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Methods of Improving Plasticity of 5052 Aluminum Alloy as Cold Rolled

An aluminum alloy and plasticity technology, which is applied in the field of improving the plasticity of 5052 aluminum alloy, can solve the problems of poor plasticity in cold rolling state of 5052 aluminum alloy, and achieve the effect of improving elongation.

Active Publication Date: 2018-03-20
GUANGXI LIUZHOU YINHAI ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for improving the plasticity of 5052 aluminum alloy in the cold-rolled state, which can solve the problem of poor plasticity in the cold-rolled state of the existing 5052 aluminum alloy

Method used

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  • Methods of Improving Plasticity of 5052 Aluminum Alloy as Cold Rolled
  • Methods of Improving Plasticity of 5052 Aluminum Alloy as Cold Rolled

Examples

Experimental program
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Embodiment 1

[0014] The steps of the method for improving the plasticity of 5052 aluminum alloy in the cold-rolled state in this embodiment are as follows: add 0.01% Sr to the 5052 aluminum alloy slab, and prepare a recrystallized slab through hot rolling and heat treatment processes. The thickness of the slab is 10 mm, and the The prepared slab is cold-rolled in two steps. The first step is cold-rolled through three rolling passes. The surface temperature of the slab entering the rolling mill is controlled at 63°C, and the plate is rolled to a thickness of 2.5mm. After cold rolling, an intermediate annealing is carried out, the intermediate annealing temperature is 350°C, and the holding time is 1.5h; the second step of cold rolling is through three rolling passes, and the surface temperature of the slab entering the rolling mill is controlled at 66°C, and the plate is rolled to 0.2mm thick.

Embodiment 2

[0016] In this example, 0.03% Sr is added to the 5052 aluminum alloy slab. The surface temperature of the slab when it enters the rolling mill is 61°C, and the surface temperature of the plate before the second cold rolling is 65°C. Other characteristics are the same as in Example 1.

Embodiment 3

[0018] In this embodiment, 0.05% Sr is added to the 5052 aluminum alloy slab, and the surface temperature of the slab entering the rolling mill is 62° C., and other characteristics are the same as those in Embodiment 1.

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Abstract

The invention discloses a method for improving cold-rolling plasticity of 5052 aluminum alloy and relates to the technical field of metal processing. According to the method, 0.01-0.05% of Sr is added to the 5052 aluminum alloy, a recrystallized-state plate blank is prepared through hot rolling and heat treatment, the obtained plate blank is cold-rolled by two steps, and the temperature of the surface of the plate blank is controlled to be 61-90 DEG C when the plate blank enters a rolling machine; the reduction rate of the first substep of cold rolling is 70-75%, and intermediate annealing is performed once after the first substep of cold rolling; and the total reduction rate after the second substep of cold rolling is controlled to be 95-98%, and the plate blank is rolled to be 0.2-0.8 mm thick. Through the method, the problem of poor cold-rolling plasticity of existing 5052 aluminum alloy is solved.

Description

technical field [0001] The invention relates to the technical field of metal processing, in particular to a method for improving the plasticity of 5052 aluminum alloy. Background technique [0002] 5052 aluminum alloy has the characteristics of medium strength, excellent welding performance and good corrosion resistance. It is widely used in aerospace, ship transportation, architectural decoration and other fields. It is one of the important materials for preparing LNG carriers. However, the Mg content in the 5052 aluminum alloy is relatively high, and stress corrosion and cracking are prone to occur during plastic processing; in addition, during the melting and casting process, the iron element in the alloy is easily combined with other elements to form a coarse iron phase, causing stress concentration. Difficulty in deformation. Therefore, the 5052 aluminum alloy is easy to crack during the cold rolling deformation process, and the plasticity is poor after being processed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/047C22C21/08
CPCC22C21/08C22F1/047
Inventor 蒋显全刘栩李严法戴青松赵明伟佘欣未李权齐保邓运来
Owner GUANGXI LIUZHOU YINHAI ALUMINUM IND
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