High-strength magnesium alloy and preparation method thereof

A magnesium alloy, high-strength technology, applied in the field of non-ferrous metal magnesium alloy preparation and application, can solve the problems of magnesium-aluminum alloy application limitation, inability to greatly improve the strength, toughness, corrosion resistance, low yield and other problems of magnesium-aluminum alloy

Inactive Publication Date: 2008-02-06
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to take advantage of the advantages of aluminum elements and overcome the defects of aluminum elements, some use die-casting, hot rolling, and forging methods to improve the mechanical properties of magnesium-alum

Method used

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

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[0100] The present invention will be further explained below in conjunction with the drawings:

[0101] Figure 1 shows a flow chart of the preparation process, which must be carried out in strict accordance with the preparation process and operated in order.

[0102] The combination ratio of chemical substances and materials required for preparation is determined by calculation according to the preset amount, in grams, milliliters, centimeters 3 As the unit of measurement, when it is industrialized, it is measured in kilograms, liters, and meters 3 As a unit.

[0103] The mass ratio of magnesium, aluminum, zinc, and neodymium required for preparation is 82:15:2:1, and aluminum accounts for 15%. Due to the abundant aluminum resources, low price and low density, the weight gain of the alloy caused by aluminum alloying The negative impact is relatively light, and it belongs to the same non-ferrous metal as magnesium, and its melting point is close. It is easy to be chemically matched...

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Abstract

The present invention relates to a high intensity magnesium alloy and the preparation method. Magnesium, aluminum, zinc and neodymium are adopted as raw materials, which are melted in a melting furnace, under the protection of the mixed gases, and are melted down at the temperature of 720 plus or minus 10 degrees Celsius system, magnesium- neodymium alloy is added at the temperature of 780 plus or minus 10 degrees Celsius system, refined and the heat is preserved at the temperature of 740 plus or minus 10 degrees Celsius system and then the magnesium-aluminum-zinc-neodymium melt is obtained. When the temperature is lowered to 680-700 degrees Celsius system, the magnesium-aluminum-zinc-neodymium melt is discharged and cut into shapes after being moulded and cooled and then made into high intensity aluminum-magnesium alloy ingots after an 8-channel equal channel rotor angle pinch. The raw material mixture ratio of magnesium, aluminum, zinc and neodymium is 82 to 15 to 2 to 1 and aluminum makes up 15 percent. The aluminum material is abundant in resource, low in price and more economical and the lanthanon neodymium can change the metallurgical structure and mechanical property. The method has a short process flow and a slight pollution to the environment. The tensile strength, yield strength and elongation of the magnesium alloy ingots can be increased by 147.4 percent, 210.6 percent and 448.3 percent respectively. The metallurgical structure is compact and even and the average crystal grain size is less than or equal to 2 micrometers.

Description

technical field [0001] The invention relates to a high-strength magnesium alloy and a preparation method thereof, belonging to the technical field of preparation and application of nonferrous metal magnesium alloys. Background technique [0002] Magnesium alloy is the lightest metal material. It has the advantages of low density, high specific strength and specific stiffness, good thermal and electrical conductivity, damping and vibration reduction, electromagnetic shielding, easy processing and molding, and easy recycling of waste materials. It is used in automobiles, electronic communications, and aerospace. It has important application value in the fields of national defense and military affairs. [0003] Magnesium alloys also have their disadvantages in performance, such as wide crystallization temperature intervals, easy to form solidification shrinkage distribution in the casting section, reducing the strength and toughness of the alloy, magnesium alloy has a close-pac...

Claims

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Application Information

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IPC IPC(8): C22C23/02C22C1/03C22F1/06
Inventor 梁伟王红霞韩富银赵兴国边丽萍赵琦薛晋波李忠磊王顺旗陈克华
Owner TAIYUAN UNIV OF TECH
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