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Laminated high-strength aluminum alloy plate and regulation and control preparation method and testing method thereof

An aluminum alloy plate, high-strength technology, applied in the direction of testing material hardness, metal processing equipment, test sample preparation, etc., can solve the problems of easy plastic deformation, affecting the bending deformation and shrinkage resistance of aluminum alloy plates, etc. Achieve the effect of increasing hardness, improving bending deformation and shrinkage resistance

Active Publication Date: 2021-07-13
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The existing aluminum alloy sheet proposed in view of the above background technology uses pure aluminum as the main material, and the average hardness of pure aluminum is 20HV. Due to the low Vickers hardness of the material itself, the aluminum alloy sheet prepared based on this material is resistant to external factors. When the object is pressed into the force received, plastic deformation is prone to occur, which affects the deficiencies in the anti-bending deformation and shrinkage resistance of the aluminum alloy sheet. The invention provides a laminated high-strength aluminum alloy sheet and its preparation method and test method. Method, solved the problem that above-mentioned background technology proposes

Method used

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  • Laminated high-strength aluminum alloy plate and regulation and control preparation method and testing method thereof
  • Laminated high-strength aluminum alloy plate and regulation and control preparation method and testing method thereof
  • Laminated high-strength aluminum alloy plate and regulation and control preparation method and testing method thereof

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Embodiment 1

[0035] see figure 1 , the present embodiment provides a control preparation method for laminated high-strength aluminum alloy plates, including the following steps.

[0036] (1) Quantitative aluminum powder and bags are provided for backup.

[0037] The oxidized aluminum powder is selected, and the aluminum powder is measured with a spoon. The shape of the aluminum powder can be spherical, flake or irregular, and the average particle size of the aluminum powder is 5-20 μm. The sheath can be aluminum alloy material, the wall thickness of the sheath is greater than the maximum of the length, width and height of the aluminum powder block blank, the high temperature compressive strength of the sheath can be above 100Mpa, and the sheath size can be 60 ×44×40mm.

[0038] (2) Aluminum powder cold pressing treatment: Apply a pressure of 150-450Mpa to the aluminum powder (filled in a cold-pressing mold) for pressing, and the pressing amount during pressing is 9-12mm. 20min, take o...

Embodiment 2

[0052] The control and preparation method of the laminated high-strength aluminum alloy sheet in this example is basically the same as the control and preparation method of the laminated high-strength aluminum alloy sheet in Example 1, the difference is that the control and preparation method of the laminated high-strength aluminum alloy sheet in this embodiment is specifically The following steps.

[0053] (1) Quantitative aluminum powder and bags are provided for backup.

[0054] The oxidized aluminum powder is selected, and the aluminum powder is measured with a spoon. The shape of the aluminum powder is spherical, flake or irregular, and the average particle diameter of the aluminum powder is 9-11 μm.

[0055] The sheath is made of 7A60 aluminum alloy, the wall thickness of the sheath is greater than the maximum of the length, width and height of the aluminum powder block blank, the high temperature compressive strength of the sheath is above 100Mpa, and the sheath size i...

Embodiment 3

[0067] The control and preparation method of the laminated high-strength aluminum alloy sheet in this embodiment is basically similar to the control and preparation method of the laminated high-strength aluminum alloy sheet introduced in Example 1, the difference is that other reinforcements can be used in step (1) of this embodiment Mixed aluminum powder, the aluminum powder is weighed with an electronic balance.

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Abstract

The invention discloses a laminated high-strength aluminum alloy plate and a regulation and control preparation method and testing method thereof. The problems that at present, pure aluminum is low in hardness, and an aluminum alloy plate is poor in deformation resistance are solved. The regulation and control preparation method of the laminated high-strength aluminum alloy plate comprises the following steps that (1) quantitative aluminum powder and a sheath are provided for standby application; (2) cold pressing treatment is conducted on the aluminum powder, specifically, the aluminum powder is pressed by applying the pressure intensity of 150-450Mpa, and the pressing amount during pressing is 37.5-50%; (3) heat treatment is conducted; (4) an aluminum powder block blank subjected to heat treatment is cooled; (5) pressurization and heating treatment is conducted; and (6) the heated aluminum powder block blank and the sheath are subjected to thermoplastic pressing treatment. According to the laminated high-strength aluminum alloy plate and the regulation and control preparation method and testing method thereof, a cold pressing-heat treatment-thermoplastic pressing composite preparation mode is provided, an aluminum powder structure in the obtained laminated high-strength aluminum alloy plate is changed into a near-sheet shape, a laminated brick structure is formed through mutual lap joint, the average hardness can reach 47HV, and the bending deformation resistance and shrinkage resistance of the plate are improved.

Description

technical field [0001] The present invention relates to the technical field of control and preparation of high-strength aluminum alloy plates, in particular to a method for control and preparation of laminated high-strength aluminum alloy plates, to a laminated high-strength aluminum alloy plate, and to a laminated high-strength aluminum alloy plate test method. Background technique [0002] Aluminum alloys and their composite materials have the advantages of low density, good thermal stability, and strong designability, and are widely used in aerospace, transportation, and mechanical electronics. Aluminum and aluminum alloy powders naturally have a dense layer on the surface Oxide film, it is difficult to obtain dense aluminum alloy and its composite products through hot pressing and sintering. Therefore, in order to obtain high-performance powder metallurgy aluminum alloy products, it is necessary to perform extrusion, rolling or forging after sintering. Processing or for...

Claims

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Application Information

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IPC IPC(8): B22F7/02B22F3/04B22F3/14B22F3/24B22F1/00G01N1/32G01N1/36G01N1/44G01N3/08G01N3/40
CPCB22F7/02B22F3/04B22F3/24B22F3/14G01N3/40G01N3/08G01N1/44G01N1/32G01N1/36B22F2003/248G01N2001/366B22F1/068
Inventor 石文超曹洪薛世博薛传妹许锋龚冬梅
Owner HEFEI UNIV OF TECH