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Plastic deformation magnesium alloy and preparation method thereof

A plastic deformation and magnesium alloy technology, which is applied in the field of metal materials and metal material processing, can solve the problems of high cost and complicated process, and achieve the effect of improving alloy texture, improving mechanical properties, and inhibiting the growth of recrystallized grains

Inactive Publication Date: 2019-01-11
CITIC DICASTAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention mainly aims at problems such as excessive use of various rare earth elements or high-priced alloy elements in the existing high room temperature plastic magnesium alloys or the use of special processing and large plastic deformation methods, resulting in high cost and complicated process, and provides a low-cost micro-rare earth type high room temperature Plastic magnesium alloy and preparation method thereof

Method used

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  • Plastic deformation magnesium alloy and preparation method thereof
  • Plastic deformation magnesium alloy and preparation method thereof
  • Plastic deformation magnesium alloy and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0039] Embodiment 1: Select the Mg-3Al-3Bi-1Sn-0.04Ca-0.02Y (wt%) alloy composition ratio to form a magnesium alloy, and the preparation method includes the following steps.

[0040] 1) Ingredients: Use pure Mg ingots, pure Al blocks, pure Bi blocks, pure Sn blocks, Mg-Ca master alloys and Mg-Y master alloys as raw materials, and make ingredients according to the above-mentioned target components.

[0041] 2) Melting: Put the pure Mg ingot into the crucible of the smelting furnace, set the furnace temperature to 720°C and keep it. 200°C pure Al block, Mg-20Ca master alloy and Mg-30Y master alloy are added to the magnesium melt; then the melting temperature is raised to 750°C and kept for 15 minutes, then stirred for 5 minutes, and high-purity Ar gas is introduced Carry out refining and degassing treatment, adjust and control the temperature at 720°C, keep warm for 8 minutes; the melting process is in CO 2 / SF 6 under the protection of mixed gas.

[0042] 3) Pouring: remove ...

Embodiment 2

[0047] Embodiment 2: Select the Mg-4Al-2Bi-1Sn-0.03Ca-0.03Y (wt%) alloy composition ratio to form a magnesium alloy, and the preparation method includes the following steps.

[0048] 1) Ingredients: Use pure Mg ingots, pure Al blocks, pure Bi blocks, pure Sn blocks, Mg-Ca master alloys and Mg-Y master alloys as raw materials, and make ingredients according to the above-mentioned target components.

[0049] 2) Melting: Put the pure Mg ingot into the crucible of the smelting furnace, set the furnace temperature to 720°C and keep it. 200°C pure Al block, Mg-20Ca master alloy and Mg-30Y master alloy are added to the magnesium melt; then the melting temperature is raised to 750°C and kept for 15 minutes, then stirred for 5 minutes, and high-purity Ar gas is introduced Carry out refining and degassing treatment, adjust and control the temperature at 720°C, keep warm for 8 minutes; the melting process is in CO 2 / SF 6 under the protection of mixed gas.

[0050] 3) Pouring: remove ...

Embodiment 3

[0055] Embodiment 3: Select the Mg-6Al-3Bi-1Sn-0.03Ca-0.05Y (wt%) alloy composition ratio to form a magnesium alloy, and the preparation method includes the following steps.

[0056] 1) Ingredients: Use pure Mg ingots, pure Al blocks, pure Bi blocks, pure Sn blocks, Mg-Ca master alloys and Mg-Y master alloys as raw materials, and make ingredients according to the above-mentioned target components.

[0057] 2) Melting: Put the pure Mg ingot into the crucible of the smelting furnace, set the furnace temperature to 720°C and keep it. 200°C pure Al block, Mg-20Ca master alloy and Mg-30Y master alloy are added to the magnesium melt; then the melting temperature is raised to 750°C and kept for 15 minutes, then stirred for 5 minutes, and high-purity Ar gas is introduced Carry out refining and degassing treatment, adjust and control the temperature at 720 ° C, keep warm for 8 minutes; the melting process is in CO 2 / SF 6 under the protection of mixed gas.

[0058] 3) Casting: remov...

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Abstract

The invention discloses a plastic deformation magnesium (Mg) alloy and a preparation method thereof. The plastic deformation Mg alloy is a Mg-Al-Bi-Sn-Ca-Y alloy, and consists of, by weight percent, 3.0-6.0% of Al, 1.0-3.0% of Bi, 0.5-2.0% of Sn, 0.02-0.05% of Ca, 0.02-0.05% of Y, and the balance Mg, wherein the total content of the element Ca and the element Y is greater than 0.05% and less than0.1%. The plastic deformation Mg alloy and the preparation method thereof adopt lower extrusion temperature and speed to form a large amount of Mg3Bi2 phases, Mg2Sn phases and Mg17Al12, and inhibit excessive growth of second phases by alloying a trace of the elements Ca and Y at the same time. In addition, the element Bi, the element Sn, a trace of the element Ca and a trace of the element Y are simultaneously dissolved into a matrix to improve the texture characteristics of the deformation alloy so as to develop the high-room-temperature-ductility deformation Mg alloy of which the room temperature elongation can reach upwards of 32%.

Description

technical field [0001] The invention relates to the field of metal materials and metal material processing, in particular to a plastically deformed magnesium alloy and a preparation method thereof; the novel magnesium alloy can be used as a potential heat-resistant magnesium alloy and a biomedical magnesium alloy material. Background technique [0002] As we all know, the density of magnesium is about 1.74g / cm 3 It is 2 / 3 of aluminum and 1 / 4 of steel. Among many metals, magnesium alloy is the lightest metal structure material available so far. It has high specific strength and rigidity, strong shock absorption, electromagnetic shielding and radiation resistance. Easy cutting, green recycling and other advantages, it has broad application prospects in the fields of automobiles, electronics, electrical appliances, transportation, aerospace and other fields. It is a lightweight metal structural material developed after steel and aluminum alloys, and can also be developed It ha...

Claims

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Application Information

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IPC IPC(8): C22C23/02C22C1/03C22F1/06
CPCC22C1/03C22C23/02C22F1/002C22F1/06C22C1/02B22D15/00
Inventor 黄礼新刘春海朱志华王立生李永飞
Owner CITIC DICASTAL
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