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High-temperature-resistant and corrosion-resistant magnesium alloy and preparation process thereof

A preparation process and technology for magnesium alloys, applied in the field of alloy production and processing, can solve problems such as poor high temperature stability, application limitations, and poor corrosion resistance.

Inactive Publication Date: 2019-04-16
贵州航天风华精密设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It can be seen that while magnesium alloy has outstanding advantages, it also has obvious disadvantages, such as poor high temperature stability, poor creep resistance, and poor corrosion resistance. Therefore, its application is limited

Method used

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  • High-temperature-resistant and corrosion-resistant magnesium alloy and preparation process thereof
  • High-temperature-resistant and corrosion-resistant magnesium alloy and preparation process thereof
  • High-temperature-resistant and corrosion-resistant magnesium alloy and preparation process thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] A high-temperature-resistant and corrosion-resistant magnesium alloy, the magnesium alloy is mainly composed of Mg, Mo, Zn, Zr, Sc, W and rare earth elements, and the mass percentages of each component are as follows: 4.5% Mo, 6.6% Zn, 2.3% Zr, 0.1% Sc, 0.1% W, 1.2% rare earth elements, the balance is Mg and unavoidable impurities; the unavoidable impurities are Ca, Al, etc., the total amount <0.05%.

[0042] Further, the rare earth elements are Ce, La, Ho, Yb, Sm, Tm, Gd, Y, Nd.

[0043] A preparation process for a high-temperature-resistant and corrosion-resistant magnesium alloy, comprising the following steps:

[0044] (1) Melting: Under the condition of continuous feeding of protective gas, first preheat the billet to 200°C, add industrial pure Mg to the preheated container and heat to 200°C to melt, raise the temperature to 700°C, add preheated Rare earth elements heated to 200°C, stirred evenly, and kept at 650°C for 7 hours;

[0045] (2) heat preservation trea...

Embodiment 2

[0051] A high-temperature-resistant and corrosion-resistant magnesium alloy, the magnesium alloy is mainly composed of Mg, Mo, Zn, Zr, Sc, W and rare earth elements, and the mass percentages of each component are as follows: 6.9% Mo, 8.8% Zn, 3.2% Zr, 0.6% Sc, 0.5% W, 1.8% rare earth elements, the balance is Mg and unavoidable impurities; the unavoidable impurities are Ca, Al, etc., the total amount of which is <0.05%.

[0052] Further, the rare earth elements are Ce, La, Sm, Tm, Gd, Dy, Pr, Y, Nd.

[0053] A preparation process for a high-temperature-resistant and corrosion-resistant magnesium alloy, comprising the following steps:

[0054] (1) Melting: Under the condition of continuous feeding of protective gas, first preheat the billet to 200°C, add industrial pure Mg to the preheated container and heat to 220°C to melt, raise the temperature to 750°C, add preheated Rare earth elements heated to 200°C, stirred evenly, and kept at 680°C for 5 hours;

[0055] (2) heat preserv...

Embodiment 3

[0061] A high-temperature-resistant and corrosion-resistant magnesium alloy, the magnesium alloy is mainly composed of Mg, Mo, Zn, Zr, Sc, W and rare earth elements, and the mass percentages of each component are as follows: 4.7% Mo, 6.9% Zn, 2.5% Zr, 0.2% Sc, 0.2% W, 1.3% rare earth elements, the balance is Mg and unavoidable impurities; the unavoidable impurities are Ca, Al, etc., the total amount of which is less than 0.05%.

[0062] Further, the rare earth elements are Ce, La, Eu, Yb, Sm, Tm, Gd, Dy, Y.

[0063] A preparation process for a high-temperature-resistant and corrosion-resistant magnesium alloy, comprising the following steps:

[0064] (1) Melting: Under the condition of continuous feeding of protective gas, first preheat the billet to 200°C, add industrial pure Mg to the preheated container and heat to 205°C to melt, raise the temperature to 710°C, add preheated Rare earth elements heated to 200°C, stirred evenly, and kept at 660°C for 6.5h;

[0065] (2) heat...

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Abstract

The invention discloses a high-temperature-resistant and corrosion-resistant magnesium alloy. The magnesium alloy is mainly prepared from the following components in percentage by mass: 4.5-6.9% of Mo, 6.6-8.8% of Zn, 2.3-3.2% of Zr, 0.1-0.6% of Sc, 0.1-0.5% of W, 1.2-1.8% of rare earth elements, and the balance of Mg and unavoidable impurities; and the unavoidable impurities are Ca, Al and the like, and the total amount of the unavoidable impurities is less than 0.05%. The prepared magnesium alloy has high-temperature resistance, corrosion resistance and good toughness, the tensile strength and the yield strength are also improved, the elongation is also increased, and the performance of the magnesium alloy is improved.

Description

technical field [0001] The invention belongs to the technical field of alloy production and processing, and in particular relates to a high-temperature-resistant and corrosion-resistant magnesium alloy and a preparation process thereof. Background technique [0002] Magnesium alloy has characteristics superior to traditional metal materials such as low density, light specific gravity, high specific strength and specific stiffness, easy recycling, and no pollution. It also has excellent thermal conductivity, good electromagnetic shielding and damping performance, and Excellent cutting performance, it has been increasingly widely used in the fields of automobile industry, electronic communication, aerospace, national defense and military industry, etc., especially plays an important role in realizing lightweight, promoting energy saving and emission reduction, etc., and its annual growth rate of output Magnesium has been up to 25% in recent years and is known as "the green eng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/04C22C1/03C22F1/06
CPCC22C1/03C22C23/04C22F1/06
Inventor 陈寅敖四海于丹
Owner 贵州航天风华精密设备有限公司
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