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High-strength deforming magnesium alloy containing Ti

A wrought magnesium alloy, high-strength technology, applied in the field of Ti-containing high-strength wrought magnesium alloy, can solve the problems of poor casting performance, uneven alloy composition, low plastic toughness, etc., and achieve improved room temperature tensile strength, high production efficiency, and low cost Effect

Inactive Publication Date: 2005-05-11
江苏锦绣铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the use of Bi and Sb elements with large proportions, the composition of the alloy is extremely uneven, the ductility and toughness are low, and the casting performance is also poor. Moreover, casting defects will inevitably occur when the casting process is used, thus limiting the alloy. Application range

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Alloy composition (percentage by weight): 9.0% Al, 0.03% Ti, 0.3% Mn, 0.05% Zn, impurity elements are less than 0.02%, and the rest is Mg.

[0013] The specific steps of the preparation process of Ti-containing high-strength wrought magnesium alloy are as follows: (1) Configure the alloy according to the above-mentioned composition, add industrial pure magnesium into the resistance crucible furnace, and use FS 6 0.5% / CO 2 Mixed gas protection; (2) After the magnesium is completely melted, add industrial pure aluminum, industrial pure zinc, and Al-10Mn master alloy at 680°C; (3) Add Al-10Ti master alloy at 720°C, keep warm for 20 minutes and stir for 3 Minutes to fully melt Ti; (4) Continue to keep warm at 720°C for about 15 minutes. After all the alloying elements are dissolved, stir the alloy liquid with a tool to make the composition uniform, and let it stand at the casting temperature of 720°C for 10 minutes, then After removing the scum on the surface, low-pressure...

Embodiment 2

[0015] Alloy composition (percentage by weight): 3.0% Al, 0.1% Mn, 0.5% Zn, 0.2% Ti, impurity elements are less than 0.02%, and the rest is Mg.

[0016] The specific steps of the preparation process of Ti-containing high-strength deformed magnesium alloy are: (1) configure the alloy according to the above-mentioned components, add industrial pure magnesium into the resistance crucible furnace, heat and melt, and sprinkle a small amount of covering agent (JDF) 0.3Kg on the bottom of the crucible at the same time; 2) After the magnesium is completely melted, add industrial pure aluminum, industrial pure zinc, and Al-10Mn master alloy at 700°C; (3) add Al-10Ti master alloy at 720°C, keep warm for 20 minutes, and stir for 6 minutes to make Ti Fully melted; (4) Continue to keep warm at 720°C for about 15 minutes. After all the alloying elements are dissolved, stir the alloy liquid with a tool to make the composition uniform, and let it stand at a casting temperature of 730°C for 10 ...

Embodiment 3

[0018] Alloy composition (percentage by weight): 5.0% Al, 0.5% Ti, 0.3% Mn, 0.2% Zn, impurity elements are less than 0.02%, and the rest is Mg.

[0019] The specific steps of the preparation process of Ti-containing high-strength deformed magnesium alloy are: (1) configure the alloy according to the above-mentioned components, add industrial pure magnesium into the resistance crucible furnace, heat and melt, and sprinkle a small amount of covering agent (JDF) 0.3Kg on the bottom of the crucible at the same time; 2) After the magnesium is completely melted, add industrial pure aluminum, industrial pure zinc, and Al-10Mn master alloy at 690°C; (3) add Al-10Ti master alloy at 720°C, keep warm for 20 minutes, and stir for 5 minutes to make Ti Fully melted; (4) Continue to keep warm at 720°C for about 15 minutes. After all the alloying elements are dissolved, stir the alloy liquid with a tool to make the composition uniform, and let it stand at a casting temperature of 730°C for 10 ...

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Abstract

The invention was involved in high strength distorted magnesium alloy containing Ti. The alloy consist of 3-9%Al, 0.1-0.5%Mn, 0.05-0.5%Zn, lower than 0.02% impurity and the rest was Mg. The method with low cost and high efficiency improved obviously room temperature strength of extension, yield strength and extensibility .The microscopic structure of magnesium alloy was refined obviously and the coarse Mg17Al12 phase was changed into exiguous strip or graininess. Continuous distribution of magnesium alloy was changed into isolated diffusion distribution. For example, Mg-5Al-0.5Ti alloys, the grain size reduced to 10um from 40um..The room temperature strength of extension was 292MPa,yield strength was 145 MPa, and extensibility was 22%. Compared with AZ91D, the intensity of magnesium alloy was improved obviously, while the cost was equivalent to AZ91D.

Description

technical field [0001] The invention relates to a wrought magnesium alloy, in particular to a Ti-containing high-strength wrought magnesium alloy. Used in the field of metal materials. Background technique [0002] With the rapid development of my country's aerospace industry and automobile industry, the lightweight of spacecraft and automobiles has become an eternal pursuit. Magnesium alloys have high specific strength, specific stiffness, and specific elastic modulus, and have increasingly become the focus of material workers. At present, the development scale of magnesium alloys in practical application is only 1 / 50 of the aluminum industry and 1 / 160 of the iron and steel industry. The main reason is that 90% of magnesium alloy components are obtained from die casting, which limits the variety and type of products; Most magnesium alloy structural parts are limited to small volume parts with low strength requirements. After thermal deformation (such as extrusion, rollin...

Claims

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Application Information

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IPC IPC(8): C22C23/02
Inventor 王渠东陈永军翟春泉丁文江
Owner 江苏锦绣铝业有限公司
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