Authigenic quasicrystal reinforced high plastic deformation magnesium alloy

A deformable magnesium alloy, high plasticity technology, applied in the field of high plastic deformation magnesium alloy, magnesium alloy, can solve the problems of insufficient forming ability and low plasticity

Active Publication Date: 2006-10-25
SHANGHAI INNOVATON MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of low plasticity and insufficient forming ability of the existing deformed magnesium alloys, and provide a high-plastic deformation magnesium alloy reinforced by autogenous quasicrystals, so that it can form fine and dispersed particles in the grain boundaries of the alloy and inside the matrix. The quasicrystal strengthening phase particles make full use of the characteristics of quasicr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Alloy composition (percentage by weight): 10% Zn, 3.6% Gd, impurity elements Fe<0.005%, Ni<0.002%, and the rest is Mg.

[0014] The specific steps of the preparation process of self-generated quasicrystal-reinforced high plastic deformation magnesium alloy (extruded rod) are as follows: (1) Prepare the alloy according to the above ingredients, add industrial pure magnesium into the intermediate frequency induction furnace, and use FS 6 0.5% / CO 2 Mixed gas protection; (2) After the pure magnesium is completely melted, add industrial pure zinc and magnesium-gadolinium intermediate alloy at 720°C; (3) After the alloy is completely melted, continue to increase the temperature to 720°C-740°C, and then keep it warm Stand still for 30 minutes, remove the surface scum, and then carry out metal mold casting. During the casting process, a protective gas is passed above the melt for protection. (4) Homogenize the ingot at 400°C for 14 hours. (5) Extrude the ingot at 370°C to extr...

Embodiment 2

[0016] Alloy composition (percentage by weight): 2% Zn, 3% Gd, 0.4% Zr, impurity elements Fe<0.005%, Ni<0.002%, and the rest is Mg.

[0017] The specific steps of the preparation process of the quasicrystal strengthened high plastic deformation magnesium alloy (extruded rod) are as follows: (1) Prepare the alloy according to the above composition, add industrial pure magnesium in the medium frequency induction furnace, and use FS 6 0.5% / CO 2 Mixed gas protection; (2) After the pure magnesium is completely melted, add industrial pure zinc, magnesium-gadolinium master alloy at 720 ° C, and finally add magnesium-zirconium master alloy; (3) After the alloy is completely melted, continue to increase the temperature to 730°C-750°C, then keep it warm for 30 minutes, remove the scum on the surface, and then carry out metal mold casting. During the casting process, pass a protective gas above the melt for protection. (4) The ingot is homogenized at 400°C for 18 hours. (5) The ingot is...

Embodiment 3

[0018] Embodiment 3: Alloy composition (percentage by weight): 6.0% Zn, 1.0% Gd, 0.5% Zr, impurity elements Fe<0.005%, Ni<0.002%, and the rest is Mg.

[0019] The specific steps of the preparation process of the quasicrystal strengthened high plastic deformation magnesium alloy (pipe) are as follows: (1) Prepare the alloy according to the above composition, add industrial pure magnesium in the medium frequency induction furnace, and use FS 6 0.5% / CO 2 Mixed gas protection; (2) After the pure magnesium is completely melted, add industrial pure zinc, magnesium-gadolinium master alloy at 720 ° C, and finally add magnesium-zirconium master alloy; (3) After the alloy is completely melted, continue to increase the temperature to 730°C-750°C, then keep it warm for 30 minutes, remove the scum on the surface, and then carry out metal mold casting. During the casting process, pass a protective gas above the melt for protection. (4) The ingot was homogenized at 380°C for 10 hours. (5) T...

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Abstract

The high molding distortion magnesium alloy with the autogeny allowing the crystal wnganced belongs to the metal technical domain. The invention team and the weight percent: 2-10% Zn, 0.5-6%Gd, 0-1.0%Zr, the impurity element Fe is below 0.005%, the rest is Mg. the invention alloy contains the allowing crystal phase, it is formed into the casting group as the formation of the branch crystal, the allowing crystal phase crushed to distribute along the distorting direction through the extrusion or the rolling hot distorting technology, at the same time, the dispersion distributing twice allowing crystal phase is separated out on the inner group body and the edge of the crystal during the extrusion and the rolling to improve the capability of the alloy. The allowing crystal and the group body has the good interface connecting function, it can harmonize distortion and delay the stress concentrate. So the mold distortional capability of the magnesium alloy can be improved highly. It can be used to produce the magnesium alloy distortional material with the higher distortional capability to resisting the extrusion, the rolling and the pressing. The alloy has the upper model ability and matched with the middling intensity; the resisting intension under the room temperature: 260MPa-320MPa; the extending percent: 20%-26%.

Description

technical field [0001] The invention relates to a magnesium alloy, in particular to a self-generated quasi-crystal reinforced high plastic deformation magnesium alloy. It belongs to the technical field of metal materials. Background technique [0002] Magnesium alloy is the lightest metal structural material in practical application. It has the advantages of high specific strength, high specific modulus, high damping and shock absorption, etc. It has extremely important application value in the fields of automobile, electronic communication, aerospace and other fields. Wrought magnesium alloys have a wide range of application prospects because they can obtain fine structures and eliminate casting defects, and have higher comprehensive mechanical properties than cast alloys. Existing typical wrought magnesium alloys include AZ31, AZ61, and ZK60 grades. They have certain tensile strength at room temperature, but their plastic deformation ability is not high. In addition to th...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C23/04
Inventor 袁广银刘勇丁文江
Owner SHANGHAI INNOVATON MEDICAL TECH CO LTD
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