, when the aluminum ingot is melted and the melt temperature is 740°C, add AlCu50, AlMn10, AlCr4, AlBe3, AlZr4 master alloys and stir; when the melt temperature reaches 720°C, add Mg and Zn , slag removal, and refining; when the temperature is 720°C, add Al-5Ti-B master alloy, stir and stand for 30 minutes, and cast into a cast iron mold with a temperature of 700°C;

[0055] Homogenize the aluminum alloy ingots formed by casting above. The temperature of the homogenization treatment is 470°C, and the treatment time is 15 hours. The annealing time is 30min, and water quenching is used for rapid cooling after intermediate annealing. Cold rolling twice into thin plate;

[0056] Annealing the thin plate prepared above, the tempera...

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Abstract

The invention provides Al-Mg high magnesium alloys for automobile body sheets and a manufacturing method thereof, belonging to the technical field of alloy materials. The invention solves the following problem: the existing 5083 series alloys have insufficient strength and poor impact resistance and surface quality when being used for the automobile bodies. The alloys comprise the following components in percentage by weight: 0.01-0.2wt% of Cu, 0.6-0.9wt% of Mn, 4.9-5.6wt% of Mg; 0.05-0.2wt% of Cr, 0.1-1.5wt% of Zn, 0.005-0.01wt% of Be, 0.05-0.2wt% of Ti, 0.05-0.2wt% of Zr, not more than 0.2wt% of Si, not more than 0.3wt% of Fe and the balance Al. The alloys have the advantages of high strength and good plasticity and corrosion resistance.

Description

technical field [0001] The invention relates to an aluminum alloy and a manufacturing method thereof, in particular to an Al-Mg series high-magnesium aluminum alloy for automobile body panels and a manufacturing method thereof, belonging to the technical field of alloy materials. Background technique [0002] The world's auto industry is facing three increasingly severe issues: energy, environmental protection, and safety. Reducing the weight of automobiles to reduce energy consumption, reduce environmental pollution, improve fuel economy of automobiles, and save limited resources have become the focus of major automobile factories. Lightweight is an important trend in the development of automobiles. By using lightweight materials to replace traditional steel materials, the weight of automobiles can be reduced to save fuel. Aluminum alloy, as the preferred material for automobile lightweight, has excellent performance unmatched by other materials. [0003] 5083 aluminum al...

Claims

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Application Information

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IPC IPC(8): C22C21/06C22C1/03C22F1/047
Inventor 丁荣辉曲明洋黄文辉曾凡清张超
Owner ZHEJIANG GKO IND CO LTD
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