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High-strength rapid-corrosion magnesium alloy and preparation method thereof

A rapid corrosion, magnesium alloy technology, applied in the field of magnesium alloy and its preparation, can solve the problems of poor creep resistance, low high temperature strength, slow application development and so on

Inactive Publication Date: 2017-06-27
田哿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in recent years, magnesium alloys have replaced aluminum alloys and other materials, and the application development in various industries has been relatively slow. The main reason is that magnesium alloys still have the disadvantages of low high temperature strength and poor creep resistance.

Method used

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  • High-strength rapid-corrosion magnesium alloy and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0017] A high-strength rapid corrosion magnesium alloy, the weight percentage of the chemical composition of the magnesium alloy matrix: 2% Al, 1% Zn, 0.2% Zr, 0.1% Si, 0.1% Mn, 0.3% Ca, 1% Fe, 0.05% Cu, the balance being magnesium and unavoidable impurities.

[0018] The preparation steps are as follows,

[0019] (1) Preheat the pretreated pure magnesium, Al, Zn, Zr, intermediate alloys Si-Mn, Ca, Fe, and Cu to 100-180°C respectively, and then place the pure magnesium, Al, and Zn in Heat up to 700-750°C in a furnace protected by a mixed gas of CO2 and SF6 to melt it;

[0020] (2) After melting, keep it at 700-750°C for 25-45 minutes, then raise the temperature to 750-850°C, then add Zr, Si-Mn master alloy, Ca, Fe, Cu in sequence, and stir under the protection of CO2 and SF6 Evenly, to obtain a melt, continue to heat up to 770-800 ° C for 30-50 minutes;

[0021] (3) Cool the molten material to 650-700°C, let it stand for 10-20 minutes, and then cast it. The steel mold for c...

Embodiment 2

[0024] A high-strength rapid corrosion magnesium alloy, the weight percentage of the chemical composition of the magnesium alloy matrix: 7% Al, 2% Zn, 0.6% Zr, 0.3% Si, 0.5% Mn, 0.3% Ca, 1.5% Fe, 5% Cu, the balance is magnesium and unavoidable impurities.

[0025] The preparation steps are as in Example 1.

[0026] The tensile strength of the prepared magnesium alloy is 354MPa and the elongation is 19%.

Embodiment 3

[0028] A high-strength rapid corrosion magnesium alloy, the weight percentage of the chemical composition of the magnesium alloy matrix: 2% Al, 1% Zn, 0.2% Zr, 0.1% Si, 0.5% Mn, 0.1% Ca, 1.2% Fe, 1% Cu, the balance is magnesium and unavoidable impurities.

[0029] The preparation steps are as in Example 1.

[0030] The tensile strength of the prepared magnesium alloy is 385 MPa and the elongation is 21%.

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Abstract

The invention discloses high-strength rapid-corrosion magnesium alloy and a preparation method thereof. The high-strength rapid-corrosion magnesium alloy comprises the chemical components including, by weight, 2-7% of Al, 1-2% of Zn, 0.2-0.6% of Zr, 0.1-0.3% of Si, 0.1-0.5% of Mn, 0.1-0.3% of Ca, 1-1.5% of Fe, 0.05-5% of Cu and the balance magnesium and inevitable impurities, wherein the Si and the Mn are added as intermediate alloy. The magnesium alloy has the more excellent strength, ductility, hardness and mechanical performance such as creep resistance compared with those of traditional commercial magnesium alloy and the advantage of rapid dissolution.

Description

technical field [0001] The invention relates to a magnesium alloy and a preparation method thereof, in particular to a high-strength rapid corrosion magnesium alloy and a preparation method thereof. Background technique [0002] According to the American Society for Metals (ASM), light metal materials are defined as aluminum, magnesium, titanium and their alloys. According to the analysis of the material characteristics of these three light metals, it can be found that light alloy materials have strong shock resistance, excellent machinability, recyclability, light weight / energy saving, anti-EMI, good corrosion resistance, and excellent engineering performance. Good performance, flexible design (integrated parts / rapid manufacturing, assembly, dismantling and recycling; diverse manufacturing processes and surface treatment application technologies), high quality / fashion sense, etc., and are widely used in transportation, aerospace, national defense, Petrochemical, energy, pa...

Claims

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Application Information

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IPC IPC(8): C22C23/02C22C23/00C22C1/03
CPCC22C23/02C22C1/03C22C23/00
Inventor 田哿
Owner 田哿
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