A kind of preparation method of rare earth magnesium alloy composite material

A composite material, a technology of rare earth magnesium, applied in the field of preparation of rare earth magnesium alloy composite materials, can solve the problems of failure to achieve dispersion strengthening, particle agglomeration, etc., and achieve the effect of improving surface wettability, improving wettability, and simple process

Active Publication Date: 2020-06-02
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the reinforcement is directly added to the matrix melt, the particles will agglomerate due to poor wettability, and cannot be well dispersed in the matrix, thus failing to achieve the effect of dispersion strengthening.

Method used

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  • A kind of preparation method of rare earth magnesium alloy composite material
  • A kind of preparation method of rare earth magnesium alloy composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Prepare magnesium ingot as raw material; prepare rare earth magnesium master alloy Mg-Ce alloy; prepare salt flux and reinforcement; salt flux is CeCl 4 ; Reinforcement is rare earth oxide La 2 o 3 Particles; the reinforcement is 2% of the total volume of the raw material; the reinforcement is 5% of the total volume of the salt flux; the mass percentage of rare earth Ce in the rare earth magnesium master alloy and the magnesium ingot is 5%;

[0047] (2) Put the salt flux in a clay crucible, heat it to 773K to make a salt flux melt; add the reinforcement to the salt flux melt, stir to disperse the reinforcement evenly, and make a liquid-solid mixture; stirring speed 150r / min, time 2min; when the reinforcement is added to the salt flux melt, all the reinforcement is added in 3 times, and the amount added each time is less than 50% of the total weight of the reinforcement;

[0048] (3) Pour the liquid-solid mixture into a clay crucible at room temperature, and cool ...

Embodiment 2

[0055] Method is with embodiment 1, and difference is:

[0056] (1) The rare earth magnesium master alloy is Mg-Y alloy; the salt flux is YCl 3 ; Reinforcement is boride ZrB 2 ,;

[0057] (2) The reinforcing body is 0.5% of the total volume of the raw material; the reinforcing body is 1% of the total volume of the salt flux; the mass percentage of the rare earth Y in the rare earth magnesium master alloy and the magnesium ingot is 3%;

[0058] (3) Put the salt flux in a graphite crucible and heat it to 803K to make a salt flux melt; the stirring speed is 140r / min, and the time is 4min; when the reinforcement is added to the salt flux melt, all reinforcements are divided into 4 times join in;

[0059] (4) Pour the liquid-solid mixture into a graphite crucible at normal temperature for cooling;

[0060] (5) Stir after raw material and rare earth magnesium master alloy are melted at 953K;

[0061] (6) After stirring, heat up to 983K and let it stand for 25 minutes; the stirr...

Embodiment 3

[0064] Method is with embodiment 1, and difference is:

[0065] (1) Prepare magnesium ingots and other metal components as raw materials, and other metal components are aluminum ingots and zinc ingots, and aluminum and zinc account for 2% and 3% of the total mass of raw materials respectively; the rare earth magnesium master alloy is Mg-La alloy; the salt flux is LaCl 3 ; The reinforcement is elemental metal Ni;

[0066] (2) The reinforcing body is 30% of the total volume of the raw material; the reinforcing body is 50% of the total volume of the salt flux; the mass percentage of the rare earth La in the rare earth magnesium master alloy and the magnesium ingot is 9%;

[0067] (3) Put the salt flux in a graphite crucible and heat it to 833K to make a salt flux melt; the stirring speed is 130r / min, and the time is 8min; when the reinforcement is added to the salt flux melt, all reinforcements are divided into 5 times join in;

[0068] (4) Pour the liquid-solid mixture into a...

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Abstract

A manufacturing method for a rare-earth magnesium alloy composite material, which is performed by the following steps: (1) preparing a magnesium ingot as a raw material; preparing a rare-earth magnesium intermediate alloy; and preparing a salt flux and a reinforcement; (2) placing the salt flux into a crucible, and heating same to prepare a salt flux melt; adding the reinforcement to the salt flux melt, and stirring to prepare a liquid-solid mixture; (3) pouring the liquid-solid mixture into a crucible at room temperature, and cooling to obtain a precursor; (4) pre-heating an iron crucible, adding the raw material and the rare-earth magnesium intermediate alloy to the iron crucible, melting, and uniformly stirring to form a raw material melt; (5) adding the precursor to the raw material melt, stirring, mixing, and resting at 973-1,023 K; and (6) removing scums, cooling, and casting. The method in the present invention is simple in process, is low in cost, can significantly improve the strength of the rare-earth magnesium alloy composite material, can carry out automatic production, and is significant in the development of rare earth and composite materials.

Description

technical field [0001] The invention belongs to the technical field of metal material preparation, and in particular relates to a preparation method of a rare earth magnesium alloy composite material. Background technique [0002] Magnesium alloy is currently the lightest metal structure material, with advantages of low density, high specific strength, high specific stiffness, high shock absorption, easy processing, easy recycling, etc. It has great potential in aerospace, military industry, electronic communication, transportation and other fields However, ordinary magnesium alloys have problems such as low strength, poor heat resistance and corrosion resistance. [0003] Most rare earth elements have a large solid solubility in magnesium, and have good solid solution strengthening and precipitation strengthening effects; they can effectively improve the microstructure and microstructure of the alloy, improve the mechanical properties of the alloy at room temperature and hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10C22C1/03C22C1/06C22C23/06C22C47/08C22C49/04
CPCC22C1/06C22C1/1036C22C23/06C22C47/08C22C49/04
Inventor 乐启炽任良李小强周伟阳赵大志程春龙
Owner NORTHEASTERN UNIV LIAONING
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