Multi-element compound reinforced weak-texture wrought magnesium alloy and preparing method thereof

A deformed magnesium alloy and multi-element technology, applied in the field of magnesium alloy, can solve the problems of insignificant strengthening effect, texture weakening effect, deterioration of magnesium alloy mechanical properties, deterioration of alloy mechanical properties, etc., which is beneficial to deformation treatment and increases production cost , the effect of improving the mechanical properties

Inactive Publication Date: 2018-03-30
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mn element can remove harmful impurities such as Si and Fe in magnesium alloy, and can play a role in refining grains. A small amount of Mn can optimize the as-cast structure of the alloy; Cu and Al can form AlCuMg phase to refine the as-cast structure of the alloy. , the CuMg phase has high thermal stability and is difficult to be crushed during the extrusion process. Too much AlCuMg phase will reduce the mechanical properties of the alloy. Cu element and Zn can form MgZnCu phase, which hinders grain growth; Ca element can inhibit grain growth. grain growth, while forming Al with Al in Mg 2 Ca improves the mechanical properties, and with the increase of Ca content, Al 2 Ca distributes continuously at the grain boundary, which deteriorates the mechanical properties of the alloy; Sn has a high solid solubility in magnesium alloys and has a good strengthening effect, but Sn is expensive, and adding too much Sn will significantly increase the cost of magnesium alloys
[0004] Too much addition of a single alloying element will significantly deteriorate the mechanical properties of magnesium alloys, and too little addition of alloying elements will result in insignificant strengthening and texture weakening effects

Method used

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  • Multi-element compound reinforced weak-texture wrought magnesium alloy and preparing method thereof
  • Multi-element compound reinforced weak-texture wrought magnesium alloy and preparing method thereof
  • Multi-element compound reinforced weak-texture wrought magnesium alloy and preparing method thereof

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Embodiment 1

[0024] A multi-element composite strengthened high-strength low-cost magnesium alloy, the content of each element of the magnesium alloy raw material is as follows in terms of weight percentage: Zn element content 6.0%, Al element content 6.0%, Mn element content 0.1%, Sn element content 0.1% , the Ca element content is 0.1%, the Cu element content is 0.1%, and the balance is Mg.

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

[0026]1) Weigh pure Al, pure Zn, pure Sn, Mg-Mn master alloy, Mg-Ca master alloy, Mg-Cu master alloy and magnesium ingot respectively, and place the magnesium ingot, magnesium-manganese master alloy and pure Sn alloy at 690°C Melting at -710°C, after the magnesium ingot, magnesium-manganese master alloy and pure Sn are melted, add pure Al, pure Zn, Mg-Ca master alloy and Mg-Cu master alloy, keep warm for 30 minutes, and control the temperature of the furnace ...

Embodiment 2

[0029] A multi-element composite strengthened high-strength low-cost magnesium alloy, the content of each element of the magnesium alloy raw material is as follows: Zn element content 6.0%, Al content 6.0%, Mn element content 0.3%, Sn element content 0.3%, The Ca element content is 0.3%, the Cu element content is 0.3%, and the balance is Mg.

[0030] A method for preparing a multi-element composite strengthened high-strength low-cost magnesium alloy, comprising the following steps:

[0031] 1) Weigh pure Al, pure Zn, pure Sn, Mg-Mn master alloy, Mg-Ca master alloy, Mg-Cu master alloy and magnesium ingot respectively, and place the magnesium ingot, magnesium-manganese master alloy and pure Sn alloy at 690°C Melting at -710°C, after the magnesium ingot, magnesium-manganese master alloy and pure Sn are melted, add pure Al, pure Zn, Mg-Ca master alloy and Mg-Cu master alloy, keep warm for 30 minutes, and control the temperature of the furnace body at about 700°C , continuous feed...

Embodiment 3

[0034] A multi-element composite strengthened high-strength and low-cost magnesium alloy. In terms of weight percentage, the content of each element of the magnesium alloy raw material is as follows: Zn element content 6.0%, Al content 1.0%, Mn element content 0.1%, Sn element content 0.1%, The Ca element content is 0.1%, the Cu element content is 0.1%, and the balance is Mg.

[0035] A method for preparing a multi-element composite strengthened high-strength low-cost magnesium alloy, comprising the following steps:

[0036] 1) Weigh pure Al, pure Zn, pure Sn, Mg-Mn master alloy, Mg-Ca master alloy, Mg-Cu master alloy and magnesium ingot respectively, and place the magnesium ingot, magnesium-manganese master alloy and pure Sn alloy at 690°C Melting at -710°C, after the magnesium ingot, magnesium-manganese master alloy and pure Sn are melted, add pure Al, pure Zn, Mg-Ca master alloy and Mg-Cu master alloy, keep warm for 30 minutes, and control the temperature of the furnace bod...

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Abstract

The invention relates to a multi-element compound reinforced weak-texture wrought magnesium alloy and a preparing method thereof. The wrought magnesium alloy comprises the following elementary components in content: 5.5%-6.5% of Zn, 1.0%-6.5% of Al, 0.1%-0.4% of Mn, 0.1%-0.4% of Sn, 0.1%-0.4% of Ca, 0.1%-0.4% of Cu, smaller than or equal to 0.15% of unavoidable impurities and the balance of Mg. Compared with the existing non-rare-earth wrought magnesium alloy, the material of the invention has the following advantages that the alloy has high strength and great elongation after conventional extrusion treatment; the alloy has weak macro-texture and great dynamic isotropy; the alloy preparing cost is low, and the preparing technology is simple; and the application range of the wrought magnesium alloy is further increased.

Description

technical field [0001] The invention belongs to the field of magnesium alloys, and relates to a deformed magnesium alloy with multi-element composite strengthening and weak texture, 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. It has a series of advantages such as high specific strength, high specific stiffness, excellent damping performance, good electromagnetic shielding, and easy cutting. Magnesium alloy is used in aerospace, automotive industry and electronics. Products and other aspects have very broad application prospects. Although magnesium alloys have many of the above advantages, there are also some disadvantages, such as: low absolute strength, poor room temperature deformability, active chemical properties, strong texture of deformed magnesium alloys, and high mechanical anisotropy. These shortcomings limit the application of magnesium all...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/04C22C1/03C22F1/16
CPCC22C23/04C22C1/03C22F1/165
Inventor 余大亮张丁非戴庆伟兰伟曹献龙柴森森邓洪达曹鹏军
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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