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Method for preparing Al-base composite material

An aluminum-based composite material and aluminum-based alloy technology, which is applied in the field of metal-based composite material preparation, can solve problems such as affecting the performance of composite materials, and achieve the effects of reducing porosity, improving mechanical properties, and improving wetting

Inactive Publication Date: 2007-10-24
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the process of preparing composite materials by traditional stirring casting method, a large number of pores will be formed in the composite material, which seriously affects the performance of the composite material.

Method used

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  • Method for preparing Al-base composite material

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Embodiment Construction

[0031] 1. Example of composite material preparation process

[0032] 1-1 example:

[0033] Select 800g of aluminum alloy as the base, and add 0.15wt% analytically pure CeO at 750°C after the aluminum alloy is completely melted 2 powder while stirring with a mechanical stirring paddle to make analytically pure CeO2 Evenly dispersed in aluminum alloy. Then take carbon fibers with 3% of the total amount of the matrix alloy, electroless nickel-plate the surface for 15 minutes, and make short carbon fibers, the length of which is 2 mm, and add them to the alloy melt treated with the matrix alloy and stir at a stirring temperature of 720 ° C. 5min, the stirring speed is 900r / min, and then the composite material melt is sent into the vacuum furnace for vacuum degassing treatment. The vacuum furnace temperature is 720°C, the vacuum degree is 0.01MPa, and the vacuum degassing time is 1.5min, namely Short carbon fiber reinforced aluminum alloy composites are available.

[0034] 1-2 c...

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Abstract

The invention discloses a making method of aluminium-based composite material, which comprises the following steps: fusing the aluminium based alloy at 750 deg. c; adding the alloy into 0. 15-0. 35wt% CeO2 powder; stirring; alloying; insulating; adding reinforcer during insulating to stir; transmitting the material into vacuum furnace to degas; casting; making the aluminium based material; selecting carbon fiber as the base of reinforcer; metalizing the surface; setting the quantity of reinforcer as 3-5% as carbon fiber.

Description

technical field [0001] The invention relates to the preparation technology of metal-matrix composite materials, in particular to the preparation technology of aluminum-matrix composite materials by using metallized short carbon fibers. Background technique [0002] The preparation methods of known short carbon fiber reinforced aluminum matrix composites are as follows: [0003] Powder metallurgy Powder metallurgy is one of the main methods for preparing and forming discontinuous fiber reinforced metal matrix composites. It uses the principle of powder metallurgy to mix the matrix metal powder and reinforcing materials (whiskers, short fibers, particles, etc.) under appropriate conditions according to the proportion required by the design, and then compact, sinter, form or directly use the mixture Perform hot pressing, hot rolling, hot extrusion forming, or heat the mixture to the solid-liquid phase temperature region of the base metal for semi-solid forming, so as to obtain...

Claims

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Application Information

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IPC IPC(8): C22C47/00C22C47/04C23C18/38C23C18/32C25D3/38C25D3/12C25D5/00C22C1/02
Inventor 姚广春刘宜汉吴林丽罗洪杰罗天骄
Owner NORTHEASTERN UNIV
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