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Vacuum air-pressure infiltration forming method of fiber reinforced aluminum base composite material

An aluminum-based composite material and fiber-reinforced technology, applied in vacuum evaporation plating, metal material coating process, ion implantation plating, etc., can solve problems such as infiltration micropores and loose fiber damage, and achieve wide application prospects. The effect of microporosity and porosity defect elimination

Active Publication Date: 2019-09-13
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the fiber-reinforced metal matrix composites prepared by the vacuum pressure infiltration method are prone to defects such as impregnation pores, porosity and fiber damage.

Method used

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  • Vacuum air-pressure infiltration forming method of fiber reinforced aluminum base composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A vacuum pressure infiltration forming method of M40J fiber reinforced aluminum matrix composite material, the preparation steps are as follows:

[0028] A. First weave the M40J fiber prefabricated body with three-dimensional orthogonal structure;

[0029] B. Carry out vacuum evaporation coating of magnesium element on the woven three-dimensional orthogonal structure M40J fiber prefabricated body, and the thickness of the coating film is 3 μm;

[0030] C. The impregnated graphite mold is made of high-purity graphite material. After machining and forming, it is baked at 500 ° C for 30 minutes, and cleaned with acetone after cooling to room temperature;

[0031] D. Embed and fix the fiber preform in the impregnated graphite mold, and weld and package the impregnated graphite mold embedded with the three-dimensional orthogonal M40J fiber preform with stainless steel plates and stainless steel pipes. There is an opening at the top of the tube, and the impregnated graphite ...

Embodiment 2

[0038] A vacuum pressure infiltration forming method of 2.5D braided C fiber reinforced aluminum matrix composite material, the preparation steps are as follows:

[0039] A. First weave the C fiber prefabricated body with 2.5D structure;

[0040] B. Plasma coating of titanium element is performed on the woven 2.5D structure C fiber prefabricated body, and the coating thickness is 0.5 μm;

[0041] C. The impregnated graphite mold is made of high-purity graphite material. After machining and forming, it is baked at 400°C for 30 minutes, and cleaned with ethanol after cooling to room temperature;

[0042]D. Embed and fix the fiber prefabricated body in the impregnated graphite mold, and use stainless steel plates and stainless steel pipes to weld and package the impregnated graphite mold embedded with the C fiber prefabricated body with a 2.5D structure. There is an opening at the top of the tube, and the impregnated graphite mold is welded and packaged for air tightness testing...

Embodiment 3

[0049] A vacuum pressure infiltration forming method of a three-dimensional five-directional SiC fiber reinforced aluminum matrix composite material, the preparation steps are as follows:

[0050] A. First weave the SiC fiber prefabricated body with three-dimensional five-directional structure;

[0051] B. Carry out vacuum evaporation coating of magnesium element on the woven SiC fiber prefabricated body with three-dimensional five-directional structure, and the thickness of the coating film is 1.5 μm;

[0052] C. The impregnated graphite mold is made of high-purity graphite material. After machining and forming, it is baked at 500°C for 50 minutes, and cleaned with acetone after cooling to room temperature;

[0053] D. Embed and fix the fiber prefabricated body in the impregnated graphite mold, and use stainless steel plates and stainless steel pipes to weld and package the impregnated graphite mold embedded with the three-dimensional five-directional SiC fiber prefabricated ...

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Abstract

The invention discloses a vacuum air-pressure infiltration forming method of a fiber reinforced aluminum base composite material, and belongs to the technical field of advanced composite materials; and the method is to deposit thin-layer metal elements on the surfaces of woven fiber prefabricated bodies in a physical vapor deposition mode and to finally perform hot isostatic pressing on the fiberreinforced aluminum base composite material to realize vacuum air-pressure complete infiltration of the fiber reinforced aluminum base composite material. The difficulty of incapability of realizing complete infiltration in the vacuum air-pressure infiltration forming process of the fiber prefabricated bodies is solved under the condition of the preheating temperature of the fiber prefabricated bodies lower than 450 DEG C; such defects as micro holes and looseness in the composite material are eliminated; the infiltration formation of the high-performance fiber reinforced aluminum base composite material is realized; the industrial batch production can be realized; and the broad application prospect is achieved in such fields as aerospace and national defense and military.

Description

technical field [0001] The invention relates to the field of advanced metal-matrix composite materials, in particular to a vacuum pressure infiltration forming method of fiber-reinforced aluminum-matrix composite materials. Background technique [0002] Fiber-reinforced aluminum matrix composites have the advantages of high specific stiffness and specific strength, corrosion resistance, excellent temperature resistance, impact resistance and damage resistance, and are the most promising in cutting-edge engineering technology fields such as aviation, aerospace and national defense. One of the structural materials. However, how to prepare high-performance fiber-reinforced aluminum matrix composites is a key technology for theoretical research and engineering applications of such composite materials. [0003] Among them, the vacuum pressure infiltration method is one of the ideal methods for preparing fiber-reinforced aluminum matrix composites. Vacuum air pressure infiltrati...

Claims

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Application Information

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IPC IPC(8): C22C47/06C22C47/08C22C49/06C22C49/14C23C14/18C23C14/24C23C14/34C22C101/10C22C101/04C22C101/14
CPCC22C47/066C22C47/08C22C49/06C22C49/14C23C14/18C23C14/185C23C14/24C23C14/34
Inventor 徐志锋梁祥余欢王振军蔡长春张守银汪志太
Owner NANCHANG HANGKONG UNIVERSITY
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