High-performance magnesium alloy and preparation method thereof

A magnesium alloy, high-performance technology, applied in the field of high-performance magnesium-aluminum-calcium-manganese-zinc alloy and its preparation, can solve the problems of poor fluidity of alloy liquid, coarse alloy grains, and expansion of alloy crystallization temperature range, etc., to achieve The effect of improving mechanical properties, simple processing technology, and easy industrial production

Inactive Publication Date: 2019-01-25
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the Zn content is too high, it will easily lead to the expansion of the crystallization temperature range of the alloy, the poor fluidity of the alloy liquid, the formation of casting defects, and the coarse grains of the alloy.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The high-performance magnesium alloy of this embodiment contains the following components by weight percentage: 1wt% Al, 0.3wt% Ca, 0.3wt% Mn, 0wt% Zn, and the rest Mg. (wt% refers to the percentage of the weight of each component to the target total weight, which is the sum of the weights of Mg, Al, Zn and various master alloys).

[0032] The entire smelting process of this high-performance magnesium alloy is carried out under the Ar environment, and the preparation method is as follows:

[0033] 1) Ingredients: Mg, Al, Mg-Ca master alloy (Ca accounts for 0.3% in the total weight of the target alloy), Mg-Mn master alloy (Mn accounts for 0.3% in the total weight of the target alloy), and Zn are configured by weight percentage ;

[0034] 2) Feeding: put all the configured raw materials in the melting device, and seal the melting furnace;

[0035] 3) Melting: After closing the melting furnace, vacuumize to below -98.750KPa, then pass in argon until the pressure in the f...

Embodiment 2

[0040] The high-performance magnesium alloy of this embodiment contains the following components by weight percentage: 1wt% Al, 0.3wt% Ca, 0.3wt% Mn, 0.2wt% Zn, and the rest Mg. (wt% refers to the percentage of the weight of each component to the total target weight, which is the sum of the weight of Mg, Al, Zn and various master alloys), where Al is aluminum ingots, Mg is magnesium ingots, and Zn is zinc Ingots, the purity is above 99.99%.

[0041] The entire smelting process of this high-performance magnesium alloy is carried out under the Ar environment, and the preparation method is as follows:

[0042] 1) Ingredients: Mg, Al, Mg-Ca master alloy (Ca accounts for 0.3% in the total weight of the target alloy), Mg-Mn master alloy (Mn accounts for 0.3% in the total weight of the target alloy), and Zn to remove the scale, Configured by weight percentage;

[0043] 2) Feeding: put all the configured raw materials in the melting device, and seal the melting furnace;

[0044] 3)...

Embodiment 3

[0049] The high-performance magnesium alloy of this embodiment contains the following components by weight percentage: 1wt% Al, 0.3wt% Ca, 0.3wt% Mn, 0.4wt% Zn, and the rest Mg. (wt% refers to the percentage of the weight of each component to the target total weight, which is the sum of the weights of Mg, Al, Zn and various master alloys).

[0050] The entire smelting process of this high-performance magnesium alloy is carried out under the Ar environment, and the preparation method is as follows:

[0051] 1) Ingredients: Mg, Al, Mg-Ca master alloy (Ca accounts for 0.3% in the total weight of the target alloy), Mg-Mn master alloy (Mn accounts for 0.3% in the total weight of the target alloy), and Zn to remove the scale, Configured by weight percentage;

[0052] 2) Feeding: put all the configured raw materials in the melting device, and seal the melting furnace;

[0053] 3) Melting: After closing the melting furnace, vacuumize to below -98.750KPa, then pass in argon until the...

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Abstract

The invention provides high-performance magnesium alloy and a preparation method thereof. The alloy comprises the specific ingredients in percentage by weight: 1wt% of Al, 0.3wt% of Ca, 0.3wt% of Mn,0 to 0.6wt% of Zn and the balance of Mg. The preparation method comprises the steps of preparing all elements according to an alloy weight ratio, and carrying out vacuum smelting, pouring, homogenizing treatment and plastic deformation, thereby obtaining the alloy. Through adding a certain weight of element zinc into magnesium-aluminum-calcium-manganese alloy, an alloy structure can be refined, astrengthening phase with high-temperature stability is formed, the action of strengthening the alloy is exerted, and the aim of improving properties of the material is achieved.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and relates to a magnesium alloy and a preparation method thereof, in particular to a high-performance magnesium-aluminum-calcium-manganese-zinc alloy and a preparation method thereof. Background technique [0002] Magnesium (Mg) alloy has the advantages of low density, wide range of sources, high specific strength and specific stiffness, etc. It has great potential for development and application, and is known as "green engineering material in the 21st century". Fine-grain strengthening is an important means to improve the comprehensive performance of magnesium alloys, mainly because grain refinement can increase or improve the properties of grain boundaries, and use the hindrance of grain boundaries to dislocations to improve its strength. According to the Hall-Petch formula, the alloy’s Plasticity is inversely proportional to grain size, as the grain size decreases, the plasticity of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02C22C1/03C22F1/06
CPCC22C23/02C22C1/03C22F1/06
Inventor 卢雅琳宋雷鹏张扬李兴成徐文婷陈晓阳丛孟启
Owner JIANGSU UNIV OF TECH
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