Magnesium-aluminum layered composite board and preparation method thereof

A composite plate and composite plate technology, applied in the direction of manufacturing tools, metal rolling, metal rolling, etc., to achieve the effect of refining grain size, improving strength and plastic forming ability, and improving mechanical properties

Pending Publication Date: 2022-05-31
GUANGDONG INST OF NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the preparation of magnesium-aluminum composite panels without intermetallic compounds at the interface at medium and high temperatures (350-500 °C).

Method used

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  • Magnesium-aluminum layered composite board and preparation method thereof
  • Magnesium-aluminum layered composite board and preparation method thereof
  • Magnesium-aluminum layered composite board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment provides a method for preparing a magnesium-aluminum layered composite board, including:

[0039] (1) Magnesium alloy and aluminum alloy are smelted in separate furnaces at the same time, the melting temperature of magnesium alloy is 700°C, and the melting temperature of aluminum alloy is 735°C.

[0040] (2) First pour the molten aluminum alloy into the drum-type centrifugal casting metal mold at a pouring temperature of 660°C. After the molten liquid is cooled and solidified, the surface is treated to obtain a nickel alloy coating. The thickness of the coating is 10 μm. Immediately after the surface treatment, the molten magnesium alloy is poured, the pouring temperature is 670°C, and the composite tube blank is obtained after cooling.

[0041] (3) Open along the axial direction of the composite tube blank, and level the unfolded composite tube blank by a leveler.

[0042] (4) The flattened composite tube billet is first rolled through a rolling mill,...

Embodiment 2

[0046] This embodiment provides a method for preparing a magnesium-aluminum layered composite board, including:

[0047] (1) Magnesium alloy and aluminum alloy are smelted in separate furnaces at the same time, the melting temperature of magnesium alloy is 715°C, and the melting temperature of aluminum alloy is 745°C.

[0048] (2) First pour the molten aluminum alloy into the drum-type centrifugal casting metal mold at a pouring temperature of 660°C. After the molten liquid is cooled and solidified, the surface is treated to obtain a nickel alloy coating. The thickness of the coating is 5 μm. Immediately after the surface treatment, the molten magnesium alloy is poured, the pouring temperature is 670°C, and the composite tube blank is obtained after cooling.

[0049] (3) Open along the axial direction of the composite tube blank, and level the unfolded composite tube blank by a leveler.

[0050] (4) Carry out the initial rolling of the flattened composite tube billet through...

Embodiment 3

[0054] This embodiment provides a method for preparing a magnesium-aluminum layered composite board, including:

[0055] (1) Magnesium alloy and aluminum alloy are smelted in separate furnaces at the same time, the melting temperature of magnesium alloy is 715°C, and the melting temperature of aluminum alloy is 730°C.

[0056] (2) First pour the molten aluminum alloy into the drum-type centrifugal casting metal mold at a pouring temperature of 660°C. After the molten liquid is cooled and solidified, the surface is treated to obtain a nickel alloy coating. The thickness of the coating is 10 μm. Immediately after the surface treatment, the molten magnesium alloy is poured, the pouring temperature is 680°C, and the composite tube blank is obtained after cooling.

[0057] (3) Open along the axial direction of the composite tube blank, and level the unfolded composite tube blank by a leveler.

[0058] (4) The flattened composite tube billet is rolled for the first time through a ...

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Abstract

The invention relates to the field of layered composite materials, in particular to a magnesium-aluminum layered composite plate and a preparation method thereof. The preparation method of the magnesium-aluminum layered composite plate comprises the following steps: preparing a composite pipe blank by adopting centrifugal casting; the composite pipe blank is pretreated to form a composite board; two or more composite boards with the same size are stacked and rolled according to the mode that aluminum layers and magnesium layers are alternately arranged at intervals, the magnesium-aluminum layered composite board is obtained, and a nickel layer is arranged between every two adjacent composite boards. And centrifugal casting is adopted, so that the grain size of the composite plate is refined, the strength and the plastic forming capacity are improved, and subsequent rolling deformation is facilitated. And a nickel layer is arranged between the composite plates before ply rolling, so that a large number of hard and brittle intermetallic compounds are prevented from being generated at the interface of the composite plates at the medium-high temperature (350-500 DEG C), and the mechanical property of the magnesium-aluminum composite plate is improved.

Description

technical field [0001] The invention relates to the field of layered composite materials, in particular to a magnesium-aluminum layered composite board and a preparation method thereof. Background technique [0002] Magnesium alloy is the lightweight material with the most application potential. It has many advantages such as high specific strength, high specific stiffness, excellent electromagnetic shielding, and good shock and noise reduction performance. It is known as "21st century green engineering metal". However, magnesium alloy plasticity Problems such as low formability, insufficient stiffness, poor corrosion resistance, and low absolute strength greatly limit its large-scale application. Aluminum alloy is currently the most widely used non-ferrous metal structural material in industrial production. It has the characteristics of low density, good formability, high strength, and excellent corrosion resistance. Magnesium-aluminum composite materials have both the adv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/02B21B1/38B21B47/00
CPCB21C37/02B21B1/38B21B47/00B21B2001/386B21B2261/20B21B2275/02
Inventor 冯波冯晓伟何佳珍郑开宏罗铁钢王娟潘复生
Owner GUANGDONG INST OF NEW MATERIALS
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