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A deformation heat treatment method for improving the tensile properties of 6000 series aluminum alloy sheet

A technology for deformation heat treatment and tensile properties, applied in the field of improving the tensile properties of 6000 series aluminum alloy sheets, can solve the problems of high equipment requirements, reduced alloy plasticity, complicated procedures, etc., and achieves elimination of dislocation, good plasticity, and maintenance of plasticity. Effect

Active Publication Date: 2015-11-18
SUZHOU JIALIANYA IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these strong plastic deformation methods may not be able to produce large-size plates, or the equipment requirements are high, or the process is complicated, and it is still difficult to realize industrial production at present; moreover, these strong plastic deformation methods often introduce a large number of dislocations, resulting in alloy strength. Significantly increased, while the plasticity of the alloy was significantly reduced

Method used

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  • A deformation heat treatment method for improving the tensile properties of 6000 series aluminum alloy sheet
  • A deformation heat treatment method for improving the tensile properties of 6000 series aluminum alloy sheet
  • A deformation heat treatment method for improving the tensile properties of 6000 series aluminum alloy sheet

Examples

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Effect test

Embodiment 1

[0029] 6061 aluminum alloy hot-rolled plate, after 550 ℃ / 1h solution treatment and water quenching, the cold rolling deformation is 75%. After that, after solution treatment at 550°C / 1h and water quenching, peak aging at 180°C / 6h. At this time, the tensile properties of the alloy are shown in Table 1, and the precipitation phase of the matrix is ​​shown in Table 1. figure 2 b, tensile fracture morphology see image 3 b.

[0030] From figure 2 It can be seen that the precipitated phases of the matrix in the alloy T6 state treated by the two processes of Comparative Example 1 and Example 1 are mainly β″ phase and a very small amount of Q′, indicating that the treatment of the present invention does not affect the aging precipitation behavior of 6061 alloy, that is, It is said that it does not affect its aging strengthening effect.

[0031] From image 3 It can be seen that the tensile fractures of the alloy T6 treated by the processes of Comparative Example 1 and Exampl...

Embodiment 2

[0034] 6061 aluminum alloy hot-rolled sheet, after 560°C / 1h solution treatment and water quenching, the cold rolling deformation is 60%; after that, after 560°C / 1h solution treatment and water quenching, 170°C / 10h peak aging. At this time, the tensile properties of the alloy are shown in Table 1.

Embodiment 3

[0036] 6061 aluminum alloy hot-rolled sheet, after 530℃ / 1h solution treatment and water quenching, the cold rolling deformation is 80%; after that, after 530℃ / 1h solution treatment and water quenching, 160℃ / 18h peak aging . At this time, the tensile properties of the alloy are shown in Table 1.

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Abstract

The invention belongs to the technical field of aluminum alloy deformation heat-treatment and discloses a deformation heat-treatment method for improving tensile properties of a 6000-series aluminum alloy thin plate. The deformation heat-treatment method is suitable for improvement of a 6000-series aluminum alloy thin plate. Aiming at further improving tensile properties of a 6000-series aluminum alloy thin plate, the invention provides the deformation heat-treatment method. The deformation heat-treatment method is mainly characterized by comprising the following steps of before final molding of a 6000-series aluminum alloy thin plate, carrying out solution treatment, carrying out quenching, carrying out large-deflection cold rolling so that required thin plate thickness is obtained, carrying out solution treatment, carrying out quenching and carrying out peak aging treatment. The deformation heat-treatment method can greatly improve strength of the 6000-series aluminum alloy thin plate and maintain good plasticity.

Description

technical field [0001] The invention belongs to the technical field of deformation heat treatment of aluminum alloys, and is especially suitable for improving the tensile properties of 6000 series aluminum alloy thin plates. Background technique [0002] 6000 series aluminum alloys, such as 6063, 6061, 6082, 6005, 6013, etc., are precipitation-strengthened alloys with low density, medium strength, and good weldability and formability. They are widely used in aerospace, transportation, Industrial aluminum profiles in fields such as construction and machine building. [0003] For precipitation-strengthened aluminum alloys, in order to obtain high strength, T6 treatment is usually performed, that is, after the alloy is solution treated and quenched, it is immediately aged at a certain temperature for a certain period of time, so that the supersaturated solid solution formed by solution treatment and quenching, Gradually decompose high-density nano-scale precipitates with diffe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/04
Inventor 李海苗芬芬王芝秀
Owner SUZHOU JIALIANYA IND
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