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Preparation method of three-dimensional double-connected structure composite material based on additive manufacturing

A composite material and additive manufacturing technology, applied in the direction of additive manufacturing, manufacturing tools, additive processing, etc., can solve the problems of foam permeability and strength limitation, no reliability, no 3D distribution of reinforcement, etc.

Pending Publication Date: 2022-03-18
SHENYANG AEROSPACE UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Taking nickel metal foam and silicon carbide ceramic foam as examples, they are composed of cells and struts, forming a three-dimensional network structure macroscopically, but the size, shape and distribution of the cell body and the thickness and length of the struts are random. In addition to the influence of the shape and size of the porogen particles, it is also affected by the sintering temperature, which will lead to the limitation of the permeability and strength of the foam during subsequent processing, and is not reliable
At present, there is no technology that can directly design the 3D distribution of reinforcements to achieve three-dimensional structure reinforced / toughened composites

Method used

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  • Preparation method of three-dimensional double-connected structure composite material based on additive manufacturing
  • Preparation method of three-dimensional double-connected structure composite material based on additive manufacturing
  • Preparation method of three-dimensional double-connected structure composite material based on additive manufacturing

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Embodiment 1

[0076] (1) Determine the shape of the part as the shaft, the matrix powder is aluminum alloy powder, and the reinforcing phase powder is TC4 titanium alloy. The strength performance requirement is 600MPa, the strength of aluminum alloy is 400MPa, and the strength of TC4 titanium alloy is 900Mpa. According to 400×a%+900×b%=600, a%+b%=100%, a=0.6, b=0.4 ; According to the shape of the part shaft, the "reinforced phase" space form (the shape of the reinforced phase) of the part is obtained as a skeleton to obtain a group of cylinders that are equal in length to the axis and parallel to the center line of the shaft, and the volume ratio (the totality of the reinforced phase and the part volume ratio) is 40%, the diameter of the rod (the size of the cross-section of the reinforced phase rod) is 0.8 mm, and the cross-sectional shape of the rod is circular.

[0077] (2) Selected area laser melting technology performs layered processing on the three-dimensional model of the "enhanced ...

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Abstract

The invention relates to the technical field of composite material preparation, in particular to a preparation method of a three-dimensional double-connected structure composite material based on additive manufacturing. The three-dimensional double-connected structure composite material comprises a reinforced phase network skeleton and a matrix filling skeleton, wherein the reinforced phase network skeleton is constructed by reinforced phase rods; the method comprises the following steps: firstly, designing a reinforced phase spatial form, a volume ratio, a reinforced phase rod diameter and a reinforced phase rod cross section shape, and constructing a reinforced phase network skeleton and a matrix filling skeleton; then preparing a reinforced phase network skeleton by using a selective laser melting method, then filling matrix powder, compacting and sintering to obtain the three-dimensional double-connected structure composite material, according to the composite material preparation method based on additive manufacturing, high designability and customization of a 3D reinforced framework are achieved, and a compact defect-free three-dimensional double-communication structure composite material is prepared in combination with a subsequent sintering process.

Description

technical field [0001] The invention relates to the technical field of composite material preparation, and specifically designs a method for preparing a three-dimensional double-connected structure composite material based on additive manufacturing. Background technique [0002] Additive Manufacturing (AM) technology is based on the discrete-accumulation principle, using layered slicing software to slice, scan and fill the model of the part to be formed, and the powder or wire is controlled by the numerical control system to melt, solidify and Accumulate layer by layer, and finally complete the rapid prototyping of parts. Forming materials based on laser technology include metals, non-metals, composite materials, biological materials and even life materials, and laser and powder-based additive manufacturing technologies have formed two typical forming processes, laser deposition technology (Laser Deposition Manufacturing, LMD) Synchronous powder-feeding laser deposition man...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F10/28B22F5/10B22F7/06B28B1/00B33Y10/00B33Y80/00
CPCB22F10/28B22F5/10B22F7/06B28B1/001B33Y10/00B33Y80/00Y02P10/25
Inventor 杨光赵朔钦兰云周思雨王伟李播博任宇航王超
Owner SHENYANG AEROSPACE UNIVERSITY
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