High-room-temperature ductility magnesium alloy material and preparation method thereof

A magnesium alloy, room temperature technology, applied in the field of high room temperature plastic magnesium alloy materials and its preparation, can solve the problems that room temperature formability is not greatly improved, is not suitable for large-scale application, and cannot be widely used, so as to improve room temperature ductility and deformability, low cost, and low degree of anisotropy

Active Publication Date: 2013-02-13
福建镁孚科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the early days, there were patent reports on adding alloying elements such as yttrium (Y) and silicon (Si) to improve the superplastic forming and manufacturing of magnesium alloys. However, because the forming temperature must be as high as 200°C, the room temperature formability has not been greatly improved, and the manufacturing method is complicated.

Method used

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  • High-room-temperature ductility magnesium alloy material and preparation method thereof
  • High-room-temperature ductility magnesium alloy material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0027] The high room temperature plastic magnesium alloy material of this embodiment consists of the following components by mass percentage:

[0028] Li 1.0%;

[0029] Al 3.0%;

[0030] Zn 1.0%;

[0031] Mn 0.3%;

[0032] Impurities ≤0.3%;

[0033] Magnesium balance.

[0034] The preparation method of the high room temperature plastic magnesium alloy material in this embodiment is to heat the formula amount of pure lithium and AZ31 magnesium alloy to 720°C under the condition of vacuuming and feeding inert gas. Place it for 15 minutes, then pour the smelted alloy liquid into the mold to obtain the as-cast magnesium alloy; heat the as-cast magnesium alloy at 380°C for 3 hours and extrude it into a magnesium alloy plate with a thickness of 2mm and a width of 120mm (extrusion machine Tonnage 1250T, extrusion cylinder diameter 165mm, extrusion ratio: 89).

Embodiment 2

[0036] The high room temperature plastic magnesium alloy material of this embodiment consists of the following components by mass percentage:

[0037] Li 3.0%;

[0038] Al 3.0%;

[0039] Zn 1.0%;

[0040] Mn 0.3%;

[0041] Impurities ≤0.3%;

[0042] Magnesium balance.

[0043] The preparation method of the high room temperature plastic magnesium alloy material in this embodiment is to heat the formula amount of pure lithium and AZ31 magnesium alloy to 720°C under the condition of vacuuming and feeding inert gas. Place it for 15 minutes, then pour the smelted alloy liquid into the mold to obtain the as-cast magnesium alloy; heat the as-cast magnesium alloy at 380°C for 3 hours and extrude it into a magnesium alloy plate with a thickness of 2mm and a width of 120mm (extrusion machine Tonnage 1250T, extrusion cylinder diameter 165mm, extrusion ratio: 89).

Embodiment 3

[0045] The high room temperature plastic magnesium alloy material of this embodiment consists of the following components by mass percentage:

[0046] Li 5.0%;

[0047] Al 3.0%;

[0048] Zn 1.0%;

[0049] Mn 0.3%;

[0050] Impurities ≤0.3%;

[0051] Magnesium balance.

[0052] The preparation method of the high room temperature plastic magnesium alloy material in this embodiment is to heat the formula amount of pure lithium and AZ31 magnesium alloy to 720°C under the condition of vacuuming and feeding inert gas. Place it for 15 minutes, then pour the smelted alloy liquid into the mold to obtain the as-cast magnesium alloy; heat the as-cast magnesium alloy at 380°C for 3 hours and extrude it into a magnesium alloy plate with a thickness of 2mm and a width of 120mm (extrusion machine Tonnage 1250T, extrusion cylinder diameter 165mm, extrusion ratio: 89).

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Abstract

The invention discloses a high-room-temperature ductility magnesium alloy material and a preparation method thereof. The magnesium alloy material comprises, by weight, 1.0%-5.0% of Li, 2.5%-3.5% of Al, 0.7%-1.3% of Zn, 0.2%-0.5% of Mn, no more than 0.3% of impurities, and the balance Mg. The preparation method comprises that under the condition of vacuumizing and inert gas leading-in, pure lithium and an AZ31 magnesium alloy, which are in a formula ratio are heated to 720 DEG C, when the alloy is melted completely, the alloy is subjected to heat preservation and storage at the temperature of 700 DEG C for 15min, and then the melted alloy liquid is poured into a mold. According to the method, Li elements are added into the AZ31 magnesium alloy, the obtained magnesium alloy material has high room-temperature ductility, and the anisotropy degree is low. Besides, the added alloy elements are low in cost relatively and simple in preparation process.

Description

technical field [0001] The invention relates to a magnesium alloy material and a preparation method thereof, in particular to a high room temperature plastic magnesium alloy material and a preparation method thereof. Background technique [0002] Magnesium alloy has the advantages of low density, high strength, high thermal conductivity, battery shielding, and easy recycling. In recent years, it has been gradually used as a lightweight structural material in the fields of transportation, communications, electronics, aerospace, and other civilian products. Deformed magnesium alloys are usually deformed by extrusion, rolling, forging and other deformation methods to improve the microstructure of the alloy and improve the performance of the magnesium alloy. Magnesium alloy has the characteristics of hexagonal crystal structure, and there are few independent slip systems under room temperature deformation conditions, resulting in low room temperature plasticity and difficulty i...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C23/02C22C1/02B21C23/02
Inventor 蒋斌潘复生李瑞红杨青山曾迎
Owner 福建镁孚科技有限公司
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