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Composite material and preparation method thereof

A composite material and plate technology, applied in metal rolling and other directions, can solve the problems of low mechanical properties of plates, insufficient surface coloring ability, poor corrosion resistance, etc., and achieve improved mechanical properties, excellent comprehensive mechanical properties, and good deformation consistency. Effect

Pending Publication Date: 2022-03-25
CHANGSHA ADVANCED MATERIALS IND RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the present invention provides a method for preparing magnesium / aluminum composite materials, which successfully prepares magnesium / aluminum composite materials with excellent bonding properties and mechanical properties, and solves the problems of low mechanical properties, poor corrosion resistance and The problem of insufficient surface coloring ability

Method used

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  • Composite material and preparation method thereof
  • Composite material and preparation method thereof
  • Composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0055] (1) Material preparation: Prepare two 5052 aluminum alloy and AZ31B magnesium alloy cast rods with a diameter of 300mm and a length of 405mm, and turn them to a diameter of 296mm and a length of 400mm; figure 2 The shown arc-shaped structure that can be concave-convex matched with each other, wherein the vertical distance d between the protrusion and the depression is 130mm;

[0056] (2) Surface polishing: polish the surface of the prepared magnesium alloy and aluminum alloy with sandpaper, remove the surface oxide black skin and wire cutting marks, after all the surface is polished, clean it with tap water, rinse off the surface grinding powder, and then air dry;

[0057] (3) Assembly combination: Combine the cleaned magnesium alloy and aluminum alloy according to the shape of the cylinder to make the two closely fit, and then use a hammer to hit the joint with force, and the joint will be deformed and have a certain binding force. , so that the two are not easy to fa...

Embodiment 2

[0063] (1) Material preparation: Prepare two cast rods of 6061 aluminum alloy and AZ40M magnesium alloy with a diameter of 300mm and a length of 405mm, and turn them to a diameter of 296mm and a length of 400mm; figure 2 The arc-shaped structure shown, wherein the vertical distance d between the protrusion and the depression is 120mm;

[0064] (2) Surface polishing: polish the surface of the prepared magnesium alloy and aluminum alloy with sandpaper, remove the surface oxide black skin and wire cutting marks, after all the surface is polished, clean with alcohol, rinse off the surface grinding powder, and then air dry;

[0065] (3) Assembly combination: Combine the cleaned magnesium alloy and aluminum alloy according to the shape of the cylinder to make the two closely fit, and then use a hammer to hit the joint with force, and the joint will be deformed and have a certain binding force. , so that the two are not easy to fall off;

[0066] (4) Place the assembled composite m...

Embodiment 3

[0071] (1) Material preparation: Prepare two 5052 aluminum alloy and AZ31B magnesium alloy cast rods with a diameter of 300mm and a length of 405mm, and turn them to a diameter of 296mm and a length of 400mm; image 3 The arc-shaped structure shown, wherein the vertical distance d between the protrusion and the depression is 130mm;

[0072] (2) Surface polishing: polish the surface of the prepared magnesium alloy and aluminum alloy with sandpaper, remove the surface oxide black skin and wire cutting marks, after all the surface is polished, clean it with tap water, rinse off the surface grinding powder, and then air dry;

[0073] (3) Assembly combination: Combine the cleaned magnesium alloy and aluminum alloy according to the shape of the cylinder to make the two closely fit, and then pressurize with a hydraulic press, the reduction amount is 1mm, and deformation occurs at the joint. A certain binding force makes the two not easy to fall off;

[0074] (4) Place the assembled ...

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Abstract

The invention provides a preparation method of a magnesium-aluminum composite material, which comprises the following steps of: respectively processing a magnesium alloy and an aluminum alloy into shapes of which at least one surfaces can be matched with each other in a concave-convex manner, mutually assembling the surfaces of the magnesium alloy and the aluminum alloy which can be matched with each other in the concave-convex manner to obtain an extrusion blank, and preheating and extruding the assembled extrusion blank to obtain a magnesium-aluminum double-layer plate, and finally, the magnesium alloy layers in the magnesium-aluminum double-layer plate are oppositely arranged and stacked, rolling is conducted, and the aluminum-magnesium-aluminum three-layer composite material is obtained. The magnesium / aluminum composite material with excellent bonding performance and mechanical performance is successfully prepared, and the problems that a single-component magnesium alloy plate is low in mechanical performance, poor in corrosion resistance and insufficient in surface coloring ability are solved.

Description

technical field [0001] The invention relates to the field of light alloy materials, and more specifically relates to a magnesium alloy, an aluminum alloy composite material and a preparation method thereof. [0002] technical background [0003] Magnesium and its alloys have the advantages of high specific strength and stiffness, good thermal conductivity, excellent electromagnetic shielding and damping performance, and are the lightest metal structural materials in practical applications. Their density is only 2 / 3 of aluminum alloy and 1 of steel. / 4, is an ideal lightweight structural material. This remarkable low-density feature makes it have a very broad market in aerospace, automotive, rail transportation, 3C and other fields. [0004] Although magnesium alloy has a significant light weight advantage, the electrode potential of pure magnesium is low, the oxide film on the surface is loose and porous, resulting in poor corrosion resistance, and compared with other metals,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/38B21B3/00
CPCB21B1/38B21B3/00B21B2001/386B21B2003/001
Inventor 康心锴周承伟曾钢熊雯瑛刘海平
Owner CHANGSHA ADVANCED MATERIALS IND RES INST CO LTD
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