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High-aluminum high-calcium content wrought magnesium alloy and preparation method thereof

A technology of deforming magnesium alloys and content, applied in the field of magnesium alloy materials, can solve the problems of poor high temperature performance, difficulty in specific strength advantage, high alloy cost, etc., and achieve the effect of increasing strength, reducing grain size, and promoting recrystallization

Inactive Publication Date: 2019-01-04
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Common magnesium alloys such as AZ series and AM series have poor high temperature performance, ZK series alloys and Mg-RE series alloys have high costs, and the specific strength advantage is difficult to compare with high-strength Al alloys

Method used

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  • High-aluminum high-calcium content wrought magnesium alloy and preparation method thereof
  • High-aluminum high-calcium content wrought magnesium alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] High-aluminum and high-calcium content deformed magnesium alloy Mg-4Al-6Ca-1Zn-1Mn (AXZM4611), the composition is by mass percentage: 4wt.% Al; 6wt.% Ca; 1wt.% Zn; 1wt.% Mn; The amount is Mg.

[0021] The preparation method of the wrought magnesium alloy of high aluminum and high calcium content of the present embodiment is:

[0022] (1) Take the following components according to mass percentage: 4wt.% aluminum; 6wt.% calcium, 1wt.% zinc; 1wt.% manganese; the balance is magnesium; manganese is a magnesium-manganese master alloy with a manganese content of 6wt.%, and others The metal purity is above 99%.

[0023] (2) Ingot smelting: under the protection of high-purity argon, heat commercially pure magnesium, and after it melts, add alloying elements aluminum, calcium, zinc, manganese, stir for 3 minutes, and control the solution temperature at 700°C Set aside for 10 minutes, remove the scum on the surface, and cast the solution into a mold preheated to 200°C at a tempe...

Embodiment 2

[0028] Deformed magnesium alloy Mg-6Al-6Ca-1Zn-1Mn (AXZM4611) with high aluminum and high calcium content, the components are: 6wt.% Al; 6wt.% Ca; 1wt.% Zn; 1wt.% Mn; The amount is Mg.

[0029] The preparation method of the wrought magnesium alloy of high aluminum and high calcium content of the present embodiment is:

[0030] (1) Take the following components according to mass percentage: 6wt.% aluminum; 6wt.% calcium, 1wt.% zinc; 1wt.% manganese; the balance is magnesium; manganese is a magnesium-manganese master alloy with a manganese content of 6wt.%, and others The metal purity is above 99%.

[0031] (2) Ingot smelting: under the protection of high-purity argon, heat commercially pure magnesium, and after it melts, add alloying elements aluminum, calcium, zinc, manganese, stir for 3 minutes, and control the solution temperature at 700°C Set aside for 10 minutes, remove the scum on the surface, and cast the solution into a mold preheated to 200°C at a temperature of 700°...

Embodiment 3

[0036] Deformed magnesium alloy Mg-12.5Al-12.5Ca-1Zn-1Mn-1.5Sr-2Ba with high aluminum and high calcium content, the composition is: 12.5wt.% Al; 12.5wt.% Ca; 1.0wt.% Zn ; 1.0wt.% Mn; 1.5wt.% Sr; 2.0wt.% Ba; the balance is Mg.

[0037] The preparation method of the wrought magnesium alloy of high aluminum and high calcium content of the present embodiment is:

[0038] (1) Take the following components according to mass percentage: 12.5wt.%Al; 12.5wt.%Ca; 1.0wt.%Zn; 1.0wt.%Mn; 1.5wt.%Sr; 2.0wt.%Ba; Magnesium; Manganese is a magnesium-manganese master alloy with a manganese content of 6wt.%, strontium is a magnesium-strontium master alloy with a strontium content of 20wt.%, and the purity of other metals is above 99%.

[0039] (2) Ingot smelting: under the protection of high-purity argon, heat commercially pure magnesium, after it melts, add alloying elements aluminum, calcium, zinc, manganese, strontium, barium, stir for 5 minutes, and control the temperature of the solution S...

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Abstract

The invention discloses a high-aluminum high-calcium content wrought magnesium alloy and a preparation method thereof and belongs to the field of wrought magnesium alloy materials. The high-aluminum high-calcium content wrought magnesium alloy comprises the following components in percentage by mass: 3.00-20.00% of aluminum, 2.00-15.00% of calcium, 0.10-5.00% of zinc, 0.10-3.00% of manganese, 0-5.00% of strontium, 0-5.00% of barium and the balance of magnesium and inevitable impurities. The preparation method comprises the following steps: firstly, melting pure magnesium cast ingots, sufficiently melting, further adding metals such as calcium, aluminum, zinc, manganese, strontium and barium, sufficiently stirring, casting so as to obtain cast ingots, further carrying out homogenization treatment on the cast ingots, and extruding by using a backward extrusion process, thereby obtaining a corresponding extrusion profile. The strength and the toughness of the high-aluminum high-calcium content wrought magnesium alloy are improved, and good mechanical properties are achieved.

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 calcium content and a preparation method thereof. Background technique [0002] In recent years, the energy crisis, resource depletion and environmental degradation have put forward higher requirements for the lightweight, energy saving, emission reduction and low-carbon environmental protection of the automobile industry. Magnesium alloys have attracted more and more attention due to their excellent properties such as low density and high specific strength. Compared with traditional cast magnesium alloys, wrought magnesium alloy materials have higher strength, better ductility and superior mechanical properties. At present, the strength of commercialized high-strength forged magnesium alloys such as AZ80 and ZK60 still cannot reach the strength level of forged aluminum alloys, such as mature aluminum alloys such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02C22C23/00C22C23/04C22C1/03C22F1/06C22F1/02
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
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