Low-cost high-compression-strength wrought magnesium alloy and preparation method thereof

A wrought magnesium alloy and high compression technology, applied in the field of magnesium alloys, can solve problems such as limiting the scope of use of wrought magnesium alloys, and achieve the effects of increased preparation cost and simple smelting process

Inactive Publication Date: 2018-06-05
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This tension-compression yield asymmetry of wrought magnesium alloys greatly limits the application range of wrought magnesium alloys.

Method used

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  • Low-cost high-compression-strength wrought magnesium alloy and preparation method thereof
  • Low-cost high-compression-strength wrought magnesium alloy and preparation method thereof
  • Low-cost high-compression-strength wrought magnesium alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A multi-element composite strengthened high-strength magnesium alloy, the magnesium alloy raw material element content is as follows in terms of mass percentage: Zn element content 6.0%, the balance is Mg.

[0025] A method for preparing a multi-element composite strengthened high-strength magnesium alloy, comprising the following steps:

[0026] 1) Weigh the magnesium ingot according to the alloy composition, melt it at 690°C-710°C, add pure Zn after the magnesium ingot is melted, keep it warm for 30 minutes, then control the temperature of the furnace body at 700°C, and continue to pass through the melt Inject argon for 15 minutes to refine the alloy, then remove the slag from the alloy melt and let it stand at 690°C-710°C for 30 minutes to allow impurities to settle; finally cast semi-continuously at 675°C-685°C to obtain a semi-continuous ingot;

[0027] 2) The semi-continuous ingot obtained in step 1) is subjected to extrusion treatment. The specific method is: hea...

Embodiment 2

[0029] Low-cost high-compression-strength wrought magnesium alloy, in terms of mass percentage, the magnesium alloy raw material element content is as follows: Zn element content 6.0%, Mn element content 0.1%, Sn element content 0.1%, Ca element content 0.1%, Cu element content 0.1% %, unavoidable impurities ≤ 0.15%, the balance is Mg.

[0030] A method for preparing a deformed magnesium alloy with low cost and high compressive strength, comprising the following steps:

[0031] 1) Weigh pure Zn, pure Sn, Mg-Mn master alloy, Mg-Ca master alloy, Mg-Cu master alloy and magnesium ingot according to the alloy composition, and place the magnesium ingot, Mg-Mn master alloy and pure Sn at 690°C Melting at -710°C, after melting, add pure Zn, Mg-Ca master alloy and Mg-Cu master alloy to keep warm for 30 minutes, then control the temperature of the furnace body at 700°C, and continuously pass argon into the melt for 15 minutes to refine the alloy , and then put the alloy melt at 690°C-7...

Embodiment 3

[0034] A low-cost high-compression-strength wrought magnesium alloy. In terms of mass percentage, the magnesium alloy raw material element content is as follows: Zn element content 6.0%, Mn element content 0.3%, Sn element content 0.3%, Ca element content 0.3%, Cu element content 0.3% %, unavoidable impurities ≤ 0.15%, the balance is Mg.

[0035] A method for preparing a deformed magnesium alloy with low cost and high compressive strength, comprising the following steps:

[0036] 1) Weigh pure Zn, pure Sn, Mg-Mn master alloy, Mg-Ca master alloy, Mg-Cu master alloy and magnesium ingot according to the alloy composition, and place the magnesium ingot, Mg-Mn master alloy and pure Sn at 690°C Melting at -710°C, after melting, add pure Zn, Mg-Ca master alloy and Mg-Cu master alloy to keep warm for 30 minutes, then control the temperature of the furnace body at 700°C, and continuously pass argon into the melt for 15 minutes to refine the alloy , and then put the alloy melt at 690°C...

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Abstract

The invention relates to a low-cost high-compression-strength wrought magnesium alloy and a preparation method thereof. The magnesium alloy material is composed of six elements, namely Mg, Zn, Mn, Sn,Ca and Cu, wherein the content of the Zn element is 4.0%-8.5%, the content of the Mn element is 0.1%-0.4%, the content of the Sn element is 0.1%-0.4%, the content of the Ca element is 0.1%-0.4%, thecontent of the Cu element is 0.1%-0.4%, the content of inevitable impurities is less than or equal to 0.15%, and the balance is the Mg; and compared with a traditional commercial grade magnesium alloymaterial, high compressive yield strength can be obtained after the magnesium alloy material is subjected to a conventional extrusion treatment, and the compressive yield strength of the alloy is obviously higher than tensile yield strength. The magnesium alloy material does not contain precious alloy elements, and is simple in preparation process and low in cost, has very important practical value for manufacturing a pressed magnesium alloy component.

Description

technical field [0001] The invention belongs to the field of magnesium alloys, relates to a low-cost, high-compression-strength deformed magnesium alloy, and also relates to a preparation method of the magnesium alloy. Background technique [0002] Magnesium alloy is the metal structure material with the smallest density, which has the advantages of high specific strength, high specific stiffness, excellent damping and noise reduction performance, good cutting performance, and good for recycling. Known as "the green engineering material of the 21st century". Especially in recent years, the energy problem has attracted more and more attention from the world. Due to the above advantages of magnesium alloy, it has attracted more and more attention, especially in the automobile industry. Magnesium alloys can be divided into cast magnesium alloys and deformed magnesium alloys. Compared with cast magnesium alloys, deformed magnesium alloys have been deformed to eliminate a series...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/04C22C1/03C22F1/06
CPCC22C23/04C22C1/03C22F1/06
Inventor 余大亮张丁非兰伟曹献龙戴庆伟柴森森邓洪达曹鹏军
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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