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Low-cost wrought magnesium alloy strengthened by light rare earth elements Ce and Sm and preparation method of low-cost wrought magnesium alloy

A technology of light rare earth elements and deformed magnesium alloys, applied in the field of magnesium alloy materials, can solve the problems of low price of light rare earth elements, underutilization of value, high cost and large-scale application, so as to promote dynamic recrystallization behavior and promote small horn crystals Boundaries and dislocations, the effect of refining the extruded grain size

Inactive Publication Date: 2020-09-01
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Magnesium alloys with high rare earth content limit their large-scale application due to their high cost, and magnesium alloys with high rare earth content limit their large-scale application due to their high cost, but light rare earth elements such as Ce and Sm are relatively cheap
At present, Sm is still treated as tailings in the rare earth smelting process, and its value has not been fully utilized

Method used

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  • Low-cost wrought magnesium alloy strengthened by light rare earth elements Ce and Sm and preparation method of low-cost wrought magnesium alloy
  • Low-cost wrought magnesium alloy strengthened by light rare earth elements Ce and Sm and preparation method of low-cost wrought magnesium alloy
  • Low-cost wrought magnesium alloy strengthened by light rare earth elements Ce and Sm and preparation method of low-cost wrought magnesium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] High-strength wrought magnesium alloy Mg-0.2Ce-0.5Sm containing light rare earth elements, the components are: 0.2wt.% Ce, 0.5wt.% Sm, and the balance is Mg.

[0025] The preparation method of the high-strength wrought magnesium alloy containing light rare earth elements of this embodiment is:

[0026] (1) Weigh the following components according to mass percentage: 0.2 wt.% cerium, 0.5 wt.% samarium, the balance is magnesium, cerium is pure cerium or magnesium cerium master alloy, samarium is pure samarium or magnesium samarium master alloy;

[0027] (2) Ingot smelting: Under the protection of high-purity argon, heat industrially pure magnesium until it melts, add alloy elements Ce and Sm, stir thoroughly after melting, remove the scum on the surface after standing still, and cast to preheated In the mould, an ingot of deformed magnesium alloy containing cerium is obtained;

[0028] (3) Homogenization treatment: Cover the ingot with graphite powder to isolate the air,...

Embodiment 2

[0032] High-strength wrought magnesium alloy Mg-0.5Ce-1Sm containing light rare earth elements, the components are: 0.5 wt.% Ce, 1.0 wt.% Sm, and the balance is Mg.

[0033] The preparation method of the high-strength wrought magnesium alloy containing light rare earth elements of this embodiment is:

[0034] (1) Weigh the following components according to mass percentage: 0.5 wt.% cerium, 1.0 wt.% samarium, the balance is magnesium, cerium is pure cerium or magnesium cerium master alloy, samarium is pure samarium or magnesium samarium master alloy;

[0035] (2) Ingot smelting: Under the protection of high-purity argon, heat industrially pure magnesium until it melts, add alloy elements Ce and Sm, stir thoroughly after melting, remove the scum on the surface after standing still, and cast to preheated In the mould, an ingot of deformed magnesium alloy containing cerium is obtained;

[0036] (3) Homogenization treatment: Cover the ingot with graphite powder to isolate the air,...

Embodiment 3

[0040] The high-strength wrought magnesium alloy Mg-1.2Ce-1Sm containing light rare earth elements is composed of 1.2wt.% Ce, 1.0wt.% Sm, and the balance is Mg.

[0041] The preparation method of the high-strength wrought magnesium alloy containing light rare earth elements of this embodiment is:

[0042] (1) Weigh the following components according to mass percentage: 1.2 wt.% cerium, 1.0 wt.% samarium, the balance is magnesium, cerium is pure cerium or magnesium cerium master alloy, samarium is pure samarium or magnesium samarium master alloy;

[0043] (2) Ingot smelting: Under the protection of high-purity argon, heat industrially pure magnesium until it melts, add alloy elements Ce and Sm, stir thoroughly after melting, remove the scum on the surface after standing still, and cast to preheated In the mould, an ingot of deformed magnesium alloy containing cerium is obtained;

[0044] (3) Homogenization treatment: Cover the ingot with graphite powder to isolate the air, hea...

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Abstract

The invention discloses a low-cost wrought magnesium alloy strengthened by light rare earth elements Ce and Sm and a preparation method of the low-cost wrought magnesium alloy, and belongs to the field of wrought magnesium alloy materials. The low-cost wrought magnesium alloy is prepared from the following components, by mass: 0.2-1.2% of cerium, 0.5-2.0% of samarium, 0.1-1.0% of aluminum, 0.1-0.5% of zinc, 0.1-0.5% of manganese, and the balance magnesium and inevitable impurities (Si, Ni, Cu and the like). The preparation method of the low-cost wrought magnesium alloy comprises the steps of melting a pure magnesium ingot; then adding the metal of the cerium, calcium, the manganese, the aluminum, the zinc and the like after the pure magnesium ingot is fully melted; after fully stirring, casting into a cast ingot; later carrying out homogenization treatment on the cast ingot; and extruding the cast ingot through a reverse extrusion process to obtain a corresponding extruded profile. According to the preparation method, the novel wrought magnesium alloy with both high strength and high plasticity is prepared through the smelting, the homogenization treatment and the subsequent extrusion (reverse extrusion) process, the strength and toughness of the novel wrought magnesium alloy are enhanced, and the mechanical performance of the novel wrought magnesium alloy is good.

Description

technical field [0001] The invention belongs to the field of magnesium alloy materials, in particular to a high-strength deformed magnesium alloy containing light rare earth elements 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 low density, high specific strength, easy recycling, and good electromagnetic shielding performance. Although cast magnesium alloys are currently the most widely used magnesium alloys, wrought magnesium alloys have higher strength, better ductility and better comprehensive mechanical properties, and have been gradually applied to the field of rail transit. Magnesium alloys with high rare earth content limit their large-scal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/06C22C1/03C22C1/02C22F1/06
CPCC22C1/02C22C1/03C22C23/06C22F1/06
Inventor 潘虎成
Owner NORTHEASTERN UNIV
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