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High-strength flame-retardant magnesium alloy and preparation method thereof

A magnesium alloy, high-strength technology, applied in the field of magnesium alloys, can solve the problems of poor mechanical properties and flame retardant properties, poor mechanical properties and flame retardant properties of magnesium alloys, and achieve good flame retardant properties, improved mechanical properties, and good room temperature. Effect

Active Publication Date: 2019-01-29
HENAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a high-strength flame-retardant magnesium alloy to solve the problem of poor mechanical properties and flame-retardant properties of existing magnesium alloys
[0006] The second object of the present invention is to provide a method for preparing a high-strength flame-retardant magnesium alloy to solve the problem of poor mechanical properties and flame-retardant properties of magnesium alloys prepared by existing methods

Method used

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  • High-strength flame-retardant magnesium alloy and preparation method thereof

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Embodiment 1

[0022] Example 1 of the high-strength flame-retardant magnesium alloy of the present invention consists of the following components in mass percentage: Nd 6.0%, Ce 3.5%, Al 2.2%, Si 0.8%, Ag 1.8%, Nb 0.8%, and the balance is Mg and unavoidable impurities, the total mass fraction of impurity elements Fe, Cu and Ni is less than 0.2%.

Embodiment 2

[0023] Example 2 of the high-strength flame-retardant magnesium alloy of the present invention consists of the following components in mass percentage: Nd 6.2%, Ce 3.2%, Al 2.5%, Si 0.5%, Ag 1.5%, Nb 0.9%, and the balance is Mg and unavoidable impurities, the total mass fraction of impurity elements Fe, Cu and Ni is less than 0.2%.

Embodiment 3

[0024] Example 3 of the high-strength flame-retardant magnesium alloy of the present invention consists of the following components in mass percentage: Nd 6.3%, Ce 3.2%, Al 2.0%, Si 0.6%, Ag 2.0%, Nb 0.9%, and the balance is Mg and unavoidable impurities, the total mass fraction of impurity elements Fe, Cu and Ni is less than 0.2%.

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Abstract

The invention relates to a high-strength flame-retardant magnesium alloy and a preparation method thereof. The high-strength flame-retardant magnesium alloy is composed of the following components of,in percentage by mass, 5.0-7.0% of Nd, 3.0-3.5% of Ce, 2.0-2.5% of Al, 0.5-0.8% of Si, 1.5-2.0% of Ag, 0.8-1.0% of Nb and the balance Mg and inevitable impurities. According to the high-strength flame-retardant magnesium alloy, different components are reasonably matched, the Nd, Ce, Al, Si, Ag and Nb-containing flame-retardant magnesium alloy is prepared by an alloying method, the ignition pointof the magnesium alloy is about 800 DEG C, the flame retardant performance is good, meanwhile, the tensile strength of the magnesium alloy is about 280 Mpa, the yield strength at room temperature isabout 200 Mpa, the tensile strength of 200 DEG C is about 200 Mpa, the yield strength at 200 DEG C is about 170 Mpa, and good room temperature and high-temperature mechanical properties is showed.

Description

technical field [0001] The invention belongs to the field of magnesium alloys, and in particular relates to a high-strength flame-retardant magnesium alloy and a preparation method thereof. Background technique [0002] In the existing metal structure material system, magnesium alloy has high specific strength and specific stiffness, excellent casting performance and high damping and anti-vibration performance, easy to recycle, and has environmental protection characteristics, so it is widely used in aerospace, electronic communication and automobile industries. And other industries have a very broad application prospects, has become one of the most potential metal structure materials. [0003] The application of magnesium alloys mainly has the following problems: First, the strength and toughness of magnesium alloys are not ideal, which limits their widespread use. The second is that magnesium alloys are very flammable, and oxidative combustion is very easy to occur during...

Claims

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Application Information

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IPC IPC(8): C22C23/06C22C1/03C22F1/06
CPCC22C1/03C22C23/06C22F1/002C22F1/06
Inventor 陈君李全安张清朱利敏陈晓亚戚尧史浩鹏
Owner HENAN UNIV OF SCI & TECH
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