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A high-performance magnesium alloy

A magnesium alloy, high-performance technology, applied in metal material coating process, solid-state diffusion coating, coating, etc., can solve the problem of magnesium alloy room temperature formability and corrosion resistance, which is limited by the poor high temperature creep performance. Wide application, complex surface treatment process and other problems, to achieve good high temperature creep resistance, small grain size and good corrosion resistance

Active Publication Date: 2020-11-03
贵州航天风华精密设备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, different elements have different effects on the corrosion performance and microstructure of magnesium alloys. The surface treatment process is complex and costly; There are few studies; in addition, the poor high-temperature creep of magnesium alloys limits the wide application of magnesium alloys in the aviation field. Although the addition of rare earth elements can improve the high-temperature creep of magnesium alloys, it also increases the cost. Therefore, looking for a Low-cost, high-performance magnesium alloy manufacturing process has become a new development path

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  • A high-performance magnesium alloy
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Embodiment 1

[0029] This embodiment provides a high-performance magnesium alloy. According to weight percentage, the composition of the alloy is: Bi 0.36%, Ca 0.83%, Si 8.23%, Sn 1.95%, Zn 0.3%, Na 0.09%, K 0.12%, Ni 0.44%, Cu 0.18%, Ti 1.4%, B 0.36%, and the balance is magnesium.

[0030] The preparation method of the high-performance magnesium alloy is:

[0031] 1) Melting: Under the condition of protective gas, after the industrial pure magnesium is completely melted, a refining agent with a mass of 200ppm of pure magnesium is added, and Bi, Ca, Sn, B. Cu and Ti elements are completely dissolved. After the heat preservation reaction for 10 minutes, Si and Na elements are added in the form of silicon dioxide and sodium chloride until they are completely dissolved. The heat preservation reaction is 10 minutes, and then added in the form of Bi-Zn-K-Ni master alloy. Bi, Zn, K, and Ni are all dissolved, and the heat preservation reaction is carried out for 10 minutes to obtain a melt; the t...

Embodiment 2

[0043] This embodiment provides a high-performance magnesium alloy. According to weight percentage, the composition of the alloy is: Bi 0.28%, Ca 0.51%, Si 5.05%, Sn 1.62%, Zn 0.1%, Na 0.05%, K 0.07%, Ni 0.26%, Cu 0.06%, Ti 1.2%, B 0.24%, and the balance is magnesium.

[0044] The preparation method of the high-performance magnesium alloy is:

[0045] 1) Melting: Under the condition of protective gas, after the industrial pure magnesium is completely melted, a refining agent with a mass of 150ppm of pure magnesium is added, and Bi, Ca, Sn, B. Cu and Ti elements are completely dissolved. After the heat preservation reaction for 8 minutes, Si and Na elements are added in the form of silicon dioxide and sodium chloride until they are completely dissolved. The heat preservation reaction is 8 minutes, and then added in the form of Bi-Zn-K-Ni master alloy. Bi, Zn, K, and Ni are all dissolved, and the heat preservation reaction is carried out for 8 minutes to obtain a melt; the temp...

Embodiment 3

[0057] This embodiment provides a high-performance magnesium alloy. According to weight percentage, the composition of the alloy is: Bi 0.32%, Ca 0.75%, Si 7.01%, Sn 1.77%, Zn 0.23%, Na 0.07%, K 0.1%, Ni 0.3%, Cu 0.12%, Ti 1.3%, B 0.28%, and the balance is magnesium.

[0058] The preparation method of the high-performance magnesium alloy is:

[0059] 1) Melting: Under the condition of protective gas, after the industrial pure magnesium is completely melted, a refining agent with a mass of 180ppm of pure magnesium is added, and Bi, Ca, Sn, B. Cu and Ti elements are completely dissolved. After the heat preservation reaction for 9 minutes, Si and Na elements are added in the form of silicon dioxide and sodium chloride until they are completely dissolved. The heat preservation reaction is 9 minutes, and then added in the form of Bi-Zn-K-Ni master alloy. Bi, Zn, K, and Ni are all dissolved, and the heat preservation reaction is carried out for 9 minutes to obtain a melt; the tempe...

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Abstract

The invention relates to the technical field of magnesium alloy preparation, in particular to a high-performance magnesium alloy. The high-performance magnesium alloy comprises, by weight, 0.28%-0.36%of Bi, 0.51%-0.83% of Ca, 5.05%-8.23% of Si, 1.62%-1.95% of Sn, 0.1%-0.3% of Zn, 0.05%-0.09% of Na, 0.07%-0.12% of K, 0.26%-0.44% of Ni, 0.06%-0.18% of Cu, 1.2%-1.4% of Ti, 0.24%-0.36% of B and the balance magnesium. The invention further discloses a preparation method of the high-performance magnesium alloy. The magnesium alloy has the good corrosion resistance and high-temperature creep resistance, the defect that the ignition point is low is overcome, and the mechanical property of the magnesium alloy is improved.

Description

technical field [0001] The invention relates to the technical field of magnesium alloy preparation, in particular to a high-performance magnesium alloy. Background technique [0002] The selection of suitable metal materials has an important impact on the manufacture of spacecraft. When selecting metal materials, the characteristics, economic cost and use value of metal materials should be considered comprehensively. Magnesium alloys have the characteristics of light weight, high specific stiffness, and high specific strength, which make magnesium alloys have better shock resistance and shock absorption capabilities. However, magnesium alloys are easily corroded, and the impurities contained in them aggravate their corroded characteristics. [0003] For example, Patent No. CN201711011430.3 discloses a bio-magnesium alloy with corrosion resistance, which consists of a bio-magnesium alloy matrix and graphene oxide distributed on the grain boundaries of the bio-magnesium alloy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/00C22C1/03C22C1/06C23C8/52C09D105/00C09D105/04C09D105/08C09D7/61C09D7/63C09D5/08
CPCC08L2205/03C09D5/08C09D7/61C09D7/63C09D105/00C22C1/03C22C1/06C22C23/00C23C8/52C08L5/04C08L5/08C08K3/34C08K5/098
Inventor 陈寅于丹
Owner 贵州航天风华精密设备有限公司
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