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High-strength pressure-proof magnesium alloy and preparation method thereof

A high-strength, magnesium alloy technology, applied in the field of magnesium alloys, can solve the problems of insufficient compression resistance of magnesium alloys, easy cracking of magnesium alloys, easy corrosion of magnesium alloys, etc. The effect of increasing the strength of the alloy

Inactive Publication Date: 2020-11-13
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Magnesium alloys have excellent characteristics and have a wide range of applications. With the increasing development needs of people, the production process of magnesium alloys is becoming more and more perfect, and people's practical requirements for magnesium alloys are getting higher and higher. Alloys have obvious advantages in terms of recycling and light specific gravity, but the compression resistance of magnesium alloys is not enough, and the strength is low, especially in the process of extrusion process, magnesium alloys are also prone to cracks, and magnesium alloys It is easy to be over-oxidized during the production process, causing the magnesium alloy to be easily corroded and the strength is not enough.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The high-strength compressive magnesium alloy of this embodiment is composed of the following components by mass fraction: Y 1.1%, C 6.4%, Gd 1.8%, Mn 4.5%, Zn 3.2%, Zr 2.15%, Cr 1.7%, Al 5.4 %, W 0.35%, Mo 0.35%, and the balance is Mg; the raw materials of the high-strength compressive magnesium alloy are Mg-C master alloy, Mg-Y master alloy, Mg-Gd master alloy, Mg, Mg-Zr Master alloy, Mg-Mn master alloy, Zn, Al-Cr master alloy, Mo-Al master alloy and Mg-W master alloy.

[0024] This embodiment also provides a method for preparing a high-strength compressive magnesium alloy, the method is:

[0025] S1. Mg-C master alloy, Mg-Y master alloy, Mg-Gd master alloy, Mg, Mg-Zr master alloy, Mg-Mn master alloy, Zn, Al-Cr master alloy, Mo-Al master alloy and Mg -W master alloys are mixed to obtain mixed raw materials;

[0026] S2. Under the protection of an argon atmosphere, at a temperature of 720°C, mix the strengthening solvent and the mixed raw materials obtained in S1 eve...

Embodiment 2

[0031] The high-strength compressive magnesium alloy of this embodiment is composed of the following components by mass fraction: Y 1%, C 6.5%, Gd 1.3%, Mn 4.2%, Zn 3.1%, Zr 2.2%, Cr 2%, Al 5.6%, W 0.3%, Mo 0.3%, and the balance is Mg; the raw materials of the high-strength compressive magnesium alloy are Mg-C master alloy, Mg-Y master alloy, Mg-Gd master alloy, Mg, Mg- Zr master alloy, Mg-Mn master alloy, Zn, Al-Cr master alloy, Mo-Al master alloy and Mg-W master alloy.

[0032] This embodiment also provides a method for preparing a high-strength compressive magnesium alloy, the method is:

[0033]S1. Mg-C master alloy, Mg-Y master alloy, Mg-Gd master alloy, Mg, Mg-Zr master alloy, Mg-Mn master alloy, Zn, Al-Cr master alloy, Mo-Al master alloy and Mg -W master alloys are mixed to obtain mixed raw materials;

[0034] S2. Under the protection of an argon atmosphere, at a temperature of 700°C, mix the strengthening solvent and the mixed raw material obtained in S1 evenly to ob...

Embodiment 3

[0039] The high-strength compressive magnesium alloy of this embodiment is composed of the following components by mass fraction: Y 1.2%, C 6.3%, Gd 2.5%, Mn 4.8%, Zn 3.3%, Zr 2.1%, Cr 1.5%, Al 5.2% %, W 0.4%, Mo 0.4%, and the balance is Mg; the raw materials of the high-strength compressive magnesium alloy are Mg-C master alloy, Mg-Y master alloy, Mg-Gd master alloy, Mg, Mg-Zr Master alloy, Mg-Mn master alloy, Zn, Al-Cr master alloy, Mo-Al master alloy and Mg-W master alloy.

[0040] This embodiment also provides a method for preparing a high-strength compressive magnesium alloy, the method is:

[0041] S1. Mg-C master alloy, Mg-Y master alloy, Mg-Gd master alloy, Mg, Mg-Zr master alloy, Mg-Mn master alloy, Zn, Al-Cr master alloy, Mo-Al master alloy and Mg -W master alloys are mixed to obtain mixed raw materials;

[0042] S2. Under the protection of an argon atmosphere, at a temperature of 730°C, mix the strengthening solvent and the mixed raw materials obtained in S1 evenl...

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Abstract

The invention provides a high-strength pressure-proof magnesium alloy which is composed of Y, C, Gd, Mn, Zn, Zr, Cr, Al, W, Mo and Mg elements. The raw materials of the high-strength pressure-proof magnesium alloy is a Mg-C intermediate alloy, a Mg-Y intermediate alloy, a Mg-Gd intermediate alloy, Mg, a Mg-Zr intermediate alloy, a Mg-Mn intermediate alloy, Zn, a Al-Cr intermediate alloy, a Mo-Al intermediate alloy and a Mg-W intermediate alloy. A preparation method includes the steps that the mixed raw materials are smelted with a fortified solvent in an argon atmosphere at a temperature of 700 DEG C-730 DEG C, the temperature is reduced to 660 DEG C-670 DEG C, a blank is obtained through casting and machining, preheating is carried out, graphite is applied to the surface of a extrusion die and preheating is carried out, then hot-extruding is carried out on the pre-heated blank to obtain the hot-extruded blank, solution treatment and cooling are carried out, then rolling is carried out, then wire-electrode cutting is carried out, and then, after stretching and aging treatment are carried out, the high-strength pressure-proof magnesium alloy is obtained. The magnesium alloy preparedby the method has high yield strength, tensile strength and hardness.

Description

technical field [0001] The invention belongs to the technical field of magnesium alloys, and in particular relates to a high-strength compression-resistant magnesium alloy and a preparation method thereof. Background technique [0002] Magnesium alloys have excellent characteristics and have a wide range of applications. With the increasing development needs of people, the production process of magnesium alloys is becoming more and more perfect, and people's practical requirements for magnesium alloys are getting higher and higher. Alloys have obvious advantages in terms of recycling and light specific gravity, but the compression resistance of magnesium alloys is not enough, and the strength is low, especially in the process of extrusion process, magnesium alloys are also prone to cracks, and magnesium alloys It is easy to over-oxidize during the production process, causing the magnesium alloy to be easily corroded and insufficient in strength. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C1/03C22F1/06C22C1/06
CPCC22C1/03C22C1/06C22C23/00C22F1/06
Inventor 杨元玺张鑫王慧慧刘宝胜卫英慧
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY