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High-Mn Mg-Ca-Mn-Al-Zn series deforming magnesium alloy and preparing method thereof

A technology for deforming magnesium alloys, which is applied in the field of magnesium alloy materials, can solve problems such as increasing alloy density, increasing alloy cost, and limiting alloy applications, and achieves the goals of refining grain size, ensuring strength and toughness, and improving comprehensive mechanical properties. Effect

Inactive Publication Date: 2020-07-28
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • High-Mn Mg-Ca-Mn-Al-Zn series deforming magnesium alloy and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Mg-Ca-Mn-Al-Zn wrought magnesium alloy Mg-0.1Ca-2.0Mn-0.3Al-0.3Zn with high Mn content, the composition is: 0.1 wt.%Ca; 2.0 wt.%Mn; 0.3 wt.%Al; 0.3 wt.%Zn, the balance is Mg.

[0022] The preparation method of the Mg-Ca-Mn-Al-Zn wrought magnesium alloy of the high Mn content of the present embodiment is:

[0023] (1) Weigh the following components according to mass percentage: 0.1 wt.%Ca; 2.0 wt.%Mn; 0.3 wt.%Al; 0.3 wt.%Zn, the balance is Mg; manganese is magnesium with a manganese content of 6 wt.%. Manganese master alloy, the metal purity is above 99%;

[0024] (2) Ingot smelting: Under the protection of protective gas, add the raw materials in two batches: the first batch: add pure magnesium and heat to 740~780°C, stir well and wait until it is completely melted; the second batch: add Pure calcium, pure aluminum, pure zinc, magnesium-manganese intermediate alloys; fully stir for 3-6 minutes, control the temperature of the melt at 700-750°C and let it stand for 10-2...

Embodiment 2

[0029] Mg-Ca-Mn-Al-Zn wrought magnesium alloy Mg-0.4Ca-3.0Mn-0.85Al-0.9Zn with high Mn content, the composition is: 0.4 wt.%Ca; 3.0 wt.%Mn; 0.85 wt.%Al; 0.9 wt.%Zn, the balance is Mg.

[0030] The preparation method of the Mg-Ca-Mn-Al-Zn wrought magnesium alloy of the high Mn content of the present embodiment is:

[0031] (1) Weigh the following components according to mass percentage: 0.4 wt.%Ca; 3.0 wt.%Mn; 0.85 wt.%Al; 0.9 wt.%Zn, the balance is Mg; manganese is magnesium with a manganese content of 6 wt.% Manganese master alloy, the metal purity is above 99%;

[0032] (2) Ingot smelting: Under the protection of protective gas, add the raw materials in two batches: the first batch: add pure magnesium and heat to 740~780°C, stir well and wait until it is completely melted; the second batch: add Pure calcium, pure aluminum, pure zinc, magnesium-manganese intermediate alloys; fully stir for 3-6 minutes, control the temperature of the melt at 700-750°C and let it stand for 10...

Embodiment 3

[0037] Mg-Ca-Mn-Al-Zn wrought magnesium alloy Mg-0.3Ca-3.5Mn-2.5Al-0.75Zn with high Mn content, the composition is: 0.3 wt.%Ca; 3.5 wt.%Mn; 2.5 wt.%Al; 0.75 wt.%Zn, the balance is Mg.

[0038] The preparation method of the Mg-Ca-Mn-Al-Zn wrought magnesium alloy of the high Mn content of the present embodiment is:

[0039] (1) Weigh the following components according to mass percentage: 0.3 wt.%Ca; 3.5 wt.%Mn; 2.5 wt.%Al; 0.75 wt.%Zn, the balance is Mg; manganese is magnesium with a manganese content of 6 wt.%. Manganese master alloy, the metal purity is above 99%;

[0040] (2) Ingot smelting: Under the protection of protective gas, add the raw materials in two batches: the first batch: add pure magnesium and heat to 740~780°C, stir well and wait until it is completely melted; the second batch: add Pure calcium, pure aluminum, pure zinc, magnesium-manganese intermediate alloys; fully stir for 3-6 minutes, control the temperature of the melt at 700-750°C and let it stand for 1...

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Abstract

The invention discloses a high-Mn Mg-Ca-Mn-Al-Zn series deforming magnesium alloy and a preparing method thereof, and belongs to the field of deforming magnesium alloy materials. The high-Mn Mg-Ca-Mn-Al-Zn series deforming magnesium alloy comprises, by mass percent, 0.10 to 0.40% of Ca, 0.30 to 2.50% of Al, 0.30 to 2.50% of Zn, 2.00 to 5.00 of Mn and the balance Mg and other inevitable impurities(Si, Ni, Cu and the like), and the preparing method of the magnesium alloy comprises the steps that a pure magnesium ingot casting is melted, after sufficient melting, calcium, manganese, aluminum, zinc and the like are added, after sufficient stirring, pouring is carried out to form the ingot casting, then, homogenization treatment of the ingot casting is carried out, and through a reverse extrusion process, a corresponding extrusion profile is obtained. Through a smelting, homogenization treatment and subsequent extrusion (reverse extrusion) process, the novel deforming magnesium alloy highin strength and high in plasticity can be prepared, the strength and the plasticity can be reinforced, and the good mechanical property is achieved.

Description

technical field [0001] The invention belongs to the field of magnesium alloy materials, in particular to a Mg-Ca-Mn-Al-Zn series deformed magnesium alloy with high Mn content and a preparation method thereof. Background technique [0002] With the continuous acceleration of global industrial development, environmental issues and resource shortages have attracted more and more attention, and energy conservation and consumption reduction have become urgent problems to be solved. Lightweight materials can greatly save costs and greatly reduce energy consumption, 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 , only equivalent to 2 / 3 of aluminum, 1 / 4 of steel, with high specific strength and specific stiffness, good damping and shock absorption performance, good machining performance and good thermal conductivity, used in transportation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C1/03C22F1/02C22F1/06
CPCC22C1/03C22C23/00C22F1/002C22F1/008C22F1/02C22F1/06
Inventor 潘虎成谢东升任玉平谢红波秦高梧
Owner NORTHEASTERN UNIV
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