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Rolling method for ultrahigh-strength aluminum alloy plate

An aluminum alloy sheet, ultra-high strength technology, applied in the field of aluminum alloy materials, can solve the problems of the durability and damage tolerance of aluminum alloy materials cannot be simultaneously increased and decreased, and achieves the improvement of microhardness, elimination of dendrite segregation, extension of The effect of service life

Inactive Publication Date: 2017-03-08
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 ultrahigh-strength aluminum alloy plate
  • Rolling method for ultrahigh-strength aluminum alloy plate
  • Rolling method for ultrahigh-strength aluminum alloy plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The rolling method of the ultra-high-strength aluminum alloy plate of the present invention comprises the following steps:

[0026] A. Homogenize and anneal the Al-Cu-Mg alloy billet after refining at 450°C for 24 hours;

[0027] B. Control the temperature of the Al-Cu-Mg alloy billet after annealing at 360°C. After the temperature inside and outside of the Al-Cu-Mg alloy billet is uniform, perform a single-pass 2% hot rolling pre-deformation, roll rolling The line speed is 0.4m / min, continue to control the temperature of the Al-Cu-Mg alloy billet to 360°C, and then carry out a single-pass 60% large-reduction rolling deformation, and the rolling line speed is 0.4m / min. min, the thick slab is obtained by rolling, and the thick slab is water-cooled or air-cooled;

[0028] C. The cooled thick slab is subjected to solution treatment at 450°C for 0.5h, and then water quenched;

[0029] D. Pre-aging the thick slab after water quenching at 150°C for 6 hours, and then air coo...

Embodiment 2

[0034] The rolling method of the ultra-high-strength aluminum alloy plate of the present invention comprises the following steps:

[0035] A. Homogenize and anneal the Al-Cu-Mg alloy billet after refining at 460°C for 28 hours;

[0036] B. Control the temperature of the Al-Cu-Mg alloy billet after annealing at 380°C. After the temperature inside and outside of the Al-Cu-Mg alloy billet is uniform, perform a single-pass 3% hot rolling pre-deformation, roll rolling The line speed is 0.5m / min, continue to control the temperature of the Al-Cu-Mg alloy billet to 380°C, and then carry out a single-pass 62% large reduction rolling deformation, and the roll rolling line speed is 0.5m / min. min, the thick slab is obtained by rolling, and the thick slab is water-cooled or air-cooled;

[0037] C. The cooled thick slab is subjected to solution treatment at 480°C for 1 hour, and then water quenched;

[0038] D. Pre-aging the thick slab after water quenching at 180°C for 6 hours, and then ...

Embodiment 3

[0043] The rolling method of the ultra-high-strength aluminum alloy plate of the present invention comprises the following steps:

[0044] A. Homogenize and anneal the Al-Cu-Mg alloy billet after refining at 500°C for 32 hours;

[0045] B. Control the temperature of the Al-Cu-Mg alloy billet after annealing at 400°C. After the temperature inside and outside of the Al-Cu-Mg alloy billet is uniform, perform a single-pass 4% hot rolling pre-deformation, roll rolling The line speed is 0.6m / min, continue to control the temperature of the Al-Cu-Mg alloy billet to 400°C, and then carry out a single pass of 65% large reduction rolling deformation, and the roll rolling line speed is 0.6m / min. min, the thick slab is obtained by rolling, and the thick slab is water-cooled or air-cooled;

[0046] C. The cooled thick slab is subjected to solution treatment at 500°C for 1.5h, and then water quenched;

[0047] D. Pre-aging the thick slab after water quenching at 200°C for 6 hours, the roll...

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Abstract

The invention discloses a rolling method for an ultrahigh-strength aluminum alloy plate. The rolling method comprises the following steps: A, a refined aluminum alloy ingot blank is annealed for 24-48 h uniformly at 450-550 DEG C; B, the annealing temperature is controlled to be 360-440 DEG C; single-pass 2-5% hot rolling pre-deformation is performed after inner temperature and outer temperature are uniform; temperature is continuously controlled to be 360-440 DEG C; then single-pass high reduction rolling deformation not less than 60% is performed, so that a thick plate blank is obtained; then water cooling or air cooling is performed; C, the cooled thick plate blank is subjected to 0.5-3h solid solution treatment at 450-550 DEG C, and then is subjected to water quenching; D, the water quenched thick plate blank is subjected to 6h of pre-aging treatment at 150-250 DEG C, and then is air-cooled to room temperature; and E, the thick plate blank which is air cooled to the room temperature is subjected to 40-60% of cold rolling deformation, and then is subjected to final-aging treatment at 120-200 DEG C. The plate made with the rolling method has ultrahigh strength, high damage-resistance and long service life.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy materials, in particular to a rolling method of ultra-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 ...

Claims

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Application Information

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IPC IPC(8): C22F1/057C22C21/16
CPCC22C21/16C22F1/057
Inventor 孙有平何江美
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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