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High-strength high-plasticity magnesium alloy and preparation method thereof

A magnesium alloy, high plasticity technology, applied in the field of metal materials, can solve the problem of less types of magnesium alloys, and achieve the effects of convenient operation, easy popularization and application, and simple process

Active Publication Date: 2010-02-10
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are relatively few types of magnesium alloys at present, and it is urgent to develop new high-strength, high-plasticity magnesium alloys suitable for different working conditions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) According to the mass percent of elements in the alloy: 7% aluminum, 3% tin, 1.0% silicon, 0.5% antimony, 1.0% yttrium, 0.5% strontium, and the rest being magnesium, take the required pure aluminum, pure tin, Pure antimony, magnesium-yttrium master alloy, magnesium-strontium master alloy;

[0021] (2) In a gas shielded melting furnace, first preheat the pure magnesium ingot with the above content to 200-400°C in a crucible, and then heat up to 650-700°C for melting;

[0022] (3) adding the above-mentioned content of pure aluminum and pure tin preheated at 100-150°C to the magnesium melt, and standing at 650-700°C for 3-5 minutes;

[0023] (4) Continue to heat up to 730-820°C, add pure silicon, pure antimony, magnesium-yttrium master alloy, and magnesium-strontium master alloy that have been preheated at 100-150°C into the melt, and keep it for 5-10 minutes , then stir for 1-15 minutes to make the ingredients even;

[0024] (5) Add No. 2 flux, keep the temperature ...

Embodiment 2

[0026] (1) According to the mass percent of elements in the alloy: aluminum 9.0%, tin 5.0%, silicon 3.0%, antimony 2.0%, yttrium 3.0%, strontium 2.0%, and the rest are magnesium, take the required pure aluminum, pure tin, Pure antimony, magnesium-yttrium master alloy, magnesium-strontium master alloy;

[0027] (2) In a gas shielded melting furnace, first preheat the pure magnesium ingot with the above content to 200-400°C in a crucible, and then heat up to 650-700°C for melting;

[0028] (3) adding the above-mentioned content of pure aluminum and pure tin preheated at 100-150°C to the magnesium melt, and standing at 650-700°C for 3-5 minutes;

[0029] (4) Continue to heat up to 730-820°C, add pure silicon, pure antimony, magnesium-yttrium master alloy, and magnesium-strontium master alloy that have been preheated at 100-150°C into the melt, and keep it for 5-10 minutes , then stir for 1-15 minutes to make the ingredients even;

[0030] (5) Add No. 2 flux, keep the temperatur...

Embodiment 3

[0032] (1) According to the mass percentage of the elements in the alloy: aluminum 6.1%, tin 1.0%, silicon 1%, yttrium 0.5%, and the rest is magnesium, weigh the required pure aluminum, pure tin, crystalline silicon and magnesium-yttrium master alloy ;

[0033] (2) In a gas shielded melting furnace, first preheat the pure magnesium ingot with the above content to 200-400°C in a crucible, and then heat up to 650-700°C for melting;

[0034] (3) adding the above-mentioned content of pure aluminum and pure tin preheated at 100-150°C to the magnesium melt, and standing at 650-700°C for 3-5 minutes;

[0035] (4) Continue to heat up to 730-820°C, add the above-mentioned content and preheated pure silicon and magnesium-yttrium intermediate alloys at 100-150°C into the melt, keep it for 5-10 minutes, and then stir for 1- 15 minutes to make the ingredients even;

[0036] (5) Add No. 2 flux, keep the temperature at 730-820°C, keep it for 5-30 minutes, blow argon for refining, and after...

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Abstract

The invention relates to the field of metal materials, in particular to a high-strength high-plasticity magnesium alloy and a preparation method thereof. The magnesium alloy comprises the chemical components by mass percent: 6.1-9.5% of aluminum, 1.0-5.0% of tin, and the balance of magnesium and additional element / elements. The additional element / elements is / are one or more types of silicon, yttrium, strontium and stibium. The magnesium alloy comprises the following additional elements by mass percent: 0-3.0% of silicon, 0-3.0% of yttrium, 0-0.2% of strontium and 0-2.0% of stibium. The preparation method comprises the following steps: under the protection of gas, melting the preheated pure magnesium at a preset temperature, adding the preheated aluminum and the tin in a certain proportioninto the melt, keeping static at a constant temperature, heating to a higher preset temperature, adding the additional element / elements, keeping static at a constant temperature, evenly stirring, refining, removing the slag, and finally casting into ingots. The magnesium alloy has the advantages of high strength and high plasticity; and the preparation method has the advantages of simple technique, high reliability, easy popularization and application, and the like.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a high-strength, high-plasticity magnesium alloy and a preparation method thereof. Background technique [0002] As the lightest metal material for engineering structures, magnesium alloy has the advantages of high specific strength and specific stiffness, good electrical and thermal conductivity, good damping and shock absorption and electromagnetic shielding performance, and good regeneration and recycling. It is used in automobiles, communication equipment, Popular in aviation and other fields. Especially in terms of light weight, it has significant advantages that are difficult to replace. However, the commonly used magnesium alloys have poor plastic deformation ability and low tensile strength, which limit their application in many occasions. The invention patent (ZL200410102510.6) applied by Beijing General Research Institute of Nonferrous Metals in 2004 provides a high-tou...

Claims

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Application Information

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IPC IPC(8): C22C23/02C22C1/03C22C1/06
Inventor 王慧远姜启川王东明何婷刘章
Owner JILIN UNIV
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