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Preparation method of 3D printed carbon fiber reinforced aluminum matrix composite

A composite material and reinforced aluminum-based technology, which is applied in the direction of additive processing, can solve the problems of uneven distribution and agglomeration of carbon fibers, and achieve excellent performance, material performance improvement, and performance improvement effects

Active Publication Date: 2019-03-15
JILIN UNIV
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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 solve the problems of uneven distribution and agglomeration of carbon fibers in the aluminum matrix in the existing methods, and to improve the performance of CF / Al composite materials by controlling the arrangement of carbon fibers in the aluminum matrix

Method used

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  • Preparation method of 3D printed carbon fiber reinforced aluminum matrix composite
  • Preparation method of 3D printed carbon fiber reinforced aluminum matrix composite
  • Preparation method of 3D printed carbon fiber reinforced aluminum matrix composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] see figure 1 , figure 2 , Figure 4 and Figure 5 Shown:

[0030] The first step is to design the directional arrangement of carbon fibers:

[0031] According to the layout requirements, the thickness of the sample is designed to be 10mm, and the carbon fibers are arranged in parallel between layers (see attached figure 2 ).

[0032] The second step, prepare printing paste:

[0033] Take 2% of carbon fiber, 80% of aluminum powder and 18% of photosensitive resin according to the mass percentage, and stir the three into a uniform slurry by mechanical stirring, the stirring time is 25min, and the stirring speed is 90r / min.

[0034] The third step, 3D printing CF / Al composite material blank:

[0035] According to the carbon fiber arrangement in the first step, divide the whole material into 20 equal layers horizontally, each layer is 0.5mm, and print layer by layer from bottom to top; (3) Drop 0.5mm at a speed of 0.25mm / s. Pour the slurry into the mold groove (2)...

Embodiment 2

[0041] see figure 1 , image 3 , Figure 6 and 7 Shown:

[0042] The first step is to design the directional arrangement of carbon fibers:

[0043] According to the requirements, the thickness of the sample is designed to be 12mm, and the carbon fibers between adjacent layers are arranged vertically to each other (see attached image 3 ).

[0044] The second step, prepare printing paste:

[0045] Take 3% of carbon fiber, 75% of aluminum powder and 22% of photosensitive resin by mass percentage. The three are stirred into a homogeneous slurry by means of mechanical stirring, the stirring time is 40min, and the stirring speed is 150r / min.

[0046] The third step, 3D printing CF / Al composite material blank:

[0047] According to the carbon fiber arrangement in the first step, divide the whole material into 40 layers horizontally, each layer is 0.3mm, and print layer by layer from bottom to top; (3) Drop 0.3mm at a speed of 0.2mm / s. The slurry is poured into the mold groov...

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Abstract

The invention relates to a preparation method of a 3D printed carbon fiber reinforced aluminum matrix composite. The preparation method aims at solving the problems that in a traditional technology, carbon fiber is not uniformly dispersed in an aluminum matrix and are agglomerated; and in addition, the performance of the composite is greatly improved by controlling the arrangement mode of the carbon fiber in the aluminum matrix. The preparation method comprises the following steps that firstly, the arrangement mode of the carbon fiber is designed; secondly, printing paste is prepared; thirdly,a 3D printed carbon fiber / aluminum composite billet is obtained; and fourthly, the billet is subjected to sintering forming. According to the preparation method of the 3D printed carbon fiber reinforced aluminum matrix composite, the carbon fiber is subjected to shearing inducing through a 3D printing technology, precise and exquisite directed arrangement of the carbon fiber in aluminum is achieved, and compared with a confusion state in a traditional preparation technology, the performance of the material can be improved greatly; a unique two-stage sintering technology can also help the performance to be improved; and air pores in the material are decreased, the material is made to become more compact, and the carbon fiber / aluminum matrix composite is made to have the more excellent performance.

Description

technical field [0001] The invention relates to a preparation method of a carbon fiber reinforced aluminum matrix composite material, in particular to a preparation method of a 3D printing carbon fiber reinforced aluminum matrix composite material. Background technique [0002] Due to the excellent properties of carbon fiber reinforced aluminum matrix (CF / Al) composite materials such as low density, wear resistance, fatigue resistance, high specific modulus, high specific strength, and low thermal expansion coefficient, it has become an important material for aerospace, military equipment, automobiles, etc. Ideal structural material in the field. At present, the main methods of preparing CF / Al composite materials at home and abroad are: powder metallurgy, squeeze casting, vacuum pressure infiltration and so on. Among them, although the powder metallurgy method makes the internal structure of the composite material evenly distributed, there are problems such as uneven distri...

Claims

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Application Information

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IPC IPC(8): C22C47/14C22C49/06C22C49/14B22F3/22B22F3/10B33Y10/00B33Y70/00C22C101/10
CPCB22F3/1021B22F3/22B33Y10/00B33Y70/00C22C47/14C22C49/06C22C49/14
Inventor 梁云虹吴晗任雷林兆华刘庆萍
Owner JILIN UNIV
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