High-strength Mg-Ca-Mn-Al-Zn wrought magnesium alloy containing light rare earth element lanthanum and preparation method thereof

A technology of deforming magnesium alloys and light rare earth elements, applied in the field of magnesium alloy materials, can solve problems affecting the advantages of magnesium alloys in light weight, and achieve the effects of promoting dynamic recrystallization process, improving comprehensive mechanical properties, and refining grain size

Inactive Publication Date: 2020-08-11
NORTHEASTERN UNIV
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  • Claims
  • Application Information

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Problems solved by technology

However, too much addition of heavy rare earth elements will also affect the advantages of magnesium alloys in light weight

Method used

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  • High-strength Mg-Ca-Mn-Al-Zn wrought magnesium alloy containing light rare earth element lanthanum and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] High-strength Mg-Ca-Mn-Al-Zn series deformed magnesium alloy Mg-0.1Ca-0.7Mn-0.15Al-0.15Zn-0.6La containing light rare earth element lanthanum, the composition is: 0.1 wt.%Ca ; 0.7 wt.%Mn; 0.15 wt.%Al; 0.15 wt.%Zn; 0.6 wt.%La or 0.6 wt.% (Ce+La), the balance is Mg.

[0021] The preparation method of the high-strength Mg-Ca-Mn-Al-Zn series deformed magnesium alloy containing light rare earth element lanthanum of the present embodiment is:

[0022] (1) Weigh the following components according to mass percentage: 0.1 wt.%Ca; 0.7 wt.%Mn; 0.15 wt.%Al; 0.15wt.%Zn; 0.6 wt.%La, the balance is Mg; 6 wt.% magnesium-manganese master alloy, the metal purity is above 99%;

[0023] (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, pure lanthanum, magnesium-manganese m...

Embodiment 2

[0028] High-strength Mg-Ca-Mn-Al-Zn series deformed magnesium alloy Mg-0.8Ca-0.1Mn-0.15Al-0.15Zn-2.1La containing light rare earth element lanthanum, the composition is: 0.8 wt.%Ca ; 0.1 wt.%Mn; 0.15 wt.%Al; 0.15 wt.%Zn; 2.1 wt.%La or 2.1 wt.% (Ce+La), the balance is Mg.

[0029] The preparation method of the high-strength Mg-Ca-Mn-Al-Zn series deformed magnesium alloy containing light rare earth element lanthanum of the present embodiment is:

[0030] (1) Weigh the following components according to mass percentage: 0.8 wt.%Ca; 0.1 wt.%Mn; 0.15 wt.%Al; 0.15wt.%Zn; 2.1 wt.%La, the balance is Mg; 6 wt.% magnesium-manganese master alloy, the metal purity is above 99%;

[0031] (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, pure lanthanum, magnesium-manganese m...

Embodiment 3

[0036] High-strength Mg-Ca-Mn-Al-Zn series deformed magnesium alloy Mg-1.5Ca-1.3Mn-1.8Al-0.15Zn-0.2La containing light rare earth element lanthanum, the composition is 1.5 wt.%Ca ; 1.3 wt.%Mn; 1.8 wt.%Al; 0.15 wt.%Zn; 0.2 wt.%La or 0.2 wt.% (Ce+La), the balance is Mg.

[0037] The preparation method of the high-strength Mg-Ca-Mn-Al-Zn series deformed magnesium alloy containing light rare earth element lanthanum of the present embodiment is:

[0038] (1) Weigh the following components according to mass percentage: 1.5 wt.%Ca; 1.3 wt.%Mn; 1.8 wt.%Al; 0.15 wt.%Zn; 0.2 wt.%La, the balance is Mg; 6 wt.% magnesium-manganese master alloy, the metal purity is above 99%;

[0039] (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, pure lanthanum, magnesium-manganese mast...

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Abstract

The invention discloses a high-strength Mg-Ca-Mn-Al-Zn wrought magnesium alloy containing a light rare earth element lanthanum and a preparation method of the high-strength Mg-Ca-Mn-Al-Zn wrought magnesium alloy, and belongs to the field of wrought magnesium alloy materials. The high-strength Mg-Ca-Mn-Al-Zn wrought magnesium alloy comprises the following components of, in percentage by mass, 0.10to 1.50% of calcium, 0.10 to 1.8% of aluminum, 0.10 to 1.9% of zinc, 0.10 to 4.8% of manganese, 0.20 to 3.00% of lanthanum, and the balance magnesium and unavoidable impurities (Si, Ni, Cu and the like); and the preparation method of the magnesium alloy comprises the following steps that a pure magnesium cast ingot is melt firstly, after fully melting is carried out, metal calcium, manganese, aluminum, zinc, light rare earth lanthanum and the like are added, fully stirring is carried out, casting into a cast ingot is carried out, then homogenizing treatment on the cast ingot is carried out, and extruding through a reverse extrusion process is carried out to obtain a corresponding extruded profile. According to the high-strength Mg-Ca-Mn-Al-Zn wrought magnesium alloy containing the light rare earth element lanthanum and the preparation method of the high-strength Mg-Ca-Mn-Al-Zn wrought magnesium alloy, the novel wrought magnesium alloy with high strength and high plasticity is preparedthrough smelting, homogenizing treatment and subsequent extrusion (reverse extrusion) processes, the strength and toughness of the novel wrought magnesium alloy are enhanced, and the novel wrought magnesium alloy has good mechanical properties.

Description

technical field [0001] The invention belongs to the field of magnesium alloy materials, in particular to a high-strength Mg-Ca-Mn-Al-Zn series deformed magnesium alloy containing light rare earth element lanthanum 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 we all know, magnesium and magnesium alloys are the lightest structural materials in industrial and engineering applications so far, and 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, high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C23/02C22C23/06C22C1/03C22F1/06B21C23/20
CPCB21C23/205C22C1/03C22C23/00C22C23/02C22C23/06C22F1/002C22F1/06
Inventor 潘虎成谢东升任玉平谢红波秦高梧
Owner NORTHEASTERN UNIV
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