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Method for preparing AZ31-RE wrought magnesium alloy

A technology of AZ31-RE and wrought magnesium alloy, which is applied in the field of alloys, can solve problems such as low safety factor, serious environmental pollution, and magnesium residue, and achieve the effects of reducing production cost, reducing residue rate, and refining grains

Inactive Publication Date: 2016-08-03
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of melting and refining, it is necessary to add covering agent, refining agent or other atmosphere for special protection, so that a large amount of materials will be oxidized and burned, and a large amount of magnesium remains in the waste slag. The original addition of rare earth elements and The actual product content is inconsistent
Moreover, the precision requirements of melting equipment are high, the safety factor is low, and the environmental pollution is also serious

Method used

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  • Method for preparing AZ31-RE wrought magnesium alloy
  • Method for preparing AZ31-RE wrought magnesium alloy
  • Method for preparing AZ31-RE wrought magnesium alloy

Examples

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Embodiment 1

[0051] The cold pressing die 100 and the extrusion die 200 are used in the process of preparing the AZ31-RE deformed magnesium alloy provided in this embodiment, see figure 1 with figure 2 . Wherein, the cold pressing die 100 comprises a cold pressing punch 101, a cold pressing inner sleeve 102, a cold pressing sleeve 103 and a pressure pad 104; the extrusion die 200 comprises an extrusion punch 201, an extrusion inner sleeve 202, an extrusion Sleeve 203 and die 204. The diameter of the cold pressing punch 101 is 4 mm smaller than that of the extruding punch 201 , and the inner diameter of the cold pressing inner sleeve 102 is 4 mm smaller than that of the extruding inner sleeve 202 .

[0052] The method for preparing the AZ31-RE wrought magnesium alloy provided in this embodiment comprises the following steps:

[0053] a. Machining the AZ31 magnesium alloy and the Mg-RE master alloy: using a lathe to process the AZ31 magnesium alloy into the first chips with a size of 5mm...

Embodiment 2

[0063] In the method for preparing the AZ31-RE wrought magnesium alloy provided in this example, the size of the AZ31 magnesium alloy processed in step a is different from that in Example 1, and the rest of the steps are the same as in Example 1. In this embodiment, the size of the processed AZ31 magnesium alloy is 3mm×2.2mm×0.5mm.

Embodiment 3

[0065] In the method for preparing AZ31-RE wrought magnesium alloy provided in this example, the mass ratio of the first scrap to the second scrap is different from that in Example 1, and the rest of the steps are the same as in Example 1. In this embodiment, the mass ratio of the first scrap material to the second scrap material is 99.5:0.5, and in the obtained AZ31-RE deformed magnesium alloy, the mass percentage of rare earth elements is 0.1%.

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Abstract

The invention provides a method for preparing an AZ31-RE wrought magnesium alloy, and relates to the technical field of alloys. The method comprises the following steps that a, a first scrap material and a second scrap material are mixed, cold pressing is conducted, and a blank is obtained, wherein the first scrap material is an AZ31 magnesium alloy scrap material, the second scrap material is an Mg-RE intermediate alloy scrap material, and the mass ratio of the first scrap material to the second scrap material is 4-299:1; b, the blank is subjected to heat extrusion, and then cold pressing is conducted, wherein heat extrusion comprises the step that the blank is subjected to heat preservation at the temperature ranging from 350 DEG C to 400 DEG C for 10-20 min; and c, the step b is repeatedly conducted at least one time, and then heat extrusion of the step b is conducted again. According to the method for preparing the AZ31-RE wrought magnesium alloy, oxidization of raw materials can be effectively reduced, the burnout rate of the raw materials is reduced, and pollution to the environment can be effectively reduced.

Description

technical field [0001] The invention relates to the field of alloy technology, in particular to a method for preparing an AZ31-RE deformed magnesium alloy. Background technique [0002] AZ31 is the most widely used wrought magnesium alloy among magnesium alloys. It has a fine and dense structure, high strength and good ductility, and is suitable for plastic deformation processing, such as extrusion, stamping, rolling, forging, drawing, etc. It has significant advantages in automotive, national defense, aviation, aerospace, electronics and other industrial fields, showing great application prospects. [0003] The content of alloying elements in AZ31 magnesium alloy is low, and the second phase Mg 17 al 12 The amount is small and cannot be strengthened by heat treatment. Usually, the performance of AZ31 magnesium alloy is improved by adding elements such as rare earth Nd, Ce, Y, La, etc., that is, AZ31-RE wrought magnesium alloy is prepared. After adding rare earth element...

Claims

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Application Information

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IPC IPC(8): C22C1/04C22C23/02C22C23/06
CPCB22F2998/10C22C1/0408C22C23/02C22C23/06B22F3/02B22F2003/208
Inventor 胡茂良王殿君许红雨王晔吉泽升
Owner HARBIN UNIV OF SCI & TECH
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