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High-plasticity magnesium alloy and preparation method thereof

A magnesium alloy, high plasticity technology, applied in the field of metal materials, can solve the problems of difficult deformation conditions of casting magnesium alloys, few magnesium alloy grades, and the performance of wrought magnesium alloys is difficult to adapt to casting conditions, etc., so as to improve the performance and reduce the alloy layer. Dissolving energy and improving the effect of precipitation

Active Publication Date: 2011-03-16
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing grades of magnesium alloys are still relatively small. Generally, cast magnesium alloys such as AZ91 are difficult to be used in deformation conditions, and the performance of deformed magnesium alloys such as AZ31 is also difficult to be suitable for casting conditions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) According to the mass percentage of elements in the alloy: aluminum 2.95%, tin 2.85%, manganese 0.15%, strontium 0.18%, the rest is magnesium, take the required pure magnesium, pure aluminum, pure tin, aluminum-10% manganese Intermediate, aluminum-10% strontium intermediate alloy;

[0030] (2) First spread a layer of No. 2 solvent evenly on the bottom of the crucible, add pure magnesium ingots, then add the required aluminum ingots on top of the magnesium ingots, and finally sprinkle a layer of No. 2 solvent on the top, and heat and melt;

[0031] (3) Add the above-mentioned content and preheated pure tin into the melt, and the addition method is the upper melting and pouring method;

[0032] (4) adding the preheated aluminum-10% manganese master alloy of the above content into the melt, the addition method is the upper melting and pouring method, stirring evenly, and removing iron and silicon impurities;

[0033] (6) Add the preheated aluminum-10% strontium master...

Embodiment 2

[0037] (1) According to the mass percent of elements in the alloy: aluminum 5.85%, tin 2.65%, manganese 0.02%, strontium 0.03%, the rest is magnesium, take the required pure aluminum, pure tin, magnesium-10% manganese master alloy, Magnesium-15% strontium master alloy;

[0038] (2) First spread a layer of No. 2 solvent evenly on the bottom of the crucible, add pure magnesium ingots, then add the required aluminum ingots on top of the magnesium ingots, and finally sprinkle a layer of No. 2 solvent on the top, and heat and melt;

[0039] (3) Add the above-mentioned content and preheated pure tin into the melt, and the addition method is the upper melting and pouring method;

[0040] (4) adding the preheated magnesium-10% manganese master alloy of the above content into the melt, the addition method is the upper melting and pouring method, stirring evenly, and removing iron and silicon impurities;

[0041] (6) Add the preheated magnesium-15% strontium master alloy of the above c...

Embodiment 3

[0045] (1) According to the mass percentage of the elements in the alloy: aluminum 1.65%, tin 0.85%, manganese 1.85%, strontium 1.45%, added elements: zinc 0.95, antimony 2.7%, the rest is magnesium, take the required pure magnesium, pure Aluminum, pure tin, magnesium-10% manganese master alloy, aluminum-10% strontium master alloy, pure zinc, pure antimony;

[0046] (2) First spread a layer of No. 2 solvent evenly on the bottom of the crucible, add pure magnesium ingots, then add the required aluminum ingots on top of the magnesium ingots, and finally sprinkle a layer of No. 2 solvent on the top, and heat and melt;

[0047] (3) Add the above-mentioned content and preheated pure tin, pure zinc, and pure antimony into the melt, and the addition method is the upper melting and pouring method;

[0048] (4) adding the preheated magnesium-10% manganese master alloy of the above content into the melt, the addition method is the upper melting and pouring method, stirring evenly, and rem...

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Abstract

The invention relates to the field of metal materials, in particular to a high-plasticity magnesium alloy and a preparation method thereof. The alloy comprises the following chemical components in percentage by mass: 0.1 to 6.0 percent of aluminum, 0.1 to 3.0 percent of tin, 0.01 to 2.0 percent of manganese, 0.01 to 2.0 percent of strontium and the balance of magnesium and other inevitable impurities; simultaneously, the magnesium alloy can also contain one or more of additional elements such as zinc and stibium and rare earth elements. The preparation method comprises the following steps of: melting the magnesium and the aluminum, adding the tin, the additional elements, the rare earth elements and the strontium in turn, stirring and refining, and preparing a melt into a plate by a cast-rolling and rolling process; or directly pouring the melt into a cast ingot; or pouring the melt into the cast ingot, extruding the cast ingot into a section or a thick plate and rolling the thick plate into a thin plate. The preparation method enhances the intensity and toughness of the alloy and overcomes the defects that a cast magnesium alloy is difficult to adapt to a deformation condition and a deformed magnesium alloy is difficult to adapt to a casting condition.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a high-plasticity magnesium alloy and a preparation method thereof. Background technique [0002] As the lightest metal material for engineering structures, magnesium alloy has many excellent unique properties, such as high specific strength, high electrical and thermal conductivity, high damping and shock absorption, high electrostatic shielding, and good regeneration and reuse. It is favored in the selection of materials in the fields of aviation, aerospace, automobile and communication. Especially in terms of light weight, it has significant advantages that are difficult to replace. However, due to the close-packed hexagonal structure of magnesium crystals, there are few slip systems and poor plastic deformation ability, which has become one of the important bottlenecks restricting the development of magnesium alloys. Therefore, exploring and developing new high-ductility magn...

Claims

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Application Information

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IPC IPC(8): C22C23/02C22C1/03
Inventor 王慧远姜启川肖为南小龙王珵
Owner JILIN UNIV
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