Special magnesium alloy for magnesium alloy wheel hub and preparation technology of special magnesium alloy

A preparation process and technology of magnesium alloys, applied in the field of alloys, can solve the problems of restricting the large-scale application of magnesium alloy parts, poor heat resistance, creep resistance and high temperature service performance, insufficient strength, etc., to improve strength, improve performance, and reduce impurities. Effect

Inactive Publication Date: 2018-01-19
仝仲盛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its insufficient strength, poor heat resistance, creep resistance and high temperature service performance, the large-scale application of magnesium alloy parts in the aerospace and automotive industries is restricted.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0038] The preparation process of the invention is simple and has industrial application value, so that the high-strength deformed rare earth magnesium alloy can be directly produced under the existing industrial conditions. It can be deformed and processed on ordinary industrial extrusion, rolling, forging and other deformation processing equipment, and has the advantages of simple process, convenient operation and low cost.

[0039] In a preferred embodiment, in the preparation process of the special magnesium alloy used for the magnesium alloy hub, in the first step, the magnesium ingot is melted in an iron container, and the melting process is protected by a mixed gas. The mixed gas can protect the magnesium melt from oxidation.

[0040] In a preferred embodiment, in the preparation process of the special magnesium alloy used for the magnesium alloy wheel hub, in the second step, the alloying process adopts automatic stirring of the alloy melt, thereby promoting the unifor...

Embodiment 1

[0044] Step 1. Selecting raw materials: using the following components by mass percentage to prepare a magnesium alloy: 1.21% zinc; 8.2% aluminum; 0.62% cerium; 0.34% yttrium; the rest is magnesium;

[0045] Step 2. Melting: Put the magnesium ingot in an iron container to melt, and the melting process is protected by mixed gas;

[0046] Step 3, alloying: heat up to 660°C and add aluminum, zinc and yttrium, heat up to 740°C and add cerium, and automatically stir the alloy melt;

[0047] Step 4. Refining: PFD anaerobic refining at 735°C;

[0048] Step 4. Casting: cooling down to 695°C, using medium frequency electromagnetic casting;

[0049] Step 5, solution aging treatment: solution treatment at 420° C. for 2 hours, and then aging treatment at 180° C. for 16 hours.

Embodiment 2

[0051] Step 1. Select raw materials: prepare a magnesium alloy by using the following components by mass percentage: 0.8% zinc; 7.8% aluminum; 0.5% cerium; 0.2% yttrium; the rest is magnesium;

[0052] Step 2. Melting: Put the magnesium ingot in an iron container to melt, and the melting process is protected by mixed gas;

[0053] Step 3, alloying: heat up to 660°C and add aluminum, zinc and yttrium, heat up to 740°C and add cerium, and automatically stir the alloy melt;

[0054] Step 4. Refining: PFD anaerobic refining at 740°C;

[0055] Step 5. Casting: cooling down to 705°C, using intermediate frequency electromagnetic casting;

[0056]Step 6, solution aging treatment: solution treatment at 420° C. for 2 hours, and then aging treatment at 180° C. for 16 hours.

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Abstract

The invention discloses a special magnesium alloy for a magnesium alloy wheel hub. The special magnesium alloy is composed of the following components of, by mass, 0.8-1.53% of zinc, 7.8-8.5% of aluminum, 0.5-1.25% of cerium, 0.2-0.53% of yttrium, less than or equal to 0.10% of unavoidable impurities and the balance magnesium. The invention further discloses a preparation technology of the specialmagnesium alloy for the magnesium alloy wheel hub. The preparation technology prepares the magnesium alloy by adopting the following components of, by mass, 0.8-1.53% of the zinc, 7.8-8.5% of the aluminum, 0.5-1.25% of the cerium, 0.2-0.53% of the yttrium and the balance magnesium. According to the special magnesium alloy, light and heavy rare earth components are added, a melt is purified, the impurities are reduced, the second phase in the alloy is changed, so that the strength, the toughness and the anti-corrosion performance of the alloy are greatly improved, and the cracking tendency ofthe magnesium alloy wheel hub in the hot working process is reduced.

Description

technical field [0001] The invention relates to alloy technology, in particular to a special magnesium alloy used for a magnesium alloy wheel hub and a preparation process thereof. Background technique [0002] Magnesium is known as a green engineering material in the 21st century due to its advantages of light weight, energy saving, and recyclability. However, due to its insufficient strength, poor heat resistance, creep resistance and high temperature service performance, the large-scale application of magnesium alloy components in the aerospace and automotive industries is restricted. Research and development of high-performance magnesium alloys with independent intellectual property rights is important for expanding the application of magnesium alloys, improving the technical content and grade of China's auto industry products, improving the technical level of China's magnesium smelting industry, and independently mastering the core technology of advanced magnesium alloy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02C22C1/02C22F1/06
Inventor 仝仲盛
Owner 仝仲盛
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