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High-plasticity magnesium alloy and preparation method thereof

A magnesium alloy, high plasticity technology, applied in the field of alloy materials, can solve the problems of low yield and high production cost, and achieve the effect of low cost, low price and obvious effect

Inactive Publication Date: 2011-05-18
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Deformation processes such as extrusion, rolling, and forging of magnesium alloys have been applied since the 1940s and 1950s, but there are always problems such as low yield and high production costs. Therefore, it is necessary to develop high plastic deformation magnesium alloys

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1 Preparation of High Plasticity Magnesium Alloy

[0026] 1 recipe

[0027] In the formula of high plasticity magnesium alloy, by weight percentage: aluminum 0.5%; calcium 0.1%; manganese 2%; the balance is magnesium.

[0028] 2 preparation

[0029] Raise the temperature of magnesium to 700-750°C, and pass SF 6 and CO 2 Under the protective atmosphere of mixed gas, add the formula amount of calcium in the form of magnesium-calcium mesophase alloy to obtain Mg-Ca series alloy and keep it warm for 0.5 hours; then add pure aluminum and keep it warm for 30 minutes to let part of the aluminum and calcium react to form al 2 Ca, to obtain Mg-Al-Ca series alloys; raise the temperature to 750°C and add the formula amount of manganese in the form of magnesium-manganese mesophase alloy and keep it warm for 1 hour to obtain Mg-Al-Ca-Mn series alloys, which will be high after cooling plastic magnesium alloy.

[0030] 3 performance parameters

[0031] After testing, i...

Embodiment 2

[0032] Example 2 Preparation of High Plasticity Magnesium Alloy

[0033] 1 recipe

[0034] In the formula of the high plasticity magnesium alloy, by weight percentage: aluminum 1.5%; calcium 0.1%; manganese 2%; the balance is magnesium.

[0035] 2 preparation

[0036] Raise the temperature of magnesium to 700-750°C, and pass SF 6 and CO 2 Under the protective atmosphere of mixed gas, add the formula amount of calcium in the form of magnesium-calcium mesophase alloy to obtain Mg-Ca series alloy and keep it warm for 1 hour; then add pure aluminum and keep it warm for 30 minutes to let part of the aluminum and calcium react to form al 2 Ca, to obtain Mg-Al-Ca series alloys; raise the temperature to 750°C and add the formula amount of manganese in the form of magnesium-manganese mesophase alloy and keep it warm for 0.5 hours to obtain Mg-Al-Ca-Mn series alloys, which will be high after cooling plastic magnesium alloy.

[0037] 3 performance parameters

[0038] After testi...

Embodiment 3

[0039] Example 3 Preparation of High Plasticity Magnesium Alloy

[0040] 1 recipe

[0041] In the formula of the high plasticity magnesium alloy, by weight percentage: aluminum 2%; calcium 0.1%; manganese 2%; the balance is magnesium.

[0042] 2 preparation

[0043] Raise the temperature of the formula amount of magnesium to 700-750°C, 6 and CO 2 Under the protective atmosphere of mixed gas, add the formula amount of calcium in the form of magnesium-calcium mesophase alloy to obtain Mg-Ca series alloy and keep it warm; then add pure aluminum and keep it warm for 30 minutes to let part of the aluminum and calcium react to form Al 2 Ca, to obtain Mg-Al-Ca series alloys; raise the temperature to 750°C and add the formula amount of manganese in the form of magnesium-manganese mesophase alloy and keep it warm for 1 hour to obtain Mg-Al-Ca-Mn series alloys, which will be high after cooling plastic magnesium alloy.

[0044] 3 performance parameters

[0045] After testing, its...

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Abstract

The invention relates to the field of alloy materials, in particular to high-plasticity magnesium alloy. The magnesium alloy comprises the following components in percentage by weight: 0.5-2 percent of aluminum, 2 percent of manganese, 0.02-0.1 percent of calcium and the balance of magnesium. The preparation method of the high-plasticity magnesium alloy comprises the following steps of: heating up magnesium of the quantity required in the formula to 700-750 DEG C; adding magnesium-calcium intermediate alloy under a protection atmosphere of mixed gas of SF6 and CO2 to obtain Mg-Ca series alloy and preserving heat; adding pure aluminum, preserving heat for 30 minutes, and making partial aluminum and calcium to react to generate Al2Ca to obtain Mg-Al-Ca series alloy; heating up to 750 DEG C, adding magnesium-manganese intermediate alloy and preserving heat for 1 hour to obtain Mg-Al-Ca-Mn series alloy; and cooling to obtain the high-plasticity magnesium alloy. The magnesium alloy has high plasticity, the elongation can reach 25 percent, and the yield strength is 260MPa. The method has simple preparation step and is suitable for large-scale production.

Description

technical field [0001] The invention relates to the field of alloy materials, in particular to a magnesium alloy and a preparation method thereof. Background technique [0002] Magnesium alloy has a series of advantages such as light weight, less pollution, good vibration damping, high thermal conductivity, and good electromagnetic shielding. With the improvement of production level and the continuous maturity of production and processing technology, the output of magnesium alloy has maintained a high growth momentum every year. Wrought magnesium alloys have higher strength and better ductility than cast magnesium alloys, and can adapt to the requirements of structural parts in different occasions. Magnesium alloy extrusion, rolling, forging and other deformation processes have been used since the 1940s and 1950s, but there are always problems such as low yield and high production costs. Therefore, it is necessary to develop high plastic deformation magnesium alloys. The d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C23/02C22C1/03
Inventor 蒋斌潘复生杨青山黄小勇
Owner CHONGQING UNIV
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