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Non-rare-earth high-strength wrought magnesium alloy and preparing method thereof

A wrought magnesium alloy, non-rare earth technology, applied in the field of metal materials, can solve the problems of high price, difficult to popularize and use, and achieve the effects of low cost, good room temperature mechanical properties, and reduced grain size

Active Publication Date: 2017-10-10
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still deficiencies in alloying Mg-Zn and Mg-Al alloys
In short, first, the strength still needs to be improved; second, although the addition of rare earth elements improves the strength, it is expensive, and it is not easy to popularize and use; third, both Mg-Zn and Mg-Al alloys contain unstable phases ( Mg 4 Zn 7 or MgZn 2 , metastable phase; Mg 17 Al 12 , melting point: 437°C)

Method used

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  • Non-rare-earth high-strength wrought magnesium alloy and preparing method thereof
  • Non-rare-earth high-strength wrought magnesium alloy and preparing method thereof
  • Non-rare-earth high-strength wrought magnesium alloy and preparing method thereof

Examples

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Embodiment 1

[0032] Preparation of a non-rare earth high strength wrought magnesium alloy

[0033] (1) A non-rare earth high-strength wrought magnesium alloy, comprising the following components by mass percentage: Sn: 8.37wt.%, Zn: 2.09wt.%, Mn: 0.28wt.%, Cu: 0.17wt.%, Na: 0.09wt.%, 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, pure copper powder, magnesium-manganese intermediate alloys and metallic sodium as raw materials, after mechanical grinding to remove scale, the ingredients are calculated according to the mass percentage of the magnesium alloy components;

[0034] (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 pure zinc ingots and p...

Embodiment 2

[0039] Preparation of a non-rare earth high strength wrought magnesium alloy

[0040] (1) A non-rare earth high-strength wrought magnesium alloy, comprising the following components by mass percentage: Sn: 8.03wt.%, Zn: 1.98wt.%, Mn: 0.26wt.%, Cu: 0.46wt.%, Na: 0.1wt.%, the total amount of unavoidable Fe, Ni and Si impurities is less than 0.03%, and the rest is Mg. Using pure magnesium ingots, pure tin ingots, pure zinc ingots, pure copper powder, magnesium-manganese intermediate alloys and metallic sodium as raw materials, after mechanical grinding to remove scale, the ingredients are calculated according to the mass percentage of the magnesium alloy components;

[0041] Step (2)~(4) as embodiment 1

Embodiment 3

[0043] Preparation of a non-rare earth high strength wrought magnesium alloy

[0044] (1) A non-rare earth high-strength wrought magnesium alloy, comprising the following components by mass percentage: Sn: 8.17wt.%, Zn: 1.92wt.%, Mn: 0.31wt.%, Cu: 0.85wt.%, 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, pure copper powder, magnesium-manganese intermediate alloys and metallic sodium as raw materials, after mechanical grinding to remove scale, the ingredients are calculated according to the mass percentage of the magnesium alloy components;

[0045] Step (2)~(4) as embodiment 1

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Abstract

The invention relates to a non-rare-earth high-strength wrought magnesium alloy and a preparing method thereof, and belongs to the technical field of metal materials. The non-rare-earth high-strength wrought magnesium alloy comprises, by weight percentage, 6.0%-10.0% of Sn, 1.5%-6.0% of Zn, 0.15%-1.0% of Mn, 0.1%-2.0% of Cu, 0.01%-0.2% of Na, less than 0.03% of inevitable impurities including Fe, Ni and Si and the balance Mg. The Sn element and the Zn element are added, and therefore alloy solution strengthening and second phase strengthening can be carried out; 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 effectively reduced, and the mechanical property of the alloy is improved; through adding of the Cu element, a MgZnCu phase strengthening alloy can be formed; through adding of the Na element, the size of a second phase can be refined obviously, and the dispersion strengthening effect is strengthened; and in addition, three-level solution treatment and low temperature extrusion treatment are adopted, it can be promoted that the elements in the alloy are separated out in the manner of a wee second phase, and the non-rare-earth high-strength wrought magnesium alloy has the excellent mechanical property in cooperation with the effects of the several aspects.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and in particular relates to a non-rare earth high-strength deformed magnesium alloy and a preparation method thereof Background technique [0002] The density of magnesium is about 1.74g / cm 3 , It is 2 / 3 of aluminum alloy and 1 / 4 of steel. Magnesium and magnesium alloys have three advantages of rich resources, energy saving, and environmental friendliness. Compared with other metal structural materials, magnesium alloy is the lightest commercial metal structural material. It has the advantages of strong shock absorption, electromagnetic shielding and radiation resistance, easy cutting and processing, and recyclable. It is used in automobiles, electronics, electrical appliances, transportation, Aerospace and other fields have broad application prospects. It is a lightweight metal structure material developed after steel and aluminum alloys. It also has the prospect of being developed in...

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 钟丽萍王永建龚敏罗宏罗昌森曾宪光
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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