Low-cost and high-room-temperature plastic deformation magnesium alloy and preparation method thereof

A technology of plastic deformation and magnesium alloy, applied in the field of metal materials, can solve the problems of low room temperature plasticity, achieve the effect of simple preparation process, optimize alloy texture, and hinder the movement of dislocations

Active Publication Date: 2019-01-25
合肥诺瓦新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In summary, the room temperature plasticity of these existing high room temperature plasticity inventions is still low, which cannot meet the requirements of low cost, easy processing, and high performance for magnesium alloys in consumer electronics, automobiles and other industries. There is an urgent need to develop excellent magnesium alloys. Magnesium alloy material with plasticity at room temperature has great economic and social significance

Method used

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  • Low-cost and high-room-temperature plastic deformation magnesium alloy and preparation method thereof
  • Low-cost and high-room-temperature plastic deformation magnesium alloy and preparation method thereof
  • Low-cost and high-room-temperature plastic deformation magnesium alloy and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A low-cost, high-room-temperature plastically deformable magnesium alloy, the raw materials of which include: 3.0wt% Bi, 0.5wt% Ca, 0.03wt% Y, and Mg as the balance.

[0034] The preparation method of the above-mentioned low-cost high-room-temperature plastic deformation magnesium alloy comprises the following steps:

[0035] S1. Preheating: heating pure Bi, Mg-20Ca master alloy and Mg-30Y master alloy to 100°C, preheating to prepare prefabricated material;

[0036] S2, smelting: in CO 2 and SF 6 Under the protection of a mixed gas with a volume ratio of 50:1, add Mg ingots into the melting furnace, heat to 720°C and melt, then add prefabricated materials, heat up to 745°C, smelt for 5 minutes, and then mechanically stir for 3 minutes, then pass high-purity Ar The gas is refined and degassed;

[0037] S3. Casting: adjust the temperature of the melting furnace to 750°C, keep the temperature for 2 minutes, remove surface scum, and obtain cast magnesium alloy through ca...

Embodiment 2

[0040]A low-cost, high-room-temperature plastically deformable magnesium alloy, the raw materials of which include: 4.2wt% Bi, 0.7wt% Ca, 0.03wt% Y, and Mg as the balance.

[0041] The preparation method of the above-mentioned low-cost high-room-temperature plastic deformation magnesium alloy comprises the following steps:

[0042] S1. Preheating: heating pure Bi, Mg-Ca master alloy and Mg-Y master alloy to 150°C, and preheating to obtain prefabricated material;

[0043] S2, smelting: in CO 2 and SF 6 Under the protection of a mixed gas with a volume ratio of 100:1, add Mg ingots into the melting furnace, heat to 730°C and melt, then add prefabricated materials, heat up to 755°C, smelt for 15 minutes, stir for another 10 minutes, and pass high-purity Ar gas Carry out refining and degassing treatment;

[0044] S3. Casting: adjust the temperature of the melting furnace to 760°C, keep the temperature for 10 minutes, remove surface scum, and obtain cast magnesium alloy through ...

Embodiment 3

[0047] A low-cost, high-room-temperature plastically deformable magnesium alloy, the raw materials of which include: Bi 6.0wt%, Ca 1.0wt%, Y 0.03wt%, and the balance Mg.

[0048] The preparation method of the above-mentioned low-cost high-room-temperature plastic deformation magnesium alloy comprises the following steps:

[0049] S1. Preheating: heating pure Bi, Mg-Ca master alloy and Mg-Y master alloy to 125°C, and preheating to obtain a prefabricated material;

[0050] S2, smelting: in CO 2 and SF 6 Under the protection of a mixed gas with a volume ratio of 70:1, add Mg ingots into the melting furnace, heat to 720°C and melt, then add prefabricated materials, heat up to 750°C, smelt for 10 minutes, stir for another 7 minutes, and introduce high-purity Ar gas Carry out refining and degassing treatment;

[0051] S3. Casting: adjust the temperature of the melting furnace to 755°C, keep the temperature for 6 minutes, remove surface scum, and obtain cast magnesium alloy throug...

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Abstract

The invention discloses a low-cost and high-room-temperature plastic deformation magnesium alloy. The low-cost and high-room-temperature plastic deformation magnesium alloy is prepared from the following raw materials: Bi, Ca, Y and Mg. The invention further provides a preparation method of the low-cost and high-room-temperature plastic deformation magnesium alloy; the preparation method comprisesthe following steps: carrying out pre-heating treatment on pure Bi, an Mg-Ca intermediate alloy and an Mg-Y intermediate alloy to obtain a pre-formed material; under protection gas, adding an Mg ingot into a smelting furnace and smelting; adding the pre-formed material; after raising the temperature, smelting and stirring, carrying out refining and degassing treatment; after adjusting the temperature of the smelting furnace and carrying out heat-insulation treatment, removing surface dross and pouring and molding to prepare a casting-state magnesium alloy; after carrying out solid solution and quenching treatment on the casting-state magnesium alloy, cutting a casting ingot into a blank; then extruding and deforming to prepare the low-cost and high-room-temperature plastic deformation magnesium alloy. According to the magnesium ally provided by the invention, the room-temperature plasticity becomes high and the room-temperature elongation percentage is increased; a preparation technology is simple and low in cost and mass production is easy to realize.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a low-cost high-room temperature plastically deformable magnesium alloy and a preparation method thereof. Background technique [0002] The resource shortage and environmental deterioration in the 21st century have become the primary issues affecting the sustainable development of human society. Compared with the increasingly depleted mineral resources of various metals, magnesium has more potential due to its abundant reserves. The density of magnesium is about 1.74g / cm 3 , is 2 / 3 of aluminum alloy, 1 / 4 of steel, and is the lightest commercial metal structure material available. At the same time, it has the advantages of high specific strength and rigidity, strong shock absorption, electromagnetic shielding and radiation resistance, easy cutting and processing, and recyclable. It has broad application prospects in the fields of automobiles, electronics, electrical appl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C1/03C22F1/06
CPCC22C1/03C22C23/00C22F1/002C22F1/06
Inventor 余炜
Owner 合肥诺瓦新材料科技有限公司
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