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Wrought magnesium alloy containing neodymium samarium light rare earth elements and high Mn content and preparation method thereof

A light rare earth element and deformed magnesium alloy technology, applied in the field of magnesium alloy materials, can solve the problems of adding alloy cost and density, and achieve the effect of promoting the dynamic recrystallization process, ensuring strength and toughness, and improving comprehensive mechanical properties

Inactive Publication Date: 2020-08-04
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 heavy rare earth elements increases the cost and density of the alloy

Method used

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  • Wrought magnesium alloy containing neodymium samarium light rare earth elements and high Mn content and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Deformed magnesium alloy containing neodymium, samarium, light rare earth elements and high Mn content Mg-0.3Ca-0.5Al-0.5Zn-0.5Mn-0.3Sm / Nd, the composition is by mass percentage: 0.3 wt.%Ca; 0.5 wt.% Al; 0.5 wt.%Zn; 0.3 wt.%Mn; 0.3 wt.%Sm+Nd, the balance being Mg.

[0021] The preparation method of the deformed magnesium alloy containing neodymium, samarium light rare earth elements and high Mn content of the present embodiment is:

[0022] (1) Weigh the following components according to mass percentage: 0.3 wt.%Ca; 0.5 wt.%Al; 0.5 wt.%Zn; 0.3 wt.%Mn; 0.3 wt.%Sm+Nd, the balance is Mg; Magnesium-manganese master alloy with a manganese content of 6 wt.%, 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 samarium, pure neodymium, magnesi...

Embodiment 2

[0028] Deformed magnesium alloy containing neodymium, samarium, light rare earth elements and high Mn content Mg-0.8Ca-0.3Al-1.0Zn-1.0Mn-1.5Sm / Nd, the composition is: 0.8 wt.%Ca; 0.3 wt.% Al; 1.0 wt.%Zn; 1.0 wt.%Mn; 1.5 wt.%Sm+Nd, the balance being Mg.

[0029] The preparation method of the deformed magnesium alloy containing neodymium, samarium light rare earth elements and high Mn content of the present embodiment is:

[0030] (1) Weigh the following components according to mass percentage: 0.8 wt.%Ca; 0.3 wt.%Al; 1.0 wt.%Zn; 1.0 wt.%Mn; 1.5 wt.%Sm+Nd, the balance is Mg; Magnesium-manganese master alloy with a manganese content of 6 wt.%, 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 samarium, pure neodymium, magnesium-manganese master...

Embodiment 3

[0036] Wrought magnesium alloy Mg-1.8Ca-1.3Al-1.5Zn-2.8Mn-3.0Sm / Nd containing neodymium, samarium light rare earth elements and high Mn content, the composition is: 1.8 wt.%Ca; 1.3 wt.% Al; 1.5 wt.%Zn; 2.8 wt.%Mn; 3.0 wt.%Sm+Nd, the balance being Mg.

[0037] The preparation method of the deformed magnesium alloy containing neodymium, samarium light rare earth elements and high Mn content of the present embodiment is:

[0038] (1) Weigh the following components according to mass percentage: 1.8 wt.%Ca; 1.3 wt.%Al; 1.5 wt.%Zn; 2.8 wt.%Mn; 3.0 wt.%Sm+Nd, the balance is Mg; Magnesium-manganese master alloy with a manganese content of 6 wt.%, 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 samarium, pure neodymium, magnesium-manganese master a...

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Abstract

The invention discloses a wrought magnesium alloy containing neodymium samarium light rare earth elements and high Mn content and a preparation method of the wrought magnesium alloy, and belongs to the field of wrought magnesium alloy materials. The wrought magnesium alloy comprises the following components of, in percentage by mass, 0.30% to 1.90% of calcium, 0.30% to 1.50% of aluminum; 0.20% to1.70% of zinc; 0.30% to 2.80% of manganese; 0.30% to 3.00% of light rare earth (samarium or neodymium), and the balance of magnesium and inevitable 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, light rare earth (samarium or neodymium) and the like are added, after fully stirring is carried out, casting into a cast ingot is carried out, then homogenization treatment on the cast ingot is carried out, and extrudingthrough a backward extrusion process is carried out to obtain a corresponding extruded profile. According to the wrought magnesium alloy containing neodymium samarium light rare earth elements and high Mn content and the preparation method of the wrought magnesium alloy, the novel wrought magnesium alloy with high strength and high plasticity is prepared through smelting, homogenization treatmentand subsequent extrusion (backward 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 deformed magnesium alloy containing neodymium, samarium light rare earth elements and high Mn content and a preparation method thereof. Background technique [0002] With the vigorous development of the economy, the development space of the transportation industry continues to expand, and the generation of Vegetables is also increasing rapidly. At the same time, the energy on the earth is also decreasing. Environmental pollution and energy depletion have become major problems. Therefore, the development and development of green and pollution-free , Energy-saving and loss-reducing materials are of great significance. Magnesium alloy is the lightest structural material that can be applied in engineering, and the density of magnesium is only 1.74g / cm 3 , is only equivalent to 2 / 3 of aluminum, 1 / 4 of steel, and at the same time, magnesium alloy has high specific strength, ...

Claims

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Application Information

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IPC IPC(8): C22C23/06C22C23/04C22C23/02C22C23/00C22C1/03C22F1/06
CPCC22C1/03C22C23/00C22C23/02C22C23/04C22C23/06C22F1/06
Inventor 潘虎成谢东升任玉平谢红波秦高梧
Owner NORTHEASTERN UNIV
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