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Magnesium-base layer-shaped composite material and its composite casting preparation method

A composite material and composite casting technology, applied in metal layered products, chemical instruments and methods, metal material coating technology, etc., can solve the problems of poor comprehensive mechanical properties, corrosion damage of magnesium alloys, etc. Variety, the effect of excellent comprehensive performance

Inactive Publication Date: 2008-01-16
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a multi-functional magnesium-based layered composite material and its composite casting preparation method to solve the problems of severe corrosion damage and poor comprehensive mechanical properties of magnesium alloys in humid air environments or chloride ion environments.

Method used

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  • Magnesium-base layer-shaped composite material and its composite casting preparation method
  • Magnesium-base layer-shaped composite material and its composite casting preparation method
  • Magnesium-base layer-shaped composite material and its composite casting preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0051] In this example 1, the design material: AZ31 magnesium alloy / pure aluminum layered composite material, the thickness of the AZ31 magnesium alloy layer is 18mm, the thickness of the pure aluminum layer is 12mm, and the interface contact area is 100×60mm 2 .

[0052] New material design principles: As a lightweight engineering material, magnesium alloys are weaker in strength and plasticity than aluminum alloys. In addition, most commercial magnesium alloys have poor corrosion resistance, while aluminum alloys naturally form a dense oxide film, which has excellent corrosion resistance and self-healing function. Therefore, magnesium / aluminum layered composites can greatly solve the corrosion problem of magnesium alloys. By preparing the magnesium / aluminum layered composite material, the advantages of the magnesium alloy and the aluminum alloy can be combined to meet the needs of more occasions and expand the application of the magnesium alloy.

[0053] Preparation techno...

Embodiment 2

[0065] The difference from Example 1 is:

[0066] In Example 2, the design material is AZ91 magnesium alloy / pure Cu layered composite material, the thickness of the AZ91 magnesium alloy layer is 100mm, the thickness of the pure copper layer is 3mm, and the interface contact area is 80×60mm 2 .

[0067] New material design principle: Combining the light weight of magnesium alloy and the excellent electrical and thermal conductivity of copper.

[0068] Preparation technology: liquid / solid composite metal mold gravity casting, the specific operation steps are as follows:

[0069] I), alloy composition:

[0070] Alloy

Grade

Element content (nominal weight %)

Magnesium (Mg)

Aluminum (Al)

Zinc (Zn)

Manganese (Mn)

Copper (Cu)

AZ91

margin

9

1

0.3

0

Cu

0

0

0

0

100

[0071] II), the specific steps of liquid / solid composite casting:

[0072] 1) Pre-...

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Abstract

The invention relates to mg-based materials and a making method thereof, in particular to novel multifunctional mg-based laminated composite materials and the making method thereof, solving the problem that magnesium alloy is easy to rust in humid air or in the environment with chloridion, which results in poor comprehensive mechanical property. The technique proposal of the invention is that: based on the arrangement of gradient materials mixing, composite materials with different composition and different property are compounded to one or two sides of a magnesium piece or a magnesium alloy piece and the layers are metallurgically combined. The mg-based laminated composite materials made with the method have good comprehensive property and can meet the demands of different situations. Based on the compounding and casting technique of the invention, with different making methods, different metallurgically bonded mg-based laminated composite materials with compact interface can be made. The invention provides a novel method to produce new mg-based materials, suitable for the compounding of magnesium, magnesium alloy and other metal materials, such as aluminium, titanium, cuprum, zinc, nickel and steel, expanding the variety of mg-based materials and boosting the application of magnesium alloy.

Description

technical field [0001] The invention relates to a new magnesium-based material and its preparation technology, in particular to a novel multifunctional magnesium-based layered composite material and a preparation method for composite casting thereof. The invention provides a new way to prepare new magnesium-based materials, which is prepared by a casting method and expands the types of magnesium-based materials. Background technique [0002] As the lightest industrial metal structure material, magnesium alloy has many characteristics such as high specific strength, specific stiffness, excellent damping performance, etc. Its products are widely used in aviation, aerospace, automobile and 3C product (computer, communication, consumer electronics) manufacturing industries The field of application is becoming more and more extensive. In recent years, due to the increasingly urgent demand for automobile weight reduction, the low density of magnesium alloys has made it extremely ...

Claims

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Application Information

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IPC IPC(8): B32B15/01C23C30/00B22D19/00C22F1/06C22F1/02
Inventor 高磊陈荣石韩恩厚
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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