High-strength corrosion-resistant wrought magnesium alloy and preparing method thereof

A deformed magnesium alloy and corrosion-resistant technology, applied in the field of metal materials, can solve problems such as insufficient mechanical properties and corrosion resistance, achieve good low-temperature forming ability, improve corrosion resistance, and enhance the effect of solid solution strengthening

Active Publication Date: 2017-10-10
DONGHAO MECHANICAL & ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lack of its mechanical properties and corrosion resistance is one of the main factors that limit the application of magnesium alloys in various fields. The development and application of magnesium alloys have experienced several ups and downs in history, and they have not been able to solve their corrosion problems well. have a great relationship

Method used

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  • High-strength corrosion-resistant wrought magnesium alloy and preparing method thereof
  • High-strength corrosion-resistant wrought magnesium alloy and preparing method thereof
  • High-strength corrosion-resistant wrought magnesium alloy and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Preparation of a High-Strength Corrosion-Resistant Deformable Magnesium Alloy

[0031] (1) A high-strength corrosion-resistant deformation magnesium alloy, which comprises the following components by mass percentage: Sn: 7.9wt.%, Zn: 1.9wt.%, Mn: 0.4wt.%, Ca: 0wt.%, Na : 0.06wt.%, the total amount of unavoidable Fe, Ni, Si impurities is less than 0.03%, and the rest is Mg. Using pure magnesium ingots, pure tin ingots, pure zinc ingots, magnesium-manganese master alloys, magnesium-calcium master alloys and metal sodium as raw materials, after mechanical grinding to remove scale, the ingredients are calculated according to the mass percentage of the magnesium alloy components;

[0032](2) Put the pure magnesium ingot into the low-carbon steel melting crucible of the smelting furnace until the pure magnesium ingot is melted, and when the temperature of the magnesium melt rises to 720°C, the pure zinc ingot and the pure Tin ingots are added to the magnesium melt until the ...

Embodiment 2

[0037] Preparation of a High-Strength Corrosion-Resistant Deformable Magnesium Alloy

[0038] (1) A high-strength, corrosion-resistant and deformable magnesium alloy, comprising the following components by mass percentage: Sn: 8.1wt.%, Zn: 2.4wt.%, Mn: 0.3wt.%, Ca: 0.2wt.%, Na: 0.08wt.%, the total amount of unavoidable Fe, Ni, Si impurities is less than 0.03%, and the rest is Mg. Using pure magnesium ingots, pure tin ingots, pure zinc ingots, magnesium-manganese master alloys, magnesium-calcium master alloys and metal sodium as raw materials, after mechanical grinding to remove scale, the ingredients are calculated according to the mass percentage of the magnesium alloy components;

[0039] Steps (2)-(4) are as in Example 1.

Embodiment 3

[0041] Preparation of a High-Strength Corrosion-Resistant Deformable Magnesium Alloy

[0042] (1) A high-strength corrosion-resistant deformation magnesium alloy, which comprises the following components by mass percentage: Sn: 7.6wt.%, Zn: 2.0wt.%, Mn: 0.6wt.%, Ca: 0.5wt.%, Na: 0.07wt.%, the total amount of unavoidable Fe, Ni, Si impurities is less than 0.03%, and the rest is Mg. Using pure magnesium ingots, pure tin ingots, pure zinc ingots, magnesium-manganese master alloys, magnesium-calcium master alloys and metal sodium as raw materials, after mechanical grinding to remove scale, the ingredients are calculated according to the mass percentage of the magnesium alloy components;

[0043] Steps (2)-(4) are as in Example 1.

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Abstract

The invention relates to a high-strength corrosion-resistant wrought magnesium alloy and a preparing method thereof. The magnesium alloy comprises, by mass percentage, 6.0%-9.0% of Sn, 1.5%-4.0% of Zn, 0.1%-1.0% of Mn, 0%-1.0% of Ca, 0.01%-0.1% of Na, less than 0.03% of inevitable impurities in total and the balance Mg. The Sn element serves as a main alloy element, and therefore the solution strengthening effect and the second phase strengthening effect are guaranteed, SnO2 can be formed in the corrosion process, and the protection performance of a Mg(OH)2 film is improved; the Zn element is added into a solution strengthening magnesium base; through adding of the Mn element, the content of impurity elements in the magnesium base can be reduced, the grain size of the extrusion state alloy is reduced, and the mechanical property and the decay resistance of the alloy are improved; through adding of the Ca element, a CaMgSn phase can be formed to participate in formation of an oxidation film, and the density of the oxidation film is increased; and through adding of the Na element, the size of a second phase can be refined. In cooperation with joint effects of several aspects, the alloy has the excellent mechanical property and decay resistance.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and in particular relates to a high-strength, corrosion-resistant and deformable magnesium alloy and a preparation method thereof. Background technique [0002] Magnesium alloy is the lightest metal structure material. The density of magnesium alloy is about 2 / 3 of aluminum alloy and 1 / 4 of steel. Compared with other metal structure materials, magnesium alloy has higher specific strength, specific stiffness, With the advantages of shock absorption performance, electromagnetic shielding performance and thermal conductivity, easy cutting and processing, and easy recycling, it has important application value and broad application prospects in the fields of automobiles, 3C electronics, and transportation. However, the lack of its mechanical properties and corrosion resistance is one of the main factors that limit the application of magnesium alloys in various fields. The development and appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C1/03C22F1/06
CPCC22C1/03C22C23/00C22F1/06
Inventor 钟丽萍龚敏郑兴文金永中李明田刘春海王永建
Owner DONGHAO MECHANICAL & ELECTRONICS
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