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Multistage creep age forming method for Al-Cu-Mg series aluminum alloy panel

A creep aging forming and aluminum alloy sheet technology, which is applied in the field of non-ferrous metal material processing engineering to achieve the effects of simple operation, remarkable effect, and improved mechanical properties and corrosion resistance.

Inactive Publication Date: 2014-07-16
CENT SOUTH UNIV
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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 multi-stage creep aging method suitable for the integral forming of Al-Cu-Mg series aluminum alloy plates, which solves the shape / property synergistic development in the current integral panel forming process and improves the mechanical properties and durability at the same time. Corrosion Performance Bottlenecks

Method used

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  • Multistage creep age forming method for Al-Cu-Mg series aluminum alloy panel
  • Multistage creep age forming method for Al-Cu-Mg series aluminum alloy panel
  • Multistage creep age forming method for Al-Cu-Mg series aluminum alloy panel

Examples

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Effect test

Embodiment 1

[0019] A 2.54mm thick plate is solution treated at 495°C for 60 minutes and then water quenched, followed by cold rolling with a deformation rate of 3% and natural aging treatment for 150 hours. The first stage creep aging temperature is 150°C, the applied stress is 185MPa, and the forming time is 12 hours. The second creep aging temperature is 180°C, the applied stress is 185MPa, and the forming time is 12 hours.

Embodiment 2

[0021] B2. The 54mm thick plate is solution treated at 495°C for 60 minutes and then water quenched, followed by cold rolling with a deformation rate of 3% and natural aging treatment for 150 hours. The first stage creep aging temperature is 150°C, the applied stress is 205MPa, and the forming time is 12 hours. The second creep aging temperature is 180°C, the applied stress is 185MPa, and the forming time is 12 hours.

Embodiment 3

[0023] C2.54mm thick plate is solution treated at 495°C for 60 minutes and then water quenched, followed by cold rolling with a deformation rate of 3% and natural aging treatment for 150 hours. The first stage creep aging temperature is 150°C, the applied stress is 225MPa, and the forming time is 12 hours. The second creep aging temperature is 180°C, the applied stress is 205MPa, and the forming time is 12 hours.

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Abstract

The invention discloses a multistage creep age forming method for an Al-Cu-Mg series aluminum alloy panel. The method includes the steps that firstly, water quenching is conducted on the Al-Cu-Mg series aluminum alloy panel with the thickness ranging from 2 mm to 35 mm after solid solution processing is conducted on the Al-Cu-Mg series aluminum alloy panel at the temperature ranging from 490 DEG C to 505 DEG C for 30 minutes to 90 minutes, 1 percent to 5 percent of cold rolling is conducted, and then natural aging processing is conducted for 100 hours to 200 hours; secondly, the first stage of creep age forming is conducted, wherein the creep age temperature ranges from 140 DEG C to 160 DEG C, the applied stress ranges from 170 MPa to 230 MPa, and the time ranges from 10 hours to 14 hours; thirdly, the second stage of creep age forming is conducted, wherein the creep age temperature ranges from 160 DEG C to 200 DEG C, the applied stress ranges from 170 MPa to 230 MPa, and the time ranges from 10 hours to 14 hours; fourthly, the panel is unloaded from a die. When the Al-Cu-Mg series aluminum alloy panel is processed through the method, the mechanical property and the corrosion resistance of the aluminum alloy panel can be effectively improved.

Description

technical field [0001] The invention relates to a multi-stage creep aging forming method for Al-Cu-Mg series aluminum alloy plates, which belongs to the technical field of non-ferrous metal material processing engineering. Background technique [0002] Al-Cu-Mg series aluminum alloy is a hard aluminum alloy that can be strengthened by heat treatment. It has the advantages of high strength, low specific gravity, good heat resistance and fatigue strength. It is a high-strength structural aluminum alloy with good comprehensive performance. It is widely used as a material for wall panels and skin structural parts in aerospace. Integral panel manufacturing technology is a research hotspot in aerospace parts in recent years. Compared with traditional aerospace component manufacturing technology, integral panel technology has greatly improved fatigue strength, greatly reduced weight, and greatly enhanced airtightness. Creep age forming technology is a kind of integral panel manufa...

Claims

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Application Information

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IPC IPC(8): C22F1/04C22F1/057
Inventor 蔺永诚刘冠姜玉强李佳
Owner CENT SOUTH UNIV
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