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Method for preparing multi-scale ceramic phase reinforced metal composite material by 3D printing

A metal composite material, 3D printing technology, applied in the direction of additive processing, metal processing equipment, transportation and packaging, etc., can solve the problems of difficult uniform dispersion of ceramic particles, difficult control of ceramic phase scale, poor bonding of matrix interface, etc., to achieve ceramic Uniform phase distribution, high sphericity, and the effect of solving agglomeration

Active Publication Date: 2020-11-20
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems in multi-scale ceramic phase-reinforced metal composite materials, the control of the ceramic phase scale is difficult, the ceramic particles are difficult to disperse evenly, and the bonding with the matrix interface is poor, the present invention is a method for preparing multi-scale ceramic phase-reinforced metal composite materials by 3D printing. Micron-sized ceramic particles are used as raw materials to prepare multi-scale ceramic-metal spherical composite powders, and a method for preparing multi-scale ceramic phase-reinforced metal composites by 3D printing
In the process of 3D printing, Marangoni convection is used to stir the melt, which promotes the rearrangement of ceramic particles in the melt, realizes the uniform distribution of multi-scale ceramic phases in the melt, and rapidly solidifies to obtain a solidified structure with uniform distribution of multi-scale ceramic phases. ;Through high-temperature melting and rapid solidification of laser or electron beams, the problem of interface defects caused by poor wettability between the ceramic reinforcement phase and the metal matrix is ​​solved; the prepared metal composite materials have uniform distribution of ceramic phases and different scales, which can realize The multi-scale ceramic particle scale ranges from nanometer to submicron and between micrometers, with excellent mechanical properties; micron-sized ceramic particles are used, and the cost is low; parts of any complex shape can be integrally formed to improve material utilization.

Method used

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  • Method for preparing multi-scale ceramic phase reinforced metal composite material by 3D printing
  • Method for preparing multi-scale ceramic phase reinforced metal composite material by 3D printing
  • Method for preparing multi-scale ceramic phase reinforced metal composite material by 3D printing

Examples

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Effect test

Embodiment 1

[0044] A method for preparing multi-scale ceramic phase-reinforced metal composites by 3D printing, using René 104 nickel-based superalloy as the matrix, using TiC ceramic particles with an average particle size of 2.5 μm as the reinforcing phase, and adding 3.0% by mass.

[0045] The matrix material is René104 nickel-based superalloy spherical powder with a particle size of 15-53 μm. The composition of René104 nickel-based superalloy is: 20.6Co~13Cr~3.4Al~3.9Ti~3.8Mo~2.1W~2.4Ta~0.9Nb ~0.05Zr~0.03B~0.04C~the balance is Ni.

[0046] The method for preparing a multi-scale ceramic phase reinforced metal composite material by 3D printing, the steps are as follows:

[0047] (1) Add TiC ceramic particles in two times, mix with a certain proportion of René104 nickel-based superalloy powder (ratio: 2:3), and carry out wet grinding treatment every time TiC ceramic particles are added, and the mass fraction added each time is equal to 1.5%; and then perform dry grinding treatment to ob...

Embodiment 2

[0061] The difference from Example 1 is that the step (1) adds TiC ceramic particles twice, the mass fraction of the first addition is 1.0%, and the mass fraction of the second addition is 2.0%.

[0062] Others remain unchanged.

[0063] After testing, the microhardness of the prepared multi-scale TiC / René104 composite is 598HV 0.2 , the tensile strength is 1823MPa, the friction and wear performance test shows that the friction coefficient is 0.41, and the wear amount in 30min is 5.2×10 -4 (mm3 / Nm).

Embodiment 3

[0065] The difference from Example 1 is that in the step (1), TiC ceramic particles are added three times, wet grinding is performed three times and dry grinding is performed once, and the mass fraction added each time is 1.0%.

[0066] Others remain unchanged.

[0067] After testing, the microhardness of the prepared multi-scale TiC / René104 composite material is 615HV0.2, the tensile strength is 1863MPa, the friction and wear performance test shows that the friction coefficient is 0.32, and the wear amount in 30min is 4.3×10 -4 (mm3 / Nm).

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Abstract

The invention provides a method for preparing a multi-scale ceramic phase reinforced metal composite material by 3D printing, which takes a metal material as a base body and takes ceramic particles asa reinforcement phase. The method comprises the following steps: adopting one or more ceramic particles of micro TiC, TiB2, WC, SiC, CrC and Al2O3 as raw materials, adding the ceramic particles and certain proportion of metal powder in batches, wherein mass percentage of the added ceramic particles is 0-10.0%; and performing a special ball-milling process, plasma spheroidizing, gas-flow grading and screening to obtain multi-scale uniform-ceramic-phase metal composite powder which is good in spheroidizing degree, is good in mobility and is narrow in particle size range, thereby obtaining multi-scale ceramic phase reinforced the metal composite material prepared by 3D printing. The prepared metal composite material is uniform in ceramic phase distribution, has different scales, and is excellent in mechanical property. Micro-scale ceramic particles are adopted, so that cost is low; and parts with any complex shapes can be prepared through integral forming, so that a material utilizationrate is increased.

Description

technical field [0001] The invention provides a method for preparing multi-scale ceramic phase-reinforced metal composite materials by 3D printing, which belongs to the technical field of metal composite materials and additive manufacturing. Background technique [0002] Ceramic particle reinforced metal composites have the advantages of high specific strength, specific modulus, high temperature resistance, small thermal expansion coefficient, wear resistance, corrosion resistance, and good dimensional stability, but their plasticity and toughness are poor. Composites will fail prematurely under operating conditions. This has become a bottleneck in the development of metal matrix composites, which greatly limits the application of metal matrix composites. Nano-ceramics reinforced metal composites can maintain good toughness while improving mechanical properties such as strength and hardness. However, the anti-wear and impact resistance of nano-ceramic phase-reinforced meta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B22F1/00B33Y10/00B33Y70/10
CPCB33Y10/00B33Y70/10B22F1/14Y02P10/25
Inventor 刘祖铭魏冰农必重吕学谦任亚科曹镔艾永康
Owner CENT SOUTH UNIV
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