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A Low-Cost High Plastic Deformation Magnesium Alloy

A wrought magnesium alloy and high plasticity technology, applied in the field of metal materials, can solve the problem that the ductility and yield strength of wrought magnesium alloy cannot meet the load-bearing structure and aerospace parts, etc., and achieve fine and uniform microstructure, energy saving and good plasticity. Effect

Active Publication Date: 2021-01-26
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies existing in the prior art, the purpose of the present invention is to provide a low-cost high-plastic deformation magnesium alloy to solve the problem that the ductility and yield strength of the deformed magnesium alloy cannot meet the requirements of load-bearing structures and aerospace parts, and Avoid using rare earth elements to meet low-cost needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Using pure magnesium ingots, pure aluminum ingots, and magnesium-manganese master alloys as raw materials, perform mechanical grinding, and calculate the ingredients according to the mass percentage of Mn: 1.0%, Al: 0.3%, and the balance is magnesium and unavoidable impurities;

[0022] 2) Preheat pure magnesium, pure aluminum and magnesium-manganese master alloy at 300°C for 30 minutes, then place the pure magnesium ingot in a resistance furnace, in the SF with a volume ratio of 1:99 6 and CO 2 Under the protection of the mixed gas, it is completely melted, and the temperature of the magnesium melt is raised to 720°C. , pour the alloy into a mold preheated to 300°C after heat preservation for 10 minutes, and obtain a magnesium alloy ingot after cooling;

[0023] 3) Machining the magnesium alloy ingot obtained in step 2) to a specified size to obtain a magnesium alloy extrusion billet;

[0024] 4) Preheat the magnesium alloy extrusion billet obtained in step 3) at ...

Embodiment 2

[0026] 1) Using pure magnesium ingots, pure aluminum ingots, and magnesium-manganese master alloys as raw materials, perform mechanical grinding, and calculate the ingredients according to the mass percentage of Mn: 0.5%, Al: 0.5%, and the balance is magnesium and unavoidable impurities;

[0027] 2) Preheat pure magnesium, pure aluminum and magnesium-manganese master alloy at 300°C for 30 minutes, then place the pure magnesium ingot in a resistance furnace, in the SF with a volume ratio of 1:99 6 and CO 2 Under the protection of the mixed gas, it is completely melted, and the temperature of the magnesium melt is raised to 720°C. , pour the alloy into a mold preheated to 300°C after heat preservation for 10 minutes, and obtain a magnesium alloy ingot after cooling;

[0028] 3) Machining the magnesium alloy ingot obtained in step 2) to a specified size to obtain a magnesium alloy extrusion billet;

[0029] 4) Using an extrusion die, preheat the magnesium alloy extrusion billet...

Embodiment 3

[0031]1) Using pure magnesium ingots, pure aluminum ingots, and magnesium-manganese master alloys as raw materials, perform mechanical grinding, and calculate the ingredients according to the mass percentage of Mn: 0.5%, Al: 0.1%, and the balance is magnesium and unavoidable impurities;

[0032] 2) Preheat pure magnesium, pure aluminum and magnesium-manganese master alloy at 300°C for 30 minutes, then place the pure magnesium ingot in a resistance furnace, in the SF with a volume ratio of 1:99 6 and CO 2 Under the protection of the mixed gas, it is completely melted, and the temperature of the magnesium melt is raised to 720°C. , pour the alloy into a mold preheated to 300°C after heat preservation for 10 minutes, and obtain a magnesium alloy ingot after cooling;

[0033] 3) Machining the magnesium alloy ingot obtained in step 2) to a specified size to obtain a magnesium alloy extrusion billet;

[0034] 4) Using an extrusion die, preheat the magnesium alloy extrusion billet ...

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Abstract

The invention discloses a low-cost high-plastic deformation magnesium alloy. The magnesium alloy is composed of Mg, Mn and low-content Al, and the mass percentages of each component are Mn: 0.5-4.0%, Al: 0.1-0.5% , the balance being magnesium and unavoidable impurities. In the Mg‑Al‑Mn ternary system, manganese and aluminum elements form an aluminum-manganese phase, and the excess manganese elements form a simple manganese phase. During the preparation process, an extrusion process at a lower temperature is used to prepare a high-plasticity magnesium alloy material, which is suitable for For 3C product shells, load-bearing structures of leisure products, and aerospace parts, the material has a simple preparation process and low cost, and has good industrialization prospects.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a low-cost high-plastic deformation magnesium alloy. Background technique [0002] With the intensification of environmental protection issues, industrial lightweight has received more and more attention. As the lightest metal structural material, magnesium alloy plays a vital role in industrial lightweight applications. Magnesium alloy not only has good energy saving and emission reduction characteristics, but also is a kind of green engineering material that is easy to recycle, and has become the material of choice in lightweight design in the fields of aerospace and transportation. [0003] It has become a general consensus that magnesium alloys should be developed and applied in large quantities in the future society. However, the crystal structure of magnesium is a close-packed hexagonal structure, and there are few independent slip systems, resulting in poor plasticity of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/00C22C1/03C22F1/06
CPCC22C1/03C22C23/00C22F1/06
Inventor 汤爱涛彭鹏佘加周世博王煜烨熊潇潘复生
Owner CHONGQING UNIV
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