Method for preparing aluminum-magnesium ultrafine crystal composite plate with multilayer structure

A multi-layer structure, ultra-fine crystal technology, applied in the direction of chemical instruments and methods, metal rolling, layered products, etc., can solve the problems of material matrix performance degradation, difficult product quality, low composite strength, etc., to increase the bonding strength , improve performance, refine the effect of the organization

Inactive Publication Date: 2009-09-16
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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Problems solved by technology

In recent years, scholars at home and abroad have paid attention to new composite materials made of dissimilar metals combined in a layered composite manner. However, the current layered composite materials are limited by rolling composite technology, the production process is complicated, and the product quality is difficult to control. If there is The amount of reduction is not enough, the composite strength is not high, and the performance of the material matrix is ​​reduced after composite. In this study, the cumulative composite rolling technology was used to successfully prepare the aluminum / magnesium ultrafine grain multilayer structure composite material, which can not only refine the structure of the composite material , and can improve the interfacial composite strength of the composite material and strengthen the matrix of the composite material, providing a more suitable material combination and preparation technology for the industrial application of material elasticity and functional requirements

Method used

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  • Method for preparing aluminum-magnesium ultrafine crystal composite plate with multilayer structure
  • Method for preparing aluminum-magnesium ultrafine crystal composite plate with multilayer structure
  • Method for preparing aluminum-magnesium ultrafine crystal composite plate with multilayer structure

Examples

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Embodiment 1

[0019] see figure 1 , the preparation method of the aluminum-magnesium ultrafine-grained multilayer structure composite plate of the present invention selects sheet material Al or Al alloy, Mg or Mg alloy as raw material, and the structural layer of the prepared ultrafine-grain multilayer structure composite plate is successively Al / Mg / Al, or Al alloy / Mg alloy / Al alloy, or Al / Mg alloy / Al; its preparation adopts the method of cumulative clad rolling, specifically implemented according to the following steps:

[0020] 1. Use a wire brush to polish the surface of Al or Al alloy and Mg or Mg alloy plate to make the surface roughness Ra≤12.5μm;

[0021] 2. Clean the surface of the treated plate with acetone or absolute ethanol solution to remove metal shavings and impurities on the surface of the plate;

[0022] 3. Put the cleaned Al or Al alloy, Mg or Mg alloy in the order of Al / Mg / Al, or in the order of Al alloy / Mg alloy / Al alloy, or in the order of Al / Mg alloy / Al in order of h...

Embodiment 2

[0033] In this example, the difference between this implementation and Example 1 is that the surface treatment method of the plate is different. Firstly, the oxide on the surface of the plate is removed by chemical method, that is, NaOH, HNO 3 Wash with aqueous solution to remove scale, oil and impurities, and rinse with water; then use a wire brush / feather wheel to polish the surface of aluminum and aluminum alloy panels, magnesium and magnesium alloy panels, and honeycomb panels; finally use acetone or Clean the surface of the plate with anhydrous ethanol solution. Other steps are the same as in Example 1.

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Abstract

The invention relates to a method for preparing an aluminum-magnesium ultrafine crystal composite plate with a multilayer structure. The method selects a plate material Al or an Al alloy and Mg or a Mg alloy as raw materials; a structural layer of the prepared aluminum-magnesium ultrafine crystal composite plate with the multilayer structure is the Al / the Mg / the Al, or the Al alloy / the Mg alloy / the Al alloy or the Al / the Mg alloy / the Al in sequence; the preparation method adopts an accumulated composite rolling method which comprises the steps: polishing, cleaning, removing metal chips or impurities on the surface of the plate material, stacking in a hamburger mode, and positioning the stacked steel plate in a resistance furnace for heat treatment; taking out the plate material subjected to heat treatment, placing the plate material on a rolling machine, and rolling the plate material with 50 percent of rolling reduction in every pass; cutting cracked edges and burr in the edge part of the rolled plate material, cutting the plate material into two equivalent parts, and carrying out multipass accumulated composite rolling repeatedly; placing the plate material subjected to accumulated composite rolling in an air protection annealing furnace for heat treatment, cooling the plate material to the room temperature along the furnace and taking out the plate material; and the Al / Mg / Al composite steel plate with the multilevel structure can be obtained.

Description

technical field [0001] The invention relates to the preparation of composite materials, in particular to a method for preparing an aluminum-magnesium ultrafine-grained multilayer structure composite plate. The structure of the aluminum-magnesium ultra-fine-grained multilayer structure composite plate prepared by the method is Al / Mg / Al in sequence. Background technique [0002] With the advancement of science and technology, the requirements for materials are getting higher and higher. In addition to high strength, high toughness, corrosion resistance and other properties, materials are also required to have some contradictory properties under certain special environmental application conditions, such as: The electrical conductivity is better but the heat insulation is better, the strength and toughness are higher but the weight is lighter. Due to the multifunctional performance, lower cost and wide application range of dissimilar material composite materials, the developmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/38B21B37/58B21B47/00C21D1/00C21D1/26C21D11/00B32B15/01
CPCB32B15/017
Inventor 张兵袁守谦王超
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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