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Preparation method of high-Al magnesium alloy and high-Al magnesium alloy extruded bars

A magnesium alloy and rod technology, applied in the field of material preparation, can solve the problem that the mechanical properties and corrosion properties of the alloy cannot be balanced

Active Publication Date: 2017-11-24
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under the harsher conditions of some service environments, the mechanical properties and corrosion properties of these alloys cannot be balanced

Method used

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  • Preparation method of high-Al magnesium alloy and high-Al magnesium alloy extruded bars
  • Preparation method of high-Al magnesium alloy and high-Al magnesium alloy extruded bars
  • Preparation method of high-Al magnesium alloy and high-Al magnesium alloy extruded bars

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method for preparing a high Al magnesium alloy and a high Al magnesium alloy extruded rod, comprising the steps of:

[0035] (1) Selection of chemical substances and materials

[0036] The quality and purity of the chemical substances used are controlled as follows:

[0037] High-purity magnesium ingot: solid solid 99.91%;

[0038] High-purity aluminum ingot: solid solid 99.92%;

[0039] Magnesium samarium (Mg-50%Sm) master alloy: solid solid 99.97%;

[0040] (2) Melting and casting of high Al magnesium alloy

[0041] ① Preparation of open and close mold

[0042] Prepare a split mold with stainless steel material, the cavity is cylindrical, its diameter is 100mm, and a filter is added at the pouring port;

[0043] ② alloy casting

[0044] Turn on the smelting furnace, preheat the crucible to 602°C, and after the crucible turns dark red, sprinkle 103g of molten salt covering agent on the crucible wall and its bottom, add 7.8kg of high-purity magnesium blocks weig...

Embodiment 2

[0057] A method for preparing a high Al magnesium alloy and a high Al magnesium alloy extruded rod, comprising the steps of:

[0058] (1) Selection of chemical substances and materials

[0059] The quality and purity of the chemical substances used are controlled as follows:

[0060] High-purity magnesium ingot: solid solid 99.94%;

[0061] High-purity aluminum ingot: solid solid 99.92%;

[0062] Magnesium samarium (Mg-50%Sm) master alloy: solid solid 99.96%;

[0063] (2) Melting and casting of high Al magnesium alloy

[0064] ① Preparation of open and close mold

[0065] Prepare a split mold with stainless steel material, the cavity is cylindrical with a diameter of 100mm, and add a filter screen at the pouring port;

[0066] ② alloy casting

[0067] Turn on the melting furnace and preheat the crucible to 601°C. After the crucible turns dark red, sprinkle about 100g of molten salt covering agent on the wall and bottom of the crucible, add 7.8kg of high-purity magnesium bl...

Embodiment 3

[0080] A method for preparing a high Al magnesium alloy and a high Al magnesium alloy extruded rod, comprising the steps of:

[0081] (1) Selection of chemical substances and materials

[0082] The quality and purity of the chemical substances used are controlled as follows:

[0083] High-purity magnesium ingot: solid solid 99.95%;

[0084] High-purity aluminum ingot: solid solid 99.96%;

[0085] Magnesium samarium (Mg-50%Sm) master alloy: solid solid 99.96%;

[0086] (2) Melting and casting of high Al magnesium alloy

[0087] ① Preparation of open and close mold

[0088] Prepare a split mold with stainless steel material, the cavity is cylindrical with a diameter of 100mm, and add a filter screen at the pouring port;

[0089] ② alloy casting

[0090] Turn on the smelting furnace, preheat the crucible to 598°C, and after the crucible turns dark red, sprinkle 101g of molten salt covering agent on the crucible wall and its bottom, add 7.8kg of high-purity magnesium blocks ...

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Abstract

The invention provides a preparation method of high-Al magnesium alloy and high-Al magnesium alloy extruded bars, and belongs to the field of production of magnesium alloy materials. The preparation method is characterized in that the following raw material components in percentages by weight are used in the preparation method: 12% of Al, 0.5% of Sm and the balance of Mg. The preparation method for the high-Al magnesium alloy bars is successively divided into two parts including casting preparation and bar forming, and comprises the following steps: (1) casting preparation of high-Al magnesium alloy; and (2) forming of the high-Al magnesium alloy bars: successively carrying out homogenization and extruded forming to obtain the high-Al magnesium alloy bars finally. The preparation method has the advantages that high-Al alloyed element proportioning and an optimal extruded forming technology are adopted, and the content, size, form and distribution of a Mg17Al12 surplus phase in Mg-Al magnesium alloy are optimized, so that the high-strength anti-corrosion magnesium alloy extruded bars with excellent comprehensive mechanical property and high anti-corrosion property are prepared.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to a method for preparing a high-Al magnesium alloy and a high-Al magnesium alloy extruded rod. Background technique [0002] As the lightest engineering structural material at present, magnesium alloy has a series of unique advantages such as high specific strength and specific stiffness, good damping and vibration reduction, strong electromagnetic shielding and thermal conductivity, easy cutting and easy recycling, etc. And 3C (computer, communication, consumer electronics) and other structural parts industries have great development prospects. Among the series of magnesium alloys for industrial use, Mg-Al alloys are the most widely used, and the most common Mg-Al alloys are AZ31, AZ61, AZ80 and AZ91. The alloy has low cost, is easy to obtain high strength and ductility, and has a certain ability to resist atmospheric corrosion. However, under the harsher conditions of some s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C23/02C22F1/06
CPCC22C1/03C22C23/02C22F1/06
Inventor 刘宝胜任晓霞房大庆张跃忠卫英慧侯利锋
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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