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High-strength aluminum-magnesium-lithium alloy and preparation method thereof

A lithium alloy and high-strength technology, applied in the field of high-strength aluminum-magnesium-lithium alloy and its preparation, can solve problems such as affecting the quality of the alloy, and achieve the effects of simple preparation method, improved alloy strength and high strength

Active Publication Date: 2021-05-28
江苏轩辕特种材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the aluminum content is too high, the alloy will have more pores, which will affect the quality of the alloy.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A high-strength aluminum-magnesium-lithium alloy consisting of the following components by weight: 16% lithium, 3% aluminum, 0.1% zinc, 0.1% silver, 0.05% zirconium, 0.01% calcium, 2% rare earth elements and impurity elements , the balance is magnesium, the content of the impurity element is not more than 0.03%, the rare earth element is composed of the following components by weight ratio: 45 parts of lanthanum and 45 parts of yttrium, and the content of iron in the impurity element is not more than 0.002 %, the nickel content in the impurity elements does not exceed 0.005%.

[0020] A method for preparing a high-strength aluminum-magnesium-lithium alloy, comprising the following processing steps:

[0021] (1) Put magnesium, aluminum, zinc and lithium into the melting furnace according to the mass ratio, raise the temperature in the melting furnace to 650°C, and pass tetrafluoroethane gas into the melting furnace for protection during the heating process, and wait for ...

Embodiment 2

[0026] A high-strength aluminum-magnesium-lithium alloy consisting of the following components by weight: 20% lithium, 5% aluminum, 5% zinc, 1% silver, 0.2% zirconium, 0.1% calcium, 7% rare earth elements and impurity elements , the balance is magnesium, the content of the impurity element is not more than 0.03%, the rare earth element is composed of the following components by weight: 55 parts of lanthanum, 2 parts of neodymium, 1 part of cerium and 55 parts of yttrium, the impurity The content of iron in the element does not exceed 0.002%, and the content of nickel in the impurity element does not exceed 0.005%.

[0027] A method for preparing a high-strength aluminum-magnesium-lithium alloy, comprising the following processing steps:

[0028] (1) Put magnesium, aluminum, zinc and lithium into the melting furnace according to the mass ratio, raise the temperature in the melting furnace to 750°C, and pass tetrafluoroethane gas into the melting furnace for protection during th...

Embodiment 3

[0033] A high-strength aluminum-magnesium-lithium alloy consisting of the following components by weight: 18% lithium, 4% aluminum, 2.5% zinc, 0.5% silver, 0.1% zirconium, 0.05% calcium, 4.5% rare earth elements and impurity elements , the balance is magnesium, the content of the impurity element is not more than 0.03%, the rare earth element is composed of the following components by weight: 50 parts of lanthanum, 1 part of neodymium, 0.5 part of cerium and 50 parts of yttrium, the impurity The content of iron in the element does not exceed 0.002%, and the content of nickel in the impurity element does not exceed 0.005%.

[0034] A method for preparing a high-strength aluminum-magnesium-lithium alloy, comprising the following processing steps:

[0035] (1) Put magnesium, aluminum, zinc and lithium into the melting furnace according to the mass ratio, raise the temperature in the melting furnace to 700°C, and pass tetrafluoroethane gas into the melting furnace for protection d...

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Abstract

The invention provides a high-strength aluminum-magnesium-lithium alloy and a preparation method thereof, and belongs to the technical field of aluminum-magnesium-lithium alloy processing. The high-strength aluminum-magnesium-lithium alloy is prepared from the following components in percentage by weight: 16-20% of lithium, 3-5% of aluminum, 0-5% of zinc, 0-1% of silver, 0-0.2% of zirconium, 0-0.1% of calcium, 2-7% of rare earth elements, impurity elements and the balance of magnesium, wherein the content of the impurity elements does not exceed 0.03%. The high-strength aluminum-magnesium-lithium alloy is prepared from various metal alloys, so that the alloy strength can be effectively improved. The preparation method of the high-strength aluminum-magnesium-lithium alloy is simple, and the prepared aluminum-magnesium-lithium alloy is high in strength, good in quality and suitable for industrial large-scale popularization.

Description

technical field [0001] The invention belongs to the technical field of aluminum-magnesium-lithium alloy processing, and in particular relates to a high-strength aluminum-magnesium-lithium alloy and a preparation method thereof. Background technique [0002] Aluminum-magnesium-lithium alloy is the alloy material with the smallest density so far. The magnesium-lithium alloy made of metal magnesium and metal lithium as the main elements has a very small density and is the lightest of all metal structural materials. It is lighter than ordinary magnesium alloys. It is 1 / 4-1 / 3 lighter and 1 / 3-1 / 2 lighter than aluminum alloy, so magnesium-lithium alloy is also called ultra-light alloy. Magnesium-lithium alloy has high specific strength, specific stiffness, excellent shock resistance and high-energy particle penetration resistance, and has great development potential in aerospace, aviation, weapon industry, nuclear industry, automobile, 3C industry, medical equipment and other field...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C1/02C22F1/06
CPCC22C23/00C22C1/02C22F1/06C22F1/002
Inventor 魏浩然魏昭然
Owner 江苏轩辕特种材料科技有限公司
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