Process for preparing magnesium alloy with layered gradient structure

A gradient structure and preparation technology, applied in the direction of metal rolling, metal rolling, manufacturing tools, etc., can solve the problems of reducing material plasticity, restricting the rapid development of the magnesium alloy industry, and unfavorable processing and deformation, so as to improve material strength, Improved comprehensive mechanical properties and low production costs

Inactive Publication Date: 2018-02-02
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods can produce higher plastic strain in metal materials, the grain size can be effectively refined, and the strength can be improved, but the plasticity of the material will be reduced to a certain extent, which is very unfavorable to the subsequent processing and deformation of the plate. The rapid development of the magnesium alloy industry

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  • Process for preparing magnesium alloy with layered gradient structure
  • Process for preparing magnesium alloy with layered gradient structure
  • Process for preparing magnesium alloy with layered gradient structure

Examples

Experimental program
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Effect test

Embodiment 1

[0027] The invention discloses a preparation process of a layered gradient structure magnesium alloy, which comprises the following steps:

[0028] a. Select two or more magnesium alloy plates of the same specification, and carry out surface mechanical grinding treatment on each magnesium alloy plate; in the present embodiment, what is selected is three AZ31 magnesium alloy plates; in order to avoid deformation, the front and back sides are alternately processed method, the single processing time for one side is 10s, and the cumulative processing time for one side is 4min.

[0029] b. Clean the bonding surface of each AZ31 magnesium alloy plate with a wire brush and acetone, remove the oxide layer and dirt, and rinse with deionized water;

[0030] c. Stack the processed plates together and make them tightly bonded, with no relative movement between the plates as the standard; this embodiment uses thin copper wires to bind and fix the three plates, and other forms of the prior ...

Embodiment 2

[0037] a. Select three AZ31 magnesium alloy plates and perform mechanical grinding on the surface of each plate; in order to avoid deformation, the front and back sides are treated alternately. The single treatment time for one side is 30s, and the cumulative treatment time for one side is 10 minutes;

[0038] b. Clean the bonding surface of each AZ31 magnesium alloy plate with a wire brush and acetone, remove the oxide layer and dirt, and rinse with deionized water;

[0039] c. Stack the treated plates together and make them tightly bonded, with no relative movement between the plates as the standard;

[0040] d. Put the stacked plates into the incubator, and keep warm for 30 minutes after rising to the set 150°C;

[0041] e. Take out the plate and put it into the rolling mill immediately for rolling with a reduction of 30%, that is to say, complete one stack rolling;

[0042] f. Air cooling;

[0043] g. Cut the rolled and cooled plate into equal parts, cut into three piece...

Embodiment 3

[0047] a. Select three AZ91 magnesium alloy plates and perform surface mechanical grinding treatment on each plate; in order to avoid deformation, adopt the method of alternating front and back sides. The single treatment time for one side is 20s, and the cumulative treatment time for one side is 7 minutes;

[0048] b. Clean the bonding surface of each AZ91 magnesium alloy plate with a wire brush and acetone, remove the oxide layer and dirt, and rinse with deionized water;

[0049] c. Stack the treated plates together and make them tightly bonded, with no relative movement between the plates as the standard;

[0050] d. Put the stacked plates into the incubator, and keep warm for 10 minutes after rising to the set 450°C;

[0051] e. Take out the plate and put it into the rolling mill immediately for rolling with a reduction of 50%, that is to say, complete one stack rolling;

[0052] f. Air cooling;

[0053] g. Cut the rolled and cooled plate into equal parts, cut into three p...

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Abstract

The present invention relates to the field of metal material processing, and specifically relates to a preparation process of a layered gradient structure magnesium alloy, comprising the following steps: a. selecting more than two magnesium alloy plates of the same specification, and performing surface mechanical processing on each magnesium alloy plate; Grinding treatment; b. cleaning the bonding surface of each plate to remove oxide layer and dirt; c. stacking the treated plates together and making them tightly bonded, with no relative movement between the plates as the standard; d. Put the stacked plates into the incubator, wait until the temperature rises to the set 150°C-450°C, keep warm for 5-30min; e. Take out the plates and immediately put them into the rolling mill for reduction of 30%-70 % of rolling, that is to complete a stack rolling; f. Air cooling to room temperature. The invention is simple and easy to implement, safe and reliable, and has low production cost, and is suitable for improving the comprehensive mechanical properties of magnesium alloy plates in industrialized production.

Description

technical field [0001] The invention relates to the field of metal material processing, in particular to a preparation process of a layered gradient structure magnesium alloy. Background technique [0002] Magnesium alloy is the lightest metal structural material at present, with the characteristics of low density, high specific strength and specific stiffness, good damping and vibration reduction, good thermal conductivity, good electronic shielding effect, good machinability and dimensional stability, etc., in recent years to attract people's attention, especially in the automotive and aerospace applications. However, due to the hexagonal close-packed (HCP) crystal structure of magnesium and magnesium alloys, there are few slip systems, compared with other materials (aluminum and steel, etc.), the plastic deformation ability is poor, which limits its further application in industry. Grain refinement can improve the strength and toughness of magnesium and magnesium alloy m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/38B21B47/00
CPCB21B1/38B21B47/00B21B2001/386
Inventor 刘勇孟祥晨罗岚
Owner NANCHANG UNIV
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