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Medium-strength and high-plasticity Mg-Ce-Sm series plate and pre-stretching strengthening method thereof

A mg-ce-sm, high plasticity technology, applied in the field of magnesium alloy materials, can solve the problems of increasing the density and cost of magnesium alloys

Inactive Publication Date: 2022-06-03
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adding a large amount of heavy rare earth elements such as Gd and Y can greatly improve the strength of magnesium alloys, but it will also greatly increase the density and cost of magnesium alloys, which cannot be applied on a large scale in industry, but light rare earth elements such as Ce and Sm are cheap , more abundant reserves

Method used

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  • Medium-strength and high-plasticity Mg-Ce-Sm series plate and pre-stretching strengthening method thereof
  • Medium-strength and high-plasticity Mg-Ce-Sm series plate and pre-stretching strengthening method thereof
  • Medium-strength and high-plasticity Mg-Ce-Sm series plate and pre-stretching strengthening method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

The Mg-0.4Ce-1.6Sm (0%) composition of the medium-strength and high-plastic deformation magnesium alloy sheet containing cerium-samarium element is: 0.4 wt.% Ce, 1.6 wt.% Sm, and the balance is Mg.

[0019] The preparation method of the high-strength wrought magnesium alloy containing cerium-samarium element of the present embodiment is:

(1) Weigh the following components according to mass percentage: 0.4 wt.% cerium, 1.6 wt.% samarium, the balance is magnesium, cerium is pure cerium or magnesium-cerium master alloy, and samarium is pure samarium or magnesium-samarium master alloy;

(2) Ingot smelting: under the protection of high-purity argon, heat industrial pure magnesium to 740~780 °C and melt the pure magnesium, add the alloying element Ce and Sm after melting, stir well, stir for 3~6 minutes, The temperature of the melt is controlled at 700-750 °C and allowed to stand for 10-20 minutes. After standing, the scum on the surface is removed, and the molten metal is cast...

Embodiment 2

Medium-strength and high-plastic deformation magnesium alloy sheet Mg-0.4Ce-1.6Sm-0.4Mn (0%) containing cerium and samarium elements, the components are: 0.4wt.% Ce, 1.6wt.% Sm, 0.4wt. % Mn, balance Mg.

[0022] The preparation method of the high-strength wrought magnesium alloy containing cerium-samarium element of the present embodiment is:

(1) Weigh the following components by mass percentage: 0.4 wt.% cerium, 1.6 wt.% samarium, 0.4 wt.% manganese, the balance is magnesium, cerium is pure cerium or magnesium-cerium master alloy, and samarium is pure samarium or magnesium Samarium master alloy, manganese is pure manganese or magnesium manganese master alloy;

(2) Ingot smelting: Under the protection of high-purity argon, heat industrial pure magnesium to 740~780 °C and melt the pure magnesium, add alloying elements Ce, Sm, Mn to melt and stir well, stir for 3~6 The temperature of the melt is controlled at 700~750 °C for 10~20 minutes. After standing, the scum on the s...

Embodiment 3

Medium-strength and high-plastic deformation magnesium alloy sheet Mg-0.1Ce-3.0Sm-1.0Mn (0%) containing cerium-samarium element, the components are: 0.1 wt.% Ce, 3.0 wt.% Sm, 1.0 wt. % Manganese, balance Mg.

[0025] The preparation method of the high-strength wrought magnesium alloy containing cerium-samarium element of the present embodiment is:

(1) Weigh the following components by mass percentage: 0.1 wt.% cerium, 3.0 wt.% samarium, 1.0 wt.% manganese, the balance is magnesium, cerium is pure cerium or magnesium-cerium master alloy, samarium is pure samarium or magnesium Samarium master alloy, manganese is pure manganese or magnesium manganese master alloy;

(2) Ingot smelting: under the protection of high-purity argon, heat industrial pure magnesium to 740~780 °C and melt the pure magnesium, add the alloying element Ce and Sm after melting, stir well, stir for 3~6 minutes, The temperature of the melt is controlled at 700-750 °C and allowed to stand for 10-20 minute...

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Abstract

The invention discloses a medium-strength and high-plasticity Mg-Ce-Sm series plate and a pre-stretching strengthening method thereof, and belongs to the field of wrought magnesium alloy materials. The invention discloses a wrought magnesium alloy plate containing cerium and samarium elements. The wrought magnesium alloy plate comprises the following components in percentage by mass: 0.1-1.0 wt% of cerium, 0.1-1.0 wt% of samarium and the balance of magnesium. % of samarium: 0.2 to 3.0 wt.%; %, 0-1.0 wt% of manganese, and the balance magnesium and inevitable impurities. And the subsequent pre-stretching processing deformation of the extruded plate is 0-20%. Other components of the magnesium alloy are changed according to the pre-stretching strengthening processing mode of the alloy, and are also protected by the invention; the preparation method comprises the following steps: melting pure magnesium, fully melting, adding cerium, samarium, manganese and other metals, fully stirring, casting into a cast ingot, homogenizing the cast ingot, and preparing the final wrought magnesium alloy through a backward extrusion process and subsequent pre-stretching cold deformation. The novel wrought magnesium alloy with strong plasticity is prepared through the processes of smelting, homogenization treatment, backward extrusion and pre-stretching, the strength and plasticity of the wrought magnesium alloy are improved, and the 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 medium-strength and high-plastic deformation magnesium alloy plate containing cerium, samarium, light rare earth elements and a processing method for subsequent pre-stretching strengthening. Background technique [0002] In today's world, saving natural resources and protecting the ecological environment have become important issues for the sustainable development of human society. Lightweight materials can greatly save costs and greatly reduce energy consumption, which is of great significance for improving energy utilization and protecting the environment. As we all know, magnesium and magnesium alloys are by far the lightest structural materials in industrial and engineering applications, and the density of magnesium is only 1.74 g / cm 3 ; In addition, magnesium alloys also have the advantages of strong electromagnetic shielding ability, good shock absorption perform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/06C22F1/06C22C1/02C22C1/03C22C23/00
CPCC22C23/06C22C23/00C22C1/02C22C1/03C22F1/06Y02P10/20
Inventor 潘虎成谢红波杜森杨坤任玉平秦高梧
Owner NORTHEASTERN UNIV
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