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Aluminum alloy 5052 having high corrosion resistance and manufacturing method thereof

An aluminum alloy, corrosive technology, applied in the field of alloy materials, can solve the problems that cannot fully meet the needs of ship applications, achieve the effects of improving heat resistance and toughness, improving metallographic structure, and reducing crack sources

Inactive Publication Date: 2010-12-22
ZHEJIANG GKO ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing 5052 aluminum alloy material also has a certain corrosion resistance, it cannot fully meet the application requirements of the shipbuilding industry.

Method used

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  • Aluminum alloy 5052 having high corrosion resistance and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] According to the mass percentage of Example 1 in Table 1, the ingredients were prepared to make aluminum ingots, master alloys AlCu50, AlMn10, AlCr4 and Al-rare earth, etc.

[0031] First put the aluminum ingot into the crucible resistance furnace, when the aluminum ingot is melted, add the intermediate alloy and stir; then add Mg and Zn, slag and refine; stir and stand still, pour into the cast iron mold; Aluminum alloy ingots are hot-rolled and cold-rolled into aluminum alloy coils, and the aluminum alloy coils are cold-rolled to a thickness of 3.0mm. The cold-rolled aluminum alloy coil is annealed at a temperature of 150° C., and the holding time is 8 hours.

Embodiment 2

[0033] According to the mass percentage of Example 2 in Table 1, the ingredients were prepared to make aluminum ingots, master alloys AlCu50, AlMn10, AlCr4 and Al-rare earth, etc.

[0034] First put the aluminum ingot into the crucible resistance furnace, when the aluminum ingot is melted, add the intermediate alloy and stir; then add Mg and Zn, slag and refine; stir and stand still, pour into the cast iron mold; The aluminum alloy ingot is hot-rolled and cold-rolled into an aluminum alloy plate, and the aluminum alloy plate is cold-rolled to a thickness of 2.0mm, and the cold-rolled aluminum alloy plate is annealed at a temperature of 160°C, and the holding time is 5 hours.

Embodiment 3

[0036] 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 and Al-rare earth, etc.

[0037] First put the aluminum ingot into the crucible resistance furnace, when the aluminum ingot is melted, add the intermediate alloy and stir; then add Mg and Zn, slag and refine; stir and stand still, pour into the cast iron mold; Aluminum alloy ingots are hot-rolled and cold-rolled into aluminum alloy coils, and the aluminum alloy coils are cold-rolled to a thickness of 1.0mm, and the cold-rolled aluminum alloy coils are annealed at a temperature of 120°C. The holding time is 10 hours.

[0038] The 5052 aluminum alloys prepared in Examples 1-3 and the existing common 5052 aluminum alloys were randomly selected for corrosion performance experiments, and the corrosion medium was 3.5% NaCl+0.05MgCl 2 (atomic percent) aqueous solution to simulate seawater. After 40 days of simulated seawater exper...

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Abstract

The invention provides an aluminum alloy 5052 having high corrosion resistance and a manufacturing method thereof, which belongs to the technical field of alloy materials and solves the problem of low corrosion resistance of the traditional aluminum alloy 5052 material. The aluminum alloy 5052 having high corrosion resistance comprises the following components in percentage by weight: no more than 0.20% of Si, no more than 0.20% of Cu, 2.4-2.6% of Mg, no more than 0.10% of Zn, no more than 0.10% of Mn, 0.18-0.30% of Cr, 0.01-0.40% of Fe, no more than 0.05% of single other element, no more than 0.15% of total other elements, 0.01-0.8% of rare earth elements and the balance of Al. The aluminum alloy 5052 having high corrosion resistance can improve the corrosion resistance and simultaneously maintain the stabilization of mechanical properties.

Description

technical field [0001] The invention relates to a 5xxx series aluminum alloy and a manufacturing method thereof, in particular to a highly corrosive 5052 aluminum alloy and a manufacturing method thereof, belonging to the technical field of alloy materials. Background technique [0002] The 5xxx series aluminum alloy material belongs to the aluminum-magnesium alloy in the deformed aluminum alloy. It is an alloy that cannot be strengthened by heat treatment. It has good formability, corrosion resistance, weldability, and medium strength. It is widely used in the manufacture of aircraft fuel tanks, oil pipes, and sheet metal parts of transportation vehicles and ships, instruments, street lamp brackets and rivets, hardware products, electrical shells, etc. [0003] 5052 aluminum alloy is one of the 5xxx series aluminum alloys. The Mg content is 2.2%-2.8%. It has the characteristics of light weight, medium strength, good corrosion resistance and weldability, and easy processing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/06C22F1/047
Inventor 丁荣辉曾凡清曲明洋黄文辉张超
Owner ZHEJIANG GKO ALUMINUM
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