Magnesium-aluminum alloy and manufacturing method thereof

A technology of magnesium-aluminum alloy and magnesium alloy, which is applied in the fields of zirconium, strontium, manganese magnesium-aluminum alloy, magnesium-aluminum alloy and its preparation, lead and tin, which can solve the problem of low comprehensive mechanical properties and achieve simple production and preparation process , Toughness increases significantly, enhances the effect of solid solution strengthening

Inactive Publication Date: 2009-07-08
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that these patents are based on magnesium-aluminum or magnesium-aluminum-zinc alloys, adding some rare elements or rare earth elements such as Ti, Ni, Ce, Pr, Er, Sm, La, etc., and the comprehensive mechanical properties are not high.

Method used

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  • Magnesium-aluminum alloy and manufacturing method thereof

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Effect test

Embodiment 1

[0026] The magnesium-aluminum alloy with good comprehensive mechanical properties, the preparation steps are: according to the mass percentage content of 7-10% Al, 0.5-2% Zn, 0.5-3% Sn, 0.05-3.5% Pb, and the rest is Mg. The distribution ratio is used for batching, and the above-mentioned pure Al ingots, Mg ingots, pure Sn bars, pure Pb blocks, and Zn ingots are heated and melted together in the N2 / CO2 / SF6 mixed protective atmosphere, and N2, CO2 and SF6 in the mixed protective atmosphere The volume ratio is 8:16:76. When the temperature rises to 700-725° C., keep warm for 4-8 minutes and then cool to obtain a tough magnesium alloy.

Embodiment 2

[0028] The magnesium-aluminum alloy with good comprehensive mechanical properties is prepared through the following steps: 7-10% of Al, 0.5-2% of Zn, 0.5-3% of Sn, 0.05-3.5% of Pb, 0.01- 1.5% Zr, the rest is the alloy composition ratio of Mg to carry out batching, the pure Al ingot, Mg ingot, pure Sn bar, pure Pb block, Zn ingot and Mg-Zr intermediate alloy block that are prepared above are mixed in N2 / CO2 / SF6 is heated and melted together in a mixed protective atmosphere, and the volume ratio of N2, CO2 and SF6 in the mixed protective atmosphere is 8:16:76. When the temperature rises to 700-725° C., keep warm for 4-8 minutes and then cool to obtain a tough magnesium alloy.

Embodiment 3

[0030] The magnesium-aluminum alloy with good comprehensive mechanical properties is prepared through the following steps: 7-10% Al, 0.5-2% Zn, 0.5-3% Sn, 0.05-3.5% Pb, 0.01-1.5% Sr, The rest is Mg alloy composition ratio for batching, the above prepared pure Al ingot, Mg ingot, pure Sn bar, pure Pb block, Zn ingot and Mg-Sr intermediate alloy block in N2 / CO2 / SF6 mixed protective atmosphere Heating and melting together, the volume ratio of N2, CO2 and SF6 in the mixed protective atmosphere is 8:16:76. When the temperature rises to 700-725° C., keep warm for 4-8 minutes and then cool to obtain a tough magnesium alloy.

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Abstract

The invention provides a magnesium-aluminium alloy having an excellent synthetic mechanical performance and a method for preparing the same, wherein, the magnesium-aluminium alloy comprises the following components by weight: Al of 7-10%, Zn of 0.5-2%, Sn of 0.5-3%, Pb of 0.05-3.5% and Mg of the rest.The method for preparing the magnesium-aluminium alloy comprises steps of proportioning according to the mass percent of components that Al of 7-10%, Zn of 0.5-2%, Sn of 0.5-3%, Pb of 0.05-3.5% and Mg of the rest, mixing the proportioned pure Al ingots, Mg ingots, pure Sn bars, pure Pb blocks, Zn ingots in a protective atmosphere of N2/CO2/SF6, heating and melting them, volume ratio of N2/CO2/SF6 in the protective atmosphere being 8:16:76, and when the temperature increasing to 700-725DEG C, keeping the temperature for 4-8minutes, then cooling them to obtain the magnesium-aluminium alloy with high strength.The manufacture of the magnesium aluminium alloy only use common elements of stannum, plumbi, zincium and the like, avoid using large numbers of rare elements. The technique of preparing the magnesium aluminium alloy is simple and the cost of the alloy is low.

Description

1. Technical field [0001] The invention relates to a magnesium-aluminum alloy with good comprehensive mechanical properties and a preparation method thereof, in particular to a magnesium-aluminum alloy containing lead, tin, zirconium, strontium and manganese, belonging to the technical field of magnesium alloys. 2. Background technology [0002] Magnesium-aluminum alloys are widely used in the manufacture of industrial products because of their high specific strength and specific stiffness. However, the plasticity and toughness of existing common magnesium alloys such as AZ91 cannot meet the requirements of wide application. [0003] There are currently some studies on magnesium-aluminum alloys: [0004] 03113528.5 involves magnesium-aluminum-zinc alloy and plastic forming technology, specifically refers to a rare earth-containing magnesium-aluminum-zinc alloy and its corresponding preparation method. The components and mass percentage of the material are: 2.0-6.0% aluminu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02C22C1/02
Inventor 赵浩峰王玲
Owner NANJING UNIV OF INFORMATION SCI & TECH
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