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A kind of magnesium alloy and its preparation method and application

A technology of magnesium alloy and high content, which is applied in the field of alloys and can solve problems such as poor mechanical properties

Active Publication Date: 2020-10-23
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem of poor mechanical properties in the prior art, to provide a magnesium alloy and its preparation method and application, the magnesium alloy has better mechanical properties

Method used

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  • A kind of magnesium alloy and its preparation method and application
  • A kind of magnesium alloy and its preparation method and application
  • A kind of magnesium alloy and its preparation method and application

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0038] Alloy raw materials were prepared according to the composition of the magnesium alloy shown in Table 1 (based on the total amount of the magnesium alloy, in weight percentage, and the balance being Mg). Put the prepared alloy raw material in a melting furnace for melting, feed 99.99% high-purity argon gas into the melting process, and smelt at a temperature of 720° C. for 30 minutes. The obtained melt is poured into a metal mold, and after cooling, a magnesium alloy casting is obtained.

[0039] The prepared magnesium alloy casting was subjected to aging treatment at 200° C. for 5 hours. After the aging treatment is completed, it is naturally cooled to room temperature.

Embodiment 2-3

[0041] The magnesium alloy was prepared by the same method as in Example 1, except that the alloy raw materials were prepared according to the composition of the magnesium alloy given in Table 1. Wherein, the magnesium alloy casting prepared in Example 2 was subjected to aging treatment at 120° C. for 36 hours, and the magnesium alloy casting prepared in Example 3 was subjected to aging treatment at 350° C. for 6 hours.

Embodiment 4

[0043]The magnesium alloy was prepared by the same method as in Example 1, except that the contents of Ce and Nd were 0.25% and 0.3% respectively.

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Abstract

The invention relates to the field of alloys and discloses a magnesium alloy and a preparation method and an application of the magnesium alloy. The magnesium alloy comprises 9-12% of Al, 0.2-0.6% ofMn, 0.3-0.7% of Zn, 0.05-2% of Ce, 0.05-0.5% of Nd, 0-0.1% of Cu, 0-0.1% of Sr, 0-0.01% of Ca and proper amount of Mg. The invention further discloses a preparation method of the magnesium alloy. Thepreparation method comprises smelting a magnesium alloy material, casting a smelted alloy solution, cooling to obtain the magnesium alloy, wherein the obtained magnesium alloy is the magnesium alloy due to the composition of the magnesium alloy material. The invention further discloses an application of the magnesium alloy in the preparation of auto parts. The comprehensive mechanical property ofthe prepared magnesium alloy is high (the strength and the toughness are particularly high), and the flow moulding property is good.

Description

technical field [0001] The invention relates to the field of alloys, in particular to a magnesium alloy and its preparation method and application. Background technique [0002] Die casting is one of the basic forming methods of magnesium alloys, which can be used for product design of complex structural parts. The commonly used material for magnesium alloy die-casting is AZ91D, which has good flow forming performance, large forming process window, and high cost performance. It has been widely used in magnesium alloy die-casting products. [0003] The main component elements of the AZ91D material are 8.5-9.5% by weight of aluminum, 0.45-0.9% by weight of zinc, 0.17-0.4% by weight of manganese, ≤0.05% by weight of silicon, ≤0.025% by weight of copper, ≤0.001% by weight of nickel, and ≤0.004% by weight of iron. AZ91D material features high specific strength, and its corrosion resistance is greatly improved compared with pure magnesium. It is mainly used for shells of electri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/02C22C1/02
CPCC22C1/02C22C23/02
Inventor 郭强曹梦梦巩泉雨
Owner BYD CO LTD
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