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Aluminum magnesium alloy material with wear resistance and corrosion resistance, and preparation method thereof

An aluminum-magnesium alloy and aluminum alloy technology, which is applied in the field of aluminum-magnesium alloy materials and their preparation, can solve the problems of difficulty in meeting the high-quality requirements of modern automobiles, poor hardness and corrosion resistance, and limited thickness of hard oxide films.

Inactive Publication Date: 2011-02-16
蔡乐勤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor hardness and corrosion resistance of the aluminum-magnesium alloy substrate, only a low-temperature hard oxide film is formed on the aluminum-magnesium alloy substrate. The thickness of the hard oxide film is limited, and it is difficult to meet the high-quality requirements of modern cars.

Method used

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Embodiment 1

[0011] An aluminum-magnesium alloy material and a preparation method thereof: firstly, a measured amount of aluminum-magnesium alloy (Al-0.9Mg-0.2Si-0.5Y) is added into a crucible, and heated to 651-659°C to form about 10% volume of solid-phase aluminum Magnesium alloy slurry is injected into a mold preheated to 260°C for forming, and the mold is heated by high frequency during forming (select the quenching temperature 476-482°C according to the aluminum-magnesium alloy material to ensure that the initial hardened layer is formed while forming, and then quickly Cool the formed parts in water to obtain the required parts close to the finished product size; then heat at 530°C for 4.5 hours for fine-grain treatment to obtain the final hardened layer; finally, the hardened layer is treated with arc-suppressed oxidation electrolyzed water An aluminum-magnesium alloy material is formed.

[0012] The solution composition of the arc-suppressed oxidation electrolyzed water: 12.5g / L of ...

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Abstract

The invention relates to the metal manufacturing, in particular to an aluminum magnesium alloy material with wear resistance and corrosion resistance, and a preparation method thereof. The method comprises the following steps: firstly pouring the aluminum alloy slurry with 10% of solid phase by volume into a preheated die for molding to form an initial rigidification layer, wherein the high-frequency heating and quenching temperature is from 452 to 510 DEG C during the molding; then performing the grain refining process on the initial rigidification layer at the temperature of 500 to 530 DEG C for 4 to 4.5 hours to obtain the final rigidification layer; finally carrying out micro arc oxidation electrolysis water treatment on the rigidification layer to obtain the aluminum magnesium alloy material. The aluminum magnesium alloy material has the properties of wear resistance and corrosion resistance, low preparation cost, and convenient and simple operation for preparation, and can be widely used in the manufacture of parts for high-performing cars.

Description

technical field [0001] The invention relates to metal manufacturing industry, in particular to an aluminum-magnesium alloy material and a preparation method thereof. Background technique [0002] The National Planning Commission and the Ministry of Science and Technology jointly issued the "Guidelines for Priority Development of Key Fields of High-tech Industrialization" to determine that the key industries for priority development in the automotive field are mainly concentrated in the auto parts manufacturing industry. The development direction of "miniaturization, light weight and high speed" of the automobile industry provides great opportunities for the development of aluminum-magnesium alloy materials. Since the late 1970s, automobile emission regulations have become increasingly stringent. In order to improve fuel efficiency and reduce emissions, the exhaust temperature of the engine has been continuously increased. In order to improve fuel economy, it is also necessa...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22F1/047C25D11/06
Inventor 蔡乐勤
Owner 蔡乐勤
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