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Rolling method for high-strength aluminum alloy plate

An aluminum alloy plate and high-strength technology, which is applied in the field of aluminum alloy materials, can solve the problems of reduction, durability of aluminum alloy materials, and damage tolerance that cannot be improved simultaneously, so as to eliminate dendrite segregation, improve microhardness, and realize alloy The effect of ingredients

Inactive Publication Date: 2017-05-10
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while improving the strength and toughness of aluminum alloy materials, the durability and damage tolerance of aluminum alloy materials cannot be simultaneously improved, or even decreased.

Method used

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  • Rolling method for high-strength aluminum alloy plate
  • Rolling method for high-strength aluminum alloy plate
  • Rolling method for high-strength aluminum alloy plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The rolling method of the high-strength aluminum alloy plate of the present invention comprises the following steps:

[0027] A. Homogenize and anneal the Al-Mg-Si-Cu alloy billet after refining at 500°C for 12 hours;

[0028] B. Control the temperature of the Al-Mg-Si-Cu alloy billet after annealing at 390°C. After the temperature inside and outside of the Al-Mg-Si-Cu alloy billet is uniform, perform a single-pass 15% hot rolling pre-rolling Deformation, roll rolling line speed is 0.4m / min, continue to control the temperature of the Al-Mg-Si-Cu alloy billet to 390 ° C, and then carry out single-pass 70% large reduction rolling deformation, roll rolling The line speed is 0.4m / min, and the thick slab is obtained by rolling, and the thick slab is air-cooled to room temperature;

[0029] C. The cooled thick slab is subjected to solution treatment at 450°C for 0.5h, and then water quenched;

[0030] D. Pre-aging the thick slab after water quenching at 150°C for 10h, and t...

Embodiment 2

[0035] The rolling method of the high-strength aluminum alloy plate of the present invention comprises the following steps:

[0036] A. Homogenize and anneal the Al-Mg-Si-Cu alloy billet after refining at 520°C for 18 hours;

[0037] B. Control the temperature of the Al-Mg-Si-Cu alloy billet after annealing at 395°C. After the temperature inside and outside of the Al-Mg-Si-Cu alloy billet is uniform, perform a single-pass 16% hot rolling pre-rolling Deformation, roll rolling line speed is 0.5m / min, continue to control the temperature of Al-Mg-Si-Cu alloy ingot billet to 395°C, and then carry out single-pass 72% large reduction rolling deformation, roll rolling The line speed is 0.5m / min, and the thick slab is obtained by rolling, and the thick slab is water-cooled to room temperature;

[0038] C. The cooled thick slab is subjected to solution treatment at 470°C for 0.8h, and then water quenched;

[0039] D. Pre-aging the thick slab after water quenching at 180°C for 12h, and...

Embodiment 3

[0044] The rolling method of the high-strength aluminum alloy plate of the present invention comprises the following steps:

[0045] A. Homogenize and anneal the Al-Mg-Si-Cu alloy billet after refining at 550°C for 24 hours;

[0046] B. Control the temperature of the Al-Mg-Si-Cu alloy billet after annealing at 400°C. After the temperature inside and outside of the Al-Mg-Si-Cu alloy billet is uniform, perform a single-pass 17% hot rolling pre-rolling Deformation, the rolling speed of the rolls is 0.6m / min, continue to control the temperature of the Al-Mg-Si-Cu alloy billet to 400°C, and then carry out a single pass of 75% large reduction rolling deformation, roll rolling The line speed is 0.6m / min, and the thick slab is obtained by rolling, and the thick slab is air-cooled to room temperature;

[0047] C. The cooled thick slab is subjected to solution treatment at 510°C for 1.2h, and then water quenched;

[0048] D. Pre-aging the thick slab after water quenching at 200°C for ...

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Abstract

The invention discloses a rolling method for a high-strength aluminum alloy plate. The rolling method comprises the following steps that A, a refined aluminum alloy ingot blank is subjected to homogenizing annealing under the temperature of 500-600 DEG C; B, the temperature is controlled to 390-410 DEG C, after the inner temperature and the outer temperature are uniform, single-pass 15%-20% hot rolling predeformation is conducted, the temperature continues to be controlled to 390-410 DEG C, then single-pass 70-80% high reduction rolling deformation is conducted, and a thick plate blank is obtained and is subjected to water cooling or air cooling; C, 0.5-2 h of solution treatment is conducted under the temperature of 450-550 DEG C, and then water quenching is conducted; D, 10-15 h of pre-aging treatment is conducted under the temperature of 150-250 DEG C, and then air cooling is conducted to the room temperature; and E, single-pass 40-60% cold rolling deformation is conducted, the plate is obtained, then 150-200 DEG C final aging treatment is conducted, and the treatment time is 3-5 h. The plate prepared through the rolling method has high strength and has high damage resistance and long service life at the same time.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy materials, in particular to a rolling method of high-strength aluminum alloy plates. Background technique [0002] Due to its low density, high specific strength and specific stiffness, good elasticity, good impact resistance, corrosion resistance, wear resistance, easy surface coloring, good processing formability and high recycling and regeneration, aluminum alloys are widely used in aviation. , aerospace, automobile, machinery manufacturing, shipbuilding, construction, decoration and other fields, its strength is generally between 480-500MPa. With the rapid development of science and technology and industrial economy in recent years, further improving the performance of aluminum alloy materials has become a common concern of the international aluminum industry. The implementation of the National Large Aircraft Plan puts forward higher requirements for the mechanical properties of high-s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/05C22C1/02C22C1/06C22C21/08C22C21/02C22C21/14C22C21/16
CPCC22C1/026C22C1/06C22C21/02C22C21/08C22C21/14C22C21/16C22F1/002C22F1/05
Inventor 孙有平何江美
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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