A near-net-shape method for 3D braided fiber-reinforced metal matrix composites

A technology of weaving fibers and composite materials, applied in the field of near-net shape, which can solve the problems affecting the shape structure, dimensional accuracy and mechanical properties of composite materials, the local structural shape is easily deformed, and it is difficult to ensure the shape and size, etc., to achieve excellent mechanical properties , Reduce the effect of poor dimensional accuracy and high dimensional accuracy
CN109468549BInactive Publication Date: 2020-09-25NANCHANG HANGKONG UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANCHANG HANGKONG UNIVERSITY
Publication Date
2020-09-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a near-net forming method of the 3D braided fiber reinforced metal-based composite material, and belongs to the technical field of advanced composite materials. The method is characterized in that a vacuum air pressure infiltration preparation technology based on a liquid binder is adopted to assist in accurately controlling the shape and the size of a 3D braided fiber preform structure; in the 3D weaving process of the fiber preform, a liquid binder is adopted to accurately fix and shape the 3D braided fiber preform, then the size precision of the 3D braided fiber reinforced metal-based composite material is accurately controlled through the impregnated graphite mold of the embedded fiber preform, and deformation and local fiber polarization of the 3D braided fiberpreform in the infiltration process are prevented. The prepared 3D braided fiber reinforced metal-based composite material has high dimensional accuracy and excellent mechanical properties, the near-net forming of the 3D braided fiber reinforced metal-based composite material is realized, batch industrial production can be realized, the near-net forming method has a wide application prospect in the fields of aerospace, national defense, military and the like.
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Description

technical field

[0001] The invention relates to the field of high-performance metal-matrix composite materials with complex structures, in particular to a near-net-shaping method for 3D braided fiber-reinforced metal-matrix composite materials. Background technique

[0002] Three-dimensional (3D) braided fiber-reinforced metal matrix composites have the advantages of high specific stiffness and specific strength, corrosion resistance, excellent temperature resistance, impact resistance and damage resistance, while the 3D braided structure avoids the traditional unidirectional composite The anisotropy of materials and the problems of easy cracking and delamination of two-dimensional composite materials, low interlaminar shear strength, and poor impact resistance are one of the structural materials with the most development potential in cutting-edge engineering and technology fields such as aviation, aerospace, and national defense.

[0003] At present, the preparation methods...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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