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High-performance dual-phase magnesium-lithium alloy material and preparation method thereof

A magnesium-lithium alloy, high-performance technology, applied in the field of high-performance dual-phase magnesium-lithium alloy materials and preparation, can solve the problems of weak basic research and short start-up time of magnesium-lithium alloys, and achieve the effect of high mechanical properties

Inactive Publication Date: 2021-09-24
西安四方超轻材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the starting time of magnesium-lithium alloys in my country is shorter than that of foreign countries, and the basic research is relatively weak. At present, the tensile strength of magnesium-lithium alloys used in my country is only about 160MPa, which cannot meet the current demand

Method used

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  • High-performance dual-phase magnesium-lithium alloy material and preparation method thereof
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  • High-performance dual-phase magnesium-lithium alloy material and preparation method thereof

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Embodiment 1

[0024] The high-performance dual-phase magnesium-lithium alloy material of the present invention comprises the following composition by mass percentage: magnesium element: balance, lithium element: 6%, Al element: 2.5%, Zn element: 2.5%, Cd element: 0.8%, Zr element: 0.9%.

[0025] Its preparation method is as follows:

[0026] 1) Melting into ingots according to the above mixing ratios, the melting process is as follows: the melting equipment is a vacuum melting furnace, the vacuum degree in the furnace is kept below 60Pa, the heating power is 30kw, and after 20 minutes of preheating, the heating power is 45kw. The solution is completely melted, and then kept at a heating power of 33kw for 40 minutes, then cooled at a heating power of 20kw for 25 minutes to the pouring temperature, and then poured;

[0027] 2) Ingot annealing:

[0028] Perform homogenization annealing on high-performance dual-phase magnesium-lithium alloy ingots, annealing temperature: 280°C, annealing time...

Embodiment 2

[0038] The high-performance dual-phase magnesium-lithium alloy material of the present invention comprises the following composition by mass percentage: magnesium element: balance, lithium element: 8%, Al element: 3.0%, Zn element: 3.0%, Cd element: 1.3%, Zr element: 0.6%.

[0039] Its preparation method is as follows:

[0040] 1) Melt into ingots according to the above mixing ratios. The melting process is as follows: the melting equipment is a vacuum melting furnace, the vacuum in the furnace is kept below 60Pa, the heating power is 20kw, and after 25 minutes of preheating, the heating power is 40kw. The solution is completely melted, and then kept at a heating power of 30kw for 50 minutes, then cooled at a heating power of 25kw for 15 minutes to the pouring temperature, and then poured;

[0041] 2) Ingot annealing:

[0042] Perform homogenization annealing on high-performance dual-phase magnesium-lithium alloy ingots, annealing temperature: 230°C, annealing time: 12 hours...

Embodiment 3

[0052] The high-performance dual-phase magnesium-lithium alloy material of the present invention comprises the following composition by mass percentage: magnesium element: balance, lithium element: 11%, Al element: 3.2%, Zn element: 3.5%, Cd element: 1.8%, Zr element: 1.5%.

[0053] Its preparation method is as follows:

[0054] 1) Melting into ingots according to the above proportions, the melting process is as follows: the melting equipment is a vacuum melting furnace, the vacuum in the furnace is kept below 60Pa, the heating power is 40kw, and after 10 minutes of preheating, the heating power is 50kw and heated to The solution is completely melted, and then kept at a heating power of 35kw for 35 minutes, then cooled at a heating power of 15kw for 30 minutes to the pouring temperature, and then poured;

[0055] 2) Ingot annealing:

[0056] Perform homogenization annealing on high-performance dual-phase magnesium-lithium alloy ingots, annealing temperature: 340°C, annealing...

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Abstract

The invention relates to a high-performance double-phase magnesium-lithium alloy material and a preparation method thereof. The magnesium-lithium alloy material comprises the following components in percentage by mass: 6.0%-12% of a lithium element, 2%-6% of an Al element, 2%-6% of a Zn element, 0.5%-2% of a Cd element, 0.3%-1.5% of a Zr element and the balance of a magnesium element. According to the invention, the single-phase magnesium-lithium alloy material is relatively high in mechanical property, and the lowest tensile strength is 260MPa.

Description

technical field [0001] The invention relates to the field of alloy materials, in particular to a high-performance dual-phase magnesium-lithium alloy material and a preparation method. Background technique [0002] Magnesium-lithium alloy is currently the lightest metal structure material that can be used as an industrial application in the world, with a density of only 1.35-1.65g / cm3, which is 1 / 3-1 / 2 lighter than aluminum alloys, and even 1 / 2 lighter than ordinary magnesium alloys. 4 to 1 / 3, so it is called ultra-light alloy. Magnesium-lithium alloy also has a series of advantages such as high specific stiffness and specific strength, good low-temperature toughness, thermal conductivity, electrical conductivity and ductility, excellent shock resistance and high resistance to high-energy particle penetration, so it is used in Applications in many fields such as aerospace, national defense and military industry have received extensive attention. Light alloy is the material ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C23/02C22C23/04C22F1/06C22C1/02B21J5/00
CPCC22C23/00C22C23/02C22C23/04C22C1/02C22F1/06B21J5/002
Inventor 柴东朗范佳王瑞韩金强
Owner 西安四方超轻材料有限公司
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