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Magnesium alloy resistant to low temperature environment and preparation method thereof

A magnesium alloy and low-temperature-resistant technology, applied in the field of magnesium alloys, can solve the problems of reduced plasticity of magnesium alloy parts, reduce the service life of equipment, endanger the lives of astronauts, etc., achieve the goal of improving mechanical properties, reducing failure rates, and enhancing ductility at room temperature Effect

Inactive Publication Date: 2017-09-22
NANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reduction of the plasticity of magnesium alloy parts will lead to an increase in the probability of fracture in the vacuum and low temperature environment, which will greatly reduce the service life of the equipment when used in outer space, and may suddenly cause accidents, cause huge losses and endanger the lives of astronauts

Method used

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  • Magnesium alloy resistant to low temperature environment and preparation method thereof
  • Magnesium alloy resistant to low temperature environment and preparation method thereof
  • Magnesium alloy resistant to low temperature environment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] In this embodiment, a magnesium alloy resistant to low temperature environments, the mass fraction of each element in the magnesium alloy is:

[0040] Al: 1.3%; Nd: 0.5%; Y: 0.5%; Ag: 1%; Zr: 0.3%;

[0041] A method for preparing a magnesium alloy resistant to a low temperature environment, comprising the steps of:

[0042]1) Weigh magnesium ingots, aluminum ingots, magnesium-yttrium master alloys, magnesium-neodymium master alloys, zirconium ingots and silver ingots according to the mass fraction of each element in the above-mentioned magnesium alloy, clean the equipment and keep it dry;

[0043] 2) Put the magnesium ingot into a graphite crucible, put the graphite crucible into a well-type resistance furnace, spray a protective gas into the graphite crucible and start smelting, the protective gas is argon with a purity of 99.9%;

[0044] 3) After the magnesium ingot is melted, keep the melt temperature at 740°C, add silver ingots and aluminum ingots into the melt, st...

Embodiment 2

[0052] In this embodiment, a magnesium alloy resistant to low temperature environments, the mass fraction of each element in the magnesium alloy is:

[0053] Al: 1.4%; Nd: 1.5%; Y: 1.5%; Ag: 1.5%; Zr: 0.6%;

[0054] A method for preparing a magnesium alloy resistant to a low temperature environment, comprising the steps of:

[0055] 1) Weigh magnesium ingots, aluminum ingots, magnesium-yttrium master alloys, magnesium-neodymium master alloys, zirconium ingots and silver ingots according to the mass fraction of each element in the above-mentioned magnesium alloy, clean the equipment and keep it dry;

[0056] 2) Put the magnesium ingot into a graphite crucible, put the graphite crucible into a well-type resistance furnace, spray a protective gas into the graphite crucible and start smelting, the protective gas is argon with a purity of 99.9%;

[0057] 3) After the magnesium ingot is melted, keep the melt temperature at 740°C, add silver ingots and aluminum ingots into the melt,...

Embodiment 3

[0065] In this embodiment, a magnesium alloy resistant to low temperature environments, the mass fraction of each element in the magnesium alloy is:

[0066] Al: 1.5%; Nd: 2.1%; Y: 1.4%; Ag: 2.0%; Zr: 0.9%;

[0067] A method for preparing a magnesium alloy resistant to a low temperature environment, comprising the steps of:

[0068] 1) Weigh magnesium ingots, aluminum ingots, magnesium-yttrium master alloys, magnesium-neodymium master alloys, zirconium ingots and silver ingots according to the mass fraction of each element in the above-mentioned magnesium alloy, clean the equipment and keep it dry;

[0069] 2) Put the magnesium ingot into a graphite crucible, put the graphite crucible into a well-type resistance furnace, spray a protective gas into the graphite crucible and start smelting, the protective gas is argon with a purity of 99.9%;

[0070] 3) After the magnesium ingot is melted, keep the melt temperature at 740°C, add silver ingots and aluminum ingots into the melt,...

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Abstract

The invention discloses a magnesium alloy resistant to a low-temperature environment. Elements in the magnesium alloy include, by mass fraction, 1.2%-2% of Al, 1%-3.5% of a rare earth element, 0.9%-3.5% of Ag, 0.2%-2% of Zr and the balance Mg. The invention further discloses a preparing method of the magnesium alloy resistant to the low-temperature environment. A magnesium ingot, an aluminum ingot, a silver ingot, a magnesium-yttrium intermediate alloy, a magnesium-neodymium intermediate alloy and a zirconium ingot are sequentially added, evenly stirred and cast and subjected to heat treatment, and the magnesium alloy resistant to the low temperature is obtained. The low-temperature ductility and the tensile strength of the alloy are greatly improved, the fracture probability of a magnesium alloy part in the low-temperature environment is greatly lowered, the service life, spent in outer space, of magnesium alloy equipment is prolonged, and the failure rate of the magnesium alloy equipment is reduced.

Description

technical field [0001] The invention relates to the technical field of magnesium alloys, in particular to a low-temperature-resistant magnesium alloy and a preparation method thereof. Background technique [0002] As the lightest metal structural material, magnesium alloy has the advantages of high specific strength, high specific stiffness, good shock resistance, excellent electromagnetic shielding performance, and good recyclability. It has broad applications in the fields of automobiles, portable tools, electronics, aerospace, etc. application prospects. my country has the most abundant magnesium resources in the world, and the development of magnesium alloy preparation and processing technology is of great significance to realize the transformation from magnesium resource advantages to economic advantages. [0003] As magnesium alloys are more and more widely used in society, there are more and more researches on the maintenance and improvement of alloy properties of ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/06C22C23/02C22C23/00C22C1/03C22F1/06
CPCC22C1/03C22C23/00C22C23/02C22C23/06C22F1/06
Inventor 仲志国卢志文李婧屈重年叶铁马春华
Owner NANYANG NORMAL UNIV