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A kind of wrought magnesium alloy with high aluminum and high strontium content and preparation method thereof

A technology for deforming magnesium alloy and strontium content, which is applied in the field of magnesium alloy materials, can solve the problems of increasing alloy density, increasing alloy cost, and limiting alloy application, etc., and achieves the effects of reducing grain size, good mechanical properties, and promoting recrystallization

Active Publication Date: 2021-02-19
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adding a high content of rare earth elements increases the cost of the alloy
And the addition of rare earth elements increases the density of the alloy, which limits the application of the alloy

Method used

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  • A kind of wrought magnesium alloy with high aluminum and high strontium content and preparation method thereof
  • A kind of wrought magnesium alloy with high aluminum and high strontium content and preparation method thereof
  • A kind of wrought magnesium alloy with high aluminum and high strontium content and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The wrought magnesium alloy Mg-3Al-2Sr (AJ32) with high aluminum and high strontium content has the following components by mass percentage: 3wt.% Al; 2wt.% Sr; the balance is Mg.

[0024] The preparation method of the deformed magnesium alloy with high aluminum and high strontium content of the present embodiment is as follows:

[0025] (1) The following components are weighed according to mass percentage: 3wt.% aluminum; 2wt.% strontium, the balance being magnesium; strontium is a magnesium-strontium master alloy with a strontium content of 20wt.%, and the metal purity is above 99%;

[0026] (2) Ingot smelting: under the protection of high-purity argon, heat commercially pure magnesium to 740°C, after it melts, add alloying elements aluminum and strontium, stir for 3 minutes, control the solution temperature at 700°C and let stand After 10 minutes, the scum on the surface was removed, and the solution was cast into a mold preheated to 200°C at a temperature of 700°C t...

Embodiment 2

[0031] The wrought magnesium alloy Mg-3Al-2Sr (AJ32) with high aluminum and high strontium content has the following components by mass percentage: 3wt.% Al; 2wt.% Sr; the balance is Mg.

[0032] The preparation method of the deformed magnesium alloy with high aluminum and high strontium content of the present embodiment is as follows:

[0033] (1) The following components are weighed according to mass percentage: 3wt.% aluminum; 2wt.% strontium, the balance being magnesium; strontium is a magnesium-strontium master alloy with a strontium content of 20wt.%, and the metal purity is above 99%;

[0034] (2) Ingot smelting: under the protection of high-purity argon, heat commercially pure magnesium to 740°C, after it melts, add alloying elements aluminum and strontium, stir for 3 minutes, control the solution temperature at 700°C and let stand After 10 minutes, the scum on the surface was removed, and the solution was cast into a mold preheated to 200°C at a temperature of 700°C t...

Embodiment 3

[0039] The wrought magnesium alloy Mg-6Al-2Sr (AJ62) with high aluminum and high strontium content has the following components by mass percentage: 6wt.% Al; 2wt.% Sr; the balance is Mg.

[0040] (1) The following components are weighed according to mass percentage: 6wt.% aluminum; 2wt.% strontium, and the balance is magnesium; strontium is a magnesium-strontium master alloy with a strontium content of 20wt.%, and the metal purity is above 99%;

[0041] (2) Ingot smelting: under the protection of high-purity argon, heat commercially pure magnesium to 740°C, after it melts, add alloying elements aluminum and strontium, stir for 3 minutes, control the solution temperature at 700°C and let stand After 10 minutes, the scum on the surface was removed, and the solution was cast into a mold preheated to 200°C at a temperature of 700°C to obtain a deformed magnesium alloy ingot with high aluminum and strontium content;

[0042] (3) Homogenization treatment: the ingot of strontium-contai...

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Abstract

A wrought magnesium alloy with high aluminum and high strontium content and a preparation method thereof belong to the field of wrought magnesium alloy materials. The components of the wrought magnesium alloy with high aluminum and high strontium content of the present invention are: aluminum: 3.00% to 15.00%; strontium: 2.00% to 10.00%; zinc: 0.1% to 5.00%; manganese: 0.1% to 3.00% ; Barium: 0.1% ~ 5.00%, the balance is magnesium and unavoidable impurities. The preparation method of the present invention is as follows: first melt pure magnesium ingot, after fully melting, then add metal aluminum, strontium, zinc, manganese, barium, etc., fully stir and then cast into ingot, then carry out homogenization treatment of ingot, after The reverse extrusion process extrudes to obtain the corresponding extruded profile. Through smelting, homogenization treatment and subsequent extrusion (reverse extrusion) process, a new wrought magnesium alloy with both strength and toughness is prepared, its strength and toughness are enhanced, and it has better mechanical properties.

Description

technical field [0001] The invention belongs to the field of magnesium alloy materials, in particular to a deformed magnesium alloy with high aluminum and high strontium content and a preparation method thereof. Background technique [0002] With the increasingly serious environmental problems and the shortage of resources in recent years, energy saving and consumption reduction has become an urgent problem to be solved. The light weight of materials can greatly reduce the level of energy loss, which is of great significance to improving energy efficiency and protecting the environment. As the lightest metal structure material at present, the density of magnesium is only 1.74g / cm 3 , which is only 2 / 3 of aluminum and 1 / 4 of steel, has high specific strength and specific stiffness, good damping and shock absorption performance, good machining performance and good thermal conductivity, especially can be reused, so it is Known as the "green engineering material" of the 21st c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/02C22C1/03C22C23/00C22C23/04C22F1/02C22F1/06
CPCC22C1/03C22C23/00C22C23/02C22C23/04C22F1/02C22F1/06
Inventor 潘虎成秦高梧任玉平杨延涛李景仁李松左良
Owner NORTHEASTERN UNIV LIAONING
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