High-elasticity-modulus magnesium alloy and preparation method thereof

A technology for magnesium alloys and intermediate alloys, applied in the field of magnesium alloys and their preparation, can solve the problems of poor resistance to elastic deformation, low elastic modulus of alloys, and low elastic modulus, and achieve good plasticity, high elastic modulus, and processing Create easy effects

Inactive Publication Date: 2014-09-17
BAIC MOTOR CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unfortunately, Mg in Mg-Al, Mg-Zn and Mg-Al-Zn alloys 17 Al 12 (47.4GPa) and MgZn 2 (44.8GPa) and other phases have relatively low elastic modulus, so that the elastic modulus of the alloy is also relatively low, only 40-45GPa, which eventually leads to poor elastic deformation resistance, which cannot meet the requirements of the automobile manufacturing industry and engineering fields for lightweight Demand for High Strength and High Elastic Modulus Magnesium Alloy Materials

Method used

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  • High-elasticity-modulus magnesium alloy and preparation method thereof
  • High-elasticity-modulus magnesium alloy and preparation method thereof
  • High-elasticity-modulus magnesium alloy and preparation method thereof

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preparation example Construction

[0072] According to the above-mentioned components of magnesium alloy preparation, the magnesium ingot is heated to 700-720°C under the protective atmosphere of Ar gas. After the magnesium ingot is melted, silicon is added into the magnesium melt and stirred. After the silicon block is completely dissolved, Raise the temperature to 730-740°C, then add the rest of the components, stir, refine and remove slag, and cast to obtain ingots.

[0073] In the method, Mg is added in the form of pure magnesium, and Si is added in the form of pure silicon, and the silicon is a silicon block with a particle size of 1.0 to 2.0 cm; Zinc is added to the magnesium melt, and the rest of the components are added in the form of magnesium-based master alloys.

[0074] In the method, the complete melting of the magnesium-based master alloy is controlled until the casting time is less than or equal to 3 minutes,

[0075] The method also includes subjecting the ingot to homogenization treatment at 4...

Embodiment

[0077] The percentages described in the following examples are all percentages by weight unless otherwise specified.

[0078] The present invention provides the proportioning examples of different components shown in Tables 1-4. The impurity content in the components is not more than 0.1%, except for the components listed in the table, the rest is Mg.

[0079] In the embodiment of the present invention, according to Table 1-Table 4 (X is selected from aluminum (Al), titanium (Ti), silver (Ag), zirconium (Zr), calcium (Ca), scandium (Sc), lanthanum (La) , cerium (Ce), europium (Eu), praseodymium (Pr), promethium (Pm), samarium (Sm) any one of the magnesium alloy component distribution ratio) to take each component respectively, prepare magnesium alloy respectively, specifically The preparation method is as follows:

[0080] 1. Take each component separately according to the designed high elastic modulus magnesium alloy component distribution ratio, among which: Mg is added in ...

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Abstract

The invention discloses a high-elasticity-modulus magnesium alloy and a preparation method thereof. The magnesium alloy comprises the following components in percentage by weight: 1.0-10.0% of aluminum and/or zinc, 1.0-15.0% of silicon and/or germanium, and the balance of magnesium. The preparation method comprises the following steps: heating and melting pure magnesium under the protection atmosphere, adding pure silicon into a pure magnesium melt, stirring and dissolving, warming, adding other components and stirring, controlling intermediate alloy to be completely molten until the pouring time is less than or equal to 3 minutes, refining and drossing, pouring to obtain an ingot. The high-elasticity-modulus magnesium alloy is reasonable in component matching, easy to process and manufacture, and low in price, the prepared high-elasticity-modulus magnesium alloy has high room-temperature intensity and elasticity modulus and good plasticity and is suitable for industrial production, and the comprehensive performance is obviously higher than that of the existing common magnesium alloy.

Description

technical field [0001] The invention relates to the field of nonferrous metal materials and processing thereof, in particular to a magnesium alloy and a preparation method thereof. Background technique [0002] In order to achieve the purpose of reducing weight and increasing efficiency, the demand for high-performance lightweight materials in the automotive industry is growing rapidly. Magnesium alloy materials, as the lightest metal structural materials that can be industrially produced, have received special attention. In recent years, the speed of aerospace and transportation vehicles is getting higher and higher, and the required power is increasing, which puts forward higher requirements for the heat resistance and elastic deformation resistance of materials. Alloying is an effective means to improve the mechanical properties of alloys. [0003] According to the mixing law, the elastic modulus of a multiphase alloy is determined by the elastic modulus and its volume f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C23/02C22C23/04C22C1/03C22F1/06
Inventor 胡继龙
Owner BAIC MOTOR CORP LTD
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