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Method for preparing magnesium-based composite board through asymmetric deformation processing and magnesium-based composite board

A deformation processing and composite plate technology, applied in metal processing equipment, contour control, manufacturing tools, etc., can solve problems such as high cost, low efficiency, and complicated process

Pending Publication Date: 2022-07-29
GUANGDONG INST OF NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an asymmetrical deformation process in order to overcome the defects in the prior art that the elongation at break and the interface bonding strength of the composite plate obtained by the above-mentioned existing method need to be further improved, and the process is complicated, the cost is high and the efficiency is low. A method for preparing a magnesium-based composite board and a magnesium-based composite board. The method has the advantages of simple preparation process, no need to process and modify the surface of the equipment, low cost and high efficiency, and has both good elongation at break, interfacial bonding strength and interfacial bonding Strength, can effectively weaken the base texture of the magnesium plate, and has a wide range of applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The original AZ31 magnesium alloy rolled sheet and the 1100 aluminum alloy rolled sheet were kept at 400°C for 60 minutes and 220°C for 15 minutes respectively. The size of the aluminum sheet was 250mm*200mm*2mm (length*width*thickness), and the size of the magnesium sheet was 200mm*140mm* 10mm (length*width*thickness). After the heat preservation treatment, the aluminum / magnesium / aluminum were stacked and fixed in order and rolled immediately. The roll diameter and roll speed of the upper roll were 400mm and 3m / min, respectively, and the roll diameter and roll speed of the lower roll were 200mm and 1.5m / min, respectively. , the single-pass rolling deformation is 60%, and the clad plate is kept at 250 ° C for 60 minutes after rolling, and finally a magnesium-based clad plate with good plastic forming ability is obtained. The basal texture strength of the magnesium layer in the clad plate is 10.4 , compared to the original magnesium plate (22.4), the basal texture is sig...

Embodiment 2

[0055] The original AZ31 magnesium alloy rolled sheet and 6082 aluminum alloy rolled sheet were kept at 450°C for 45 minutes and 280°C for 10 minutes, respectively. The size of the aluminum sheet was 100mm*80mm*2mm (length*width*thickness), and the size of the magnesium sheet was 60mm*50mm* 20mm (length*width*thickness). After the heat preservation treatment, the aluminum / magnesium / aluminum sequence was stacked and fixed, and rolled immediately. The roll diameter and roll speed of the upper roll were 200mm and 4m / min, respectively, and the roll diameter and speed of the lower roll were 100mm and 3m / min, respectively. The single-pass rolling deformation is 70%. After rolling, the clad plate is kept at 200 ° C for 90 minutes, and finally a magnesium-based clad plate with good plastic forming ability is obtained. The basal texture strength of the magnesium layer in the clad plate is 11.2. Compared with the original magnesium plate (22.4), the basal texture is obviously weakened; ...

Embodiment 3

[0057] The original AZ31 magnesium alloy rolled sheet and 6063 aluminum alloy rolled sheet were kept at 380°C for 60 minutes and 200°C for 30 minutes, respectively. The size of the aluminum sheet was 200mm*150mm*0.5mm (length*width*thickness), and the size of the magnesium sheet was 100mm*90mm *2mm (length*width*thickness). After the heat preservation treatment, the aluminum / magnesium / aluminum sequence was stacked and fixed and rolled immediately. The roll diameter and roll speed of the upper roll were 350mm and 6m / min, respectively, and the roll diameter and speed of the lower roll were 200mm and 4m / min, respectively. The single-pass rolling deformation is 75%. After rolling, the composite plate is kept at 190 °C for 120 minutes, and finally a magnesium-based composite plate with good plastic forming ability is obtained. The basal texture strength of the magnesium layer in the composite plate is 12. Compared with the original magnesium plate (22.4), the basal texture is obvio...

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Abstract

The invention belongs to the technical field of metal materials and plastic processing, and particularly relates to a method for preparing a magnesium-based composite board through asymmetric deformation processing and the magnesium-based composite board. The method comprises the steps that (1) a magnesium board and an aluminum board are subjected to heat preservation treatment at different temperatures, so that the temperature of the magnesium board is higher than that of the aluminum board, and the temperature difference between the magnesium board and the aluminum board ranges from 160 DEG C to 200 DEG C; (2) stacking and fixing in an aluminum / magnesium / aluminum sequence, and then carrying out single-pass rolling forming; and (3) annealing treatment is carried out at the temperature of 150-300 DEG C. On one hand, a temperature field within a certain range can be formed at the interface of the magnesium plate and the aluminum plate, the deformation resistance difference between the magnesium plate and the aluminum plate is reduced, the magnesium plate and the aluminum plate obtain similar plastic deformation within the respective temperature ranges, and therefore the plastic forming capacity of the magnesium-based composite plate is improved; on the other hand, the technological process is shortened, the grain size of the composite board is refined, the mechanical property of the composite board is improved, and the interface bonding strength is improved.

Description

technical field [0001] The invention belongs to the technical field of metal materials and plastic processing, and in particular relates to a method for preparing a magnesium-based composite plate by asymmetric deformation processing and a magnesium-based composite plate. Background technique [0002] Magnesium alloys are lightweight materials with the most potential applications. They are extremely rich in resources, have high specific strength, are environmentally friendly, and have good damping properties, electromagnetic shielding properties, and biocompatibility. They have been used in automobiles, rail transit, electronic information, etc. , general tools, aerospace, national defense and other fields have been applied on a large scale, resulting in a good lightweight effect and significant energy saving and emission reduction effects, showing broad development and application prospects. [0003] Due to the close-packed hexagonal crystal structure of magnesium alloys, f...

Claims

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Application Information

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IPC IPC(8): B21B1/38B21B37/30B21B37/28B21B38/12C21D1/26
CPCB21B1/38B21B37/30B21B37/28B21B38/12C21D1/26
Inventor 冯波冯晓伟何佳珍郑开宏王娟潘复生
Owner GUANGDONG INST OF NEW MATERIALS
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