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Ultrahigh-plasticity magnesium alloy and preparation method of deformation material of ultrahigh-plasticity magnesium alloy

A magnesium alloy and plasticity technology, which is applied in the field of preparation of ultra-high plasticity magnesium alloy and its deformed material, can solve the problems of difficult to realize large-scale industrial application, high dependence on equipment, complicated process, etc., and achieve the elimination of heat treatment process and simple process , the effect of improving production efficiency

Active Publication Date: 2019-07-30
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that this kind of large plastic deformation method can significantly improve the room temperature deformation ability of magnesium alloys, but it is highly dependent on equipment, the process is complicated and the cost is extremely high, and it is difficult to achieve large-scale industrial application

Method used

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  • Ultrahigh-plasticity magnesium alloy and preparation method of deformation material of ultrahigh-plasticity magnesium alloy
  • Ultrahigh-plasticity magnesium alloy and preparation method of deformation material of ultrahigh-plasticity magnesium alloy
  • Ultrahigh-plasticity magnesium alloy and preparation method of deformation material of ultrahigh-plasticity magnesium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) The smelting of alloy: with pure magnesium ingot, Mg-Gd master alloy and Mg-Zr master alloy as raw material, carry out batching according to Gd1.0%, Zr 0.6%, balance is the weight percent of Mg, alloy batching is preheated to 50℃, sprinkle with covering agent, then heat up to 760℃, in SF 6 and CO 2 Melting is carried out under the protection of mixed gas, fully stirred after melting, left to stand, and cooled to 720°C for casting.

[0027] 2) Machining: the alloy ingot is turned into a cylindrical extrusion billet with a diameter of 80 mm and a length of 100 mm.

[0028] 3) Extrusion forming: Preheat the extrusion billet and mold at 400°C for 1 hour before extrusion, and then press the extrusion temperature at 400°C, extrusion ratio at 45, and extrusion speed at 20m / min. Just take shape.

[0029] The mechanical properties of the magnesium alloy deformed material prepared in this example are specifically as follows: the tensile yield strength at room temperature is...

Embodiment 2

[0031] 1) The smelting of alloy: with pure magnesium ingot, Mg-Gd master alloy and Mg-Zr master alloy as raw material, carry out batching according to Gd2.0%, Zr 0.6%, balance is the weight percentage of Mg, alloy batching is preheated to 50℃, sprinkle with covering agent, then heat up to 760℃, in SF 6 and CO 2 Melting is carried out under the protection of mixed gas, fully stirred after melting, left to stand, and cooled to 720°C for casting.

[0032] 2) Machining: the alloy ingot is turned into a cylindrical extrusion billet with a diameter of 80 mm and a length of 100 mm.

[0033] 3) Extrusion forming: Preheat the extrusion billet and mold at 400°C for 1 hour before extrusion, and then press the extrusion temperature at 400°C, extrusion ratio at 45, and extrusion speed at 20m / min. Just take shape.

[0034] The mechanical properties of the magnesium alloy deformed material prepared in this example are specifically as follows: the tensile yield strength at room temperature...

Embodiment 3

[0039] 1) The smelting of alloy: with pure magnesium ingot, Mg-Gd master alloy and Mg-Zr master alloy as raw material, carry out batching according to Gd3.0%, Zr 0.6%, balance is the weight percentage of Mg, alloy batching is preheated to 50℃, sprinkle with covering agent, then heat up to 760℃, in SF 6 and CO 2 Melting is carried out under the protection of mixed gas, fully stirred after melting, left to stand, and cooled to 720°C for casting.

[0040] 2) Machining: the alloy ingot is turned into a cylindrical extrusion billet with a diameter of 80 mm and a length of 100 mm.

[0041]3) Extrusion forming: Preheat the extrusion billet and mold at 400°C for 1 hour before extrusion, and then press the extrusion temperature at 400°C, extrusion ratio at 45, and extrusion speed at 20m / min. Just take shape.

[0042] The mechanical properties of the magnesium alloy deformed material prepared in this example are specifically as follows: the tensile yield strength at room temperature ...

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Abstract

The invention discloses an ultrahigh-plasticity magnesium alloy and a preparation method of a deformation material of the ultrahigh-plasticity magnesium alloy. The magnesium alloy comprises the following components of, by weight, 1.0%-3.0% of Gd, 0.3%-1.0% of Zr and the balance Mg. The preparation method of the deformation material of the magnesium alloy comprises the following steps that S1, alloy smelting is carried out, wherein a pure magnesium ingot, a Mg-Gd intermediate alloy and a Mg-Zr intermediate alloy are taken as raw materials, proportioning is carried out according to the magnesiumalloy components and the weight percentage, and alloy ingredients are smelted and then are cast into an alloy ingot; S2, machining is carried out, and specifically the alloy ingot prepared in the step S1 is machined into an extruded blank; and S3, extrusion forming is carried out, wherein the extruded blank prepared in the step S2 is preheated to an extrusion temperature, and primary extrusion forming is carried out by adopting a hot extrusion process so as to obtain the deformation material of the magnesium alloy. The ultrahigh-plasticity magnesium alloy shows ultrahigh room-temperature plasticity, can be conventionally and rapidly formed, is low in cost, is simple in process and can undergo large-strain forming and cold working.

Description

technical field [0001] The invention belongs to the field of metal materials, and in particular relates to an ultrahigh plasticity magnesium alloy and a method for preparing a deformed material thereof. Background technique [0002] Magnesium alloy is the lightest metal structural material in engineering applications. It is known as "green engineering material in the 21st century". , 3C electronics and biomedical fields have great application prospects. However, due to the close-packed hexagonal structure of the magnesium alloy itself, there are few independent slip systems that can be started for deformation at room temperature, which does not meet the Von-Mises criterion of coordinated and uniform deformation of five independent slip systems, so its plasticity at room temperature is low, and conventional deformation processes are used. It is difficult to achieve ultra-high plasticity with room temperature elongation greater than 45%, which severely limits the wide applica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/06C22C1/03
CPCC22C1/03C22C23/06
Inventor 胡耀波潘复生张超郑天旭
Owner CHONGQING UNIV
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