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A method for improving the distribution of sic particles in magnesium matrix composites under the action of a low-voltage pulsed magnetic field

A composite material and low-voltage pulse technology, which is applied in the field of improving the distribution of SiC particles in magnesium-based composite materials, can solve the problems of less research and achieve the effect of simple process, low cost and investment, and easy control

Inactive Publication Date: 2019-01-08
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there have been some achievements in the field of pulsed magnetic fields in the field of alloys, but there are still very few studies on composite materials. Most of them are about Al-based in-situ synthesis composite materials, and there are few reports about magnesium-based composite materials.

Method used

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  • A method for improving the distribution of sic particles in magnesium matrix composites under the action of a low-voltage pulsed magnetic field
  • A method for improving the distribution of sic particles in magnesium matrix composites under the action of a low-voltage pulsed magnetic field
  • A method for improving the distribution of sic particles in magnesium matrix composites under the action of a low-voltage pulsed magnetic field

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Experimental program
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Effect test

Embodiment 1

[0044] First, SiC particles are added to the magnesium alloy melt, stirred evenly, and then the alloy melt is poured into the mold placed in the pulse magnetic field solidification device, so that the composite material melt is completely solidified under the action of the pulse magnetic field; wherein, the magnetic field voltage is 150V, the frequency is 2.5Hz, the pouring temperature of the melt is 680°C, and the mold preheating temperature is 200°C.

Embodiment 2

[0046] First, SiC particles are added to the magnesium alloy melt, stirred evenly, and then the alloy melt is poured into the mold placed in the pulse magnetic field solidification device, so that the composite material melt is completely solidified under the action of the pulse magnetic field; wherein, the magnetic field voltage is 200V, the frequency is 5Hz, the pouring temperature of the melt is 620°C, and the mold preheating temperature is 600°C.

Embodiment 3

[0048] First, SiC particles are added to the magnesium alloy melt, stirred evenly, and then the alloy melt is poured into the mold placed in the pulse magnetic field solidification device, so that the composite material melt is completely solidified under the action of the pulse magnetic field; wherein, the magnetic field voltage is 250V, the frequency is 10Hz, the pouring temperature of the melt is 650°C, and the mold preheating temperature is 400°C.

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Abstract

The invention discloses a method for improving the distribution of SiC particles in magnesium-based composite materials under the action of a low-voltage pulsed magnetic field. First, SiC particles are added to the magnesium alloy melt, stirred evenly, and then the alloy melt is poured into a pulsed magnetic field. In the mold of the solidification device, the composite material melt is completely solidified under the action of a low-voltage pulsed magnetic field. The advantages of the present invention are: (1) environmental protection, simple process, convenient operation, easy control, low cost and investment, the method only needs to control the strength of the pulse magnetic field and the solidification rate of the alloy; (2) no pollution, pulse The magnetic field does not directly contact the alloy melt, so it will not pollute the melt or the environment.

Description

technical field [0001] The invention relates to a method for improving the distribution of SiC particles in a magnesium-based composite material, in particular to a method for improving the distribution of SiC particles in a magnesium-based composite material under the action of a low-voltage pulsed magnetic field. Background technique [0002] Magnesium-based composites have the advantages of good shock absorption and noise reduction performance, electromagnetic shielding performance, machining performance and good mechanical properties. SiC particles have good wear resistance, dimensional stability, thermal shock resistance and high hardness, and the particle-reinforced composite materials are anisotropic. Among many magnesium-based composite materials, SiC magnesium-based composite materials have good comprehensive mechanical properties. The main reason is that SiC particles have good physical and chemical properties, combined with the high hardness, wear resistance and s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10B22D27/02
Inventor 陈乐平刘勇周全
Owner NANCHANG HANGKONG UNIVERSITY
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