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Tough easy-deforming magnesium alloy

An easily deformable, magnesium alloy technology, applied in the field of magnesium alloy materials, can solve the problems of poor deformation coordination, never seen, and few movable slip systems.

Inactive Publication Date: 2008-07-09
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is mainly because magnesium has a close-packed hexagonal structure, which has few movable slip systems at room temperature and poor deformation coordination ability.
Currently, wrought magnesium alloy products mainly include magnesium-lithium, magnesium-aluminum-zinc-manganese, magnesium-rare earth series, but no wrought magnesium alloy products containing strontium and rare earth (RE) have been seen.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0012] The composition (weight percent) of the alloy is: 3.05Al, 0.86Zn, 0.41Mn, 0.4Ce, 0.6Y, 6.0Gd, and the weight percent of restricted impurity elements Si<0.03, Fe<0.004, Cu<0.003, Ni<0.002, Ca <0.002, the rest is Mg. Prepare the alloy according to the above ingredients, add preheated industrial pure magnesium, pure zinc, pure aluminum, and electrolytic manganese into the melting furnace, and set the furnace temperature to 700°C. After the alloy is completely melted, add magnesium-yttrium master alloy, magnesium-cerium master alloy and magnesium-gadolinium master alloy and raise the furnace temperature to 720°C to continue melting the alloy for 30 minutes, stirring twice to make the melt even, and adding protective gas at the same time Protect. Cool down to 680°C and stand still for 20 minutes, skim off the scum on the surface of the melt, and then cast it into an alloy plate, and use a wire cutting machine to further cut the alloy plate into a plate with a thickness of 4...

Embodiment 3

[0014] The composition (weight percent) of the alloy is: 3.05Al, 0.86Zn, 0.41Mn, 0.08Sr, 0.8Ce, 1.2Y, and the weight percent of restricted impurity elements Si<0.03, Fe<0.004, Cu<0.003, Ni<0.002, Ca <0.002, the rest is Mg. Prepare the alloy according to the above ingredients, add preheated industrial pure magnesium, pure zinc, pure aluminum, and electrolytic manganese into the melting furnace, and set the furnace temperature to 700°C. After the alloy is completely melted, add magnesium-yttrium master alloy, magnesium-cerium master alloy and aluminum-strontium master alloy, and raise the furnace temperature to 720°C to continue melting the alloy for 30 minutes, stirring twice to make the melt even, and protect Gas protection. Cool down to 680°C and stand still for 20 minutes, skim off the scum on the surface of the melt, and then cast it into an alloy plate, and use a wire cutting machine to further cut the alloy plate into a plate with a thickness of 4mm. The cut alloy plate...

Embodiment 4

[0016] The composition (weight percent) of the alloy is: 2.93Al, 0.98Zn, 0.58Mn, 0.1Sr, 0.75Ce, the weight percent of the limiting impurity elements Si<0.03, Fe<0.004, Cu<0.003, Ni<0.002, Ca<0.002, The remainder is Mg. Prepare the alloy according to the above ingredients, add preheated industrial pure magnesium, pure zinc, pure aluminum, and electrolytic manganese into the melting furnace, and set the furnace temperature to 700°C. After the alloy is completely melted, add aluminum-strontium master alloy and magnesium-cerium master alloy and raise the furnace temperature to 720°C to continue melting the alloy for 30 minutes, stirring twice to make the melt even, and at the same time add protective gas protection. Cool down to 680°C and stand still for 20 minutes, skim off the scum on the surface of the melt, and then cast it into an alloy plate, and use a wire cutting machine to further cut the alloy plate into a plate with a thickness of 4mm. The cut alloy plates were placed ...

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Abstract

The invention relates to a novel magnesium alloy material, in particular to a magnesium alloy which has strong toughness and is easy to deform, through compounding and adding cerium, yttrium, gadolinium and strontium, the magnesium alloy which has excellent plastic deformation capacity and high mechanical properties is obtained. The percentage by weight of the components are that aluminum is 2.8-3.2, zinc is 0.8-1.1, magnesium is 0.4-0.7, cerium is 0.4-0.8, yttrium is 0.6-1.2, gadolinium is 3-6, and strontium is 0.08-1.2. The percentage by weight of limited impurity elements are that silicon is less than 0.03, ferric is less than 0.004, cuprum is less than 0.003, nickel is less than 0.002, calcium is less than 0.002, and the other content is magnesium. The single pass maximum lower compression ratio of the invention is greater than 35 percent under the homogenization conditions for 4 hours, and the single pass maximum lower compression ratio is greater than 50 percent under the homogenization conditions for 8 hours. The tensile strength of the invention is greater than 330 MPa in room temperature, and the elongation is greater than 8 percent.

Description

technical field [0001] The invention relates to a magnesium alloy material, in particular to a strong and easily deformable magnesium alloy. It is mainly used for lightweight magnesium alloy parts used in auto parts. Background technique [0002] Magnesium alloy is currently the lightest metal structural material, with advantages such as low density, high specific strength and specific stiffness, excellent machining performance, good casting performance, etc., and is widely used in the industrial field. Nevertheless, magnesium alloy parts are mostly produced by die casting process. Cast magnesium alloys are difficult to plastically deform, have poor pressure forming properties, and lack comprehensive strength. Therefore, scientific research institutions and enterprises at home and abroad have shifted their research and development focus to wrought magnesium alloy products, especially wrought magnesium alloy sheets, which have broad application prospects in 3C, aviation, tr...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C23/02C22C23/04
Inventor 周宏李文平马勇赵世哲林鹏宇
Owner JILIN UNIV
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