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Stabilization technology for 5383 aluminum alloy

A stabilized, aluminum alloy technology, applied in the field of aluminum alloys, can solve problems such as corrosion failure, achieve stable performance, simple preparation process, and high strength

Inactive Publication Date: 2017-12-15
TIANJIN ZHONGWANG ALUMINUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a stabilization process for 5383 aluminum alloys in order to solve the problem that corrosion failure is prone to occur when 5383 aluminum alloys are used in corrosive environments such as the sea

Method used

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  • Stabilization technology for 5383 aluminum alloy
  • Stabilization technology for 5383 aluminum alloy
  • Stabilization technology for 5383 aluminum alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A stabilization process of 5383 aluminum alloy includes the following steps:

[0024] A. Produce 5383 aluminum alloy ingots by semi-continuous water-cooling casting method. The mass percentage ratio of each element of the aluminum alloy ingots is: Si 0.25%, Mg 5.2%, Fe 0.25%, Cu 0.2%, Mn 1.0%, Cr 0.25% , Ti 0.15%, Zn0.4%, Zr 0.2%, the balance Al.

[0025] B. The aluminum alloy ingot is milled and then hot rolled to obtain an aluminum alloy plate, wherein the thickness of the aluminum alloy plate after hot rolling is 6.0 mm, and the hot rolling temperature is 340°C.

[0026] C. Cold-roll the hot-rolled aluminum alloy sheet, the thickness of the cold-rolled aluminum alloy sheet is 4.8mm, and the cold-rolling deformation is 20%, and then the cold-rolled aluminum alloy sheet is heated at 210°C, 220°C , 230℃, 240℃, 250℃ for 2 hours of stabilization annealing.

[0027] D. Sawing the stabilized annealed aluminum alloy sheet on a sawing machine according to the specified size.

Embodiment 2

[0029] The difference between Example 2 and Example 1 is that the thickness of the aluminum alloy sheet after cold rolling in step C is 4.2 mm, and the cold rolling deformation is 30%.

Embodiment 3

[0031] The difference between Example 3 and Example 1 is that the thickness of the aluminum alloy sheet after cold rolling in step C is 3.6 mm, and the cold rolling deformation is 40%.

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Abstract

The invention belongs to the technical field of aluminum alloys, and relates to a stabilization technology for a 5383 aluminum alloy. On the basis of components of a 5083 alloy, the Zr element is added and can be combined with the Al element to form an Al3Zr phase, the dislocation, subboundary and grain boundary in the 5383 aluminum alloy can be effectively pinned through the Al3Zr phase, and accordingly the strength and the recrystallization temperature of the 5383 aluminum alloy are obviously increased. 5383 aluminum alloy panels with the thickness being 6 mm are subjected to cold rolling, cold rolling is conducted to 4.8 mm, 4.2 mm, 3.6 mm and 3.0 mm, the deformations of the 5383 aluminum alloy panels are 20%, 30%, 40% and 50%, the deformed 5383 aluminum alloy panels are annealed for 2 hours at the temperatures of 210 DEG C, 220 DEG C, 230 DEG C, 240 DEG C and 250 DEG C, then, the mechanical performance and corrosion resistance of the aluminum alloy panels with different deformations and at different annealing temperatures are tested, and the technology in which the cold rolling deformation ranges from 30% to 50% and the annealing temperature ranges from 230 DEG C to 250 DEG C is selected as the optimal stabilization technology.

Description

Technical field [0001] The invention belongs to the technical field of aluminum alloys, and relates to a stabilization process of 5383 aluminum alloy. Background technique [0002] The working environment of ships requires its structural materials to have high specific strength, toughness, corrosion resistance, fatigue resistance, impact resistance and good weldability. Especially for ships traveling in the marine environment, because seawater contains a lot of Cl - , Is a typical electrolytic solution with strong corrosiveness. Under such strong corrosive environment and stress, marine materials are required to have excellent electrochemical corrosion and stress corrosion resistance. Among traditional materials, although steel and polymer-based composite materials have a large number of applications in shipbuilding, aluminum alloy materials have a series of comprehensive properties that steel and polymer materials do not have, such as high specific strength and corrosion resistan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/047
CPCC22F1/047
Inventor 张义杨直达金雪李玉博郭富安
Owner TIANJIN ZHONGWANG ALUMINUM IND CO LTD
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