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Magnesium-zinc-lanthanon-zirconium magnesium alloy and method for preparing same

A magnesium-based alloy and rare earth technology, which is applied in the field of magnesium-zinc-rare-earth-zirconium magnesium-based alloys and their preparation, can solve the problems of insufficient selective utilization or alternative utilization of rare earth resources, not many varieties, etc., and achieves low gravity segregation. , The composition segregation is small, and the effect of meeting the market demand

Active Publication Date: 2008-06-18
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problems that there are not many types of magnesium-zinc-rare earth alloys available in industry and the selective utilization or substitution of rare earth resources is insufficient

Method used

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  • Magnesium-zinc-lanthanon-zirconium magnesium alloy and method for preparing same
  • Magnesium-zinc-lanthanon-zirconium magnesium alloy and method for preparing same
  • Magnesium-zinc-lanthanon-zirconium magnesium alloy and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The batching is weighed according to the ratio of Mg-3wt%Zn-3wt%La-0.6wt%Zr. The steps and conditions are as follows: Mg ingot with a purity of 99.9%, Zn ingot with a purity of 99.98%, Mg-La, Mg-Ce, Mg-MC, Mg-MY, Mg-MM and Mg- Zr6 master alloy ingots are used as raw materials, and the rare earth or zirconium in the master alloy ingot accounts for 19.7wt% of La in the Mg-La master alloy, 22.7wt% of Ce in the Mg-Ce master alloy, and 22.7wt% of Mg in the master alloy. 19.71wt% of MC in the MC master alloy, 20wt% of MY in the Mg-MY master alloy, 35wt% of Zr in the Mg-Zr master alloy; the rest is Mg.

[0050] The raw materials of Mg ingot, Zn ingot and master alloy ingot are divided, degreased, dried and descaled to obtain bulk materials; according to the general formula Mg-3wt%Zn-3wt%RE-0.6wt%Zr, the ingredients are weighed; Alloy smelting is carried out in a gas-shielded resistance furnace. First, the graphite crucible is cleaned with molten salt with a weight ratio of KC...

Embodiment 2

[0055] The difference from Example 1 is that the Mg-3wt%Zn-3wt%La-0.6wt%Zr system is replaced by Mg-3wt%Zn-3wt%Ce-0.6wt%Zr; wherein Ce in the Mg-Ce master alloy accounts for 22.7wt% system; All the other operations are the same as in Example 1; the tensile strength (σ b ), yield strength (σ 0.2 ) and elongation (δ) are listed in Table 2.

[0056] Table 1: Main mechanical properties of Mg-3wt%Zn-3wt%Ce-0.6wt%Zr alloy in Example 2 at room temperature and high temperature

[0057] Alloy

Embodiment 3

[0059] The difference from Example 1 Mg-3wt% Zn-3wt% MC-0.6wt% Zr is that the Mg-3wt% Zn-3wt% MC-0.6wt% Zr system is used to replace the Mg-3wt% Zn-3wt% La-0.6 wt% Zr system; wherein the MC in the Mg-MC master alloy accounts for 19.71wt%; the specific composition of cerium-rich rare earth MC is 60wt% Ce and 40wt% La, and the sum of the two weight percentages is 100%; the rest of the operations are the same as in Example 1 ; The tensile strength of the alloy at room temperature, 150°C and 200°C (σ b ), yield strength (σ 0.2 ) and elongation (δ) are listed in Table 3.

[0060] Table 3: Main mechanical properties of Mg-3wt%Zn-3wt%MC-0.6wt%Zr alloy in Example 3 at room temperature and high temperature

[0061] Alloy

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Abstract

The invention relates to an Mg-based alloy of Mg-Zn-RE-Zr and a preparation method thereof, in particular to an Mg-based alloy of Mg-3wt percent of Zn-3wt percent of RE-Zr alloy which is added with zirconium and a preparation method thereof. In the composition general formula of Mg-3wt percent of Zn-3wt percent of RE-0.6wt percent of Zr, RE is respectively La, Ce, Ce rich rare earth MC, Yttrium rich rare earth MY and mixed dilute MM, the weight ratio of MC to MY of which is 1 to 2. In the casting process of the Mg-Zn-RE alloy with middle Zn content (containing 3wt percent of Zn) and middle RE content (containing 3wt percent of RE), the gravity segregation and the composition segregation are small. Problems that the total amount of alloy with high Zn content or high RE content and strengthening elements are too large, etc. are avoided. At the same time, the ratio of property to price is moderate and the invention is beneficial to meet the market demands. With the five RE combinations adopted, the alloy types of Mg-Zn-RE serial that can be selected and applied in industry are increased. The same process condition can be used for producing five types of RE combinations. The five alloys can be mutually replaced in technology with good technical and economic benefits. The raw material cost is lowed and the RE resource can be utilized effectively.

Description

technical field [0001] The invention relates to a magnesium-zinc-rare earth-zirconium-based magnesium alloy and a preparation method thereof, in particular to a magnesium-based alloy in which zirconium is added to a magnesium-3wt% zinc-3wt% rare earth alloy and a preparation method thereof. Background technique [0002] Magnesium-zinc-rare earth-zirconium magnesium-based alloy (Mg-Zn-RE-Zr) is composed of magnesium-zinc-rare earth (Mg-Zn-RE) system and magnesium-zinc-zirconium (Mg-Zn-Zr) system. It is a combination of two alloy systems and belongs to the cross system of Mg-Zn-RE and Mg-Zn-Zr systems. Mg-Zn-RE-Zr series magnesium-based alloys have important applications in the field of aerospace materials; 0.59wt%)Zr] magnesium alloy, MB26[Mg-(5.4wt%~5.8wt%)Zn-(1.0wt%~1.65 wt%)MY-(0.48wt%~0.66wt%)Zr] magnesium alloy, MB22 magnesium alloy [Mg-(1.2wt%~1.6wt%)Zn-(2.9wt%~3.5wt%)Y-(0.45wt%) % ~ 0.8wt.%) Zr]. [0003] Obviously, there is a gap between 2wt% and 5wt% of Zn conten...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C23/04C22C1/03B22D21/04C22F1/06
Inventor 王立民孟凡岩吴耀明鞠育平王立东杨洁彭秋明毕广利王小林
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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