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Amorphous reinforced metal matrix composite material preparing and forming method

A composite material and metal-based technology, which is applied in the field of preparation and forming of amorphous reinforced metal-based composite materials, can solve the problems of poor wettability, easy oxidation of materials, etc., achieve enhanced strength, excellent mechanical properties, and broaden the scope of application Effect

Active Publication Date: 2019-03-08
JIANGSU VILORY ADVANCED MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a preparation and forming method of an amorphous reinforced metal matrix composite material. By selecting amorphous alloy powder and metal powder for low-energy ball milling, the amorphous alloy powder is dispersed in the metal There is no reaction in the powder, so as to realize the non-reactive amorphous phase to strengthen the metal powder matrix. After the mixed powder is subjected to laser selective melting and forming, the strength, hardness, wear resistance and corrosion resistance of the obtained product are improved. SLM Forming amorphous reinforced metal matrix composites to solve the problems of poor wettability, cracks, pores and other problems caused by traditional ceramic reinforcement phases and the problem of easy oxidation of materials in the SLM forming process. SLM is used to control the material and realize online forming. Through the control process content, to prepare amorphous reinforced metal matrix composite parts with excellent mechanical properties and complex shapes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0029] This is to use the present invention to manufacture 316L stainless steel-based composite material conformal cooling channel mold as an example:

[0030] 316L stainless steel has good toughness and high strength, but its hardness is low and its corrosion resistance is poor. Therefore, amorphous alloy powder is used to enhance its mechanical properties and corrosion resistance. Specific steps are as follows:

[0031] (1) Select gas-atomized 316L powder with a particle size of 10-45 μm and gas-atomized amorphous powder Ti with a particle size of 10-45 μm 45.8 Ni 5 Cu 40 sn 2 Si 1 Zr 6.2 (atomic ratio) for mixing, the mass fraction of the amorphous reinforcement phase is 3%, the rotating speed is 100r / min, the ball milling is 60min, and the powder is mixed evenly.

[0032] (2) Save the 3D CAD model of the part as an STL file after being processed by the slicing software, and transmit the data information of the file to the SLM device.

[0033] (3) Fix the substrate o...

example 2

[0039] This is to use the present invention to manufacture AlSi10Mg base composite material turbine disc parts as an example:

[0040] AlSi10Mg alloy has poor mechanical properties such as strength and hardness and is easy to oxidize. Therefore, amorphous alloy powder is used to reduce its oxidation degree and enhance mechanical properties. Specific steps are as follows:

[0041] (1) Select the gas-atomized AlSi10Mg alloy powder with a particle size of 0-45 μm and the gas-atomized amorphous powder Ti with a particle size of 0-45 μm 45 Cu 40 Zr 7.5 Fe 2.5 sn 2 Si 1 sc 2 (atomic ratio) for mixing, the mass fraction of the amorphous reinforcement phase is 10%, the rotating speed is 120r / min, the ball milling is 40min, and the powder is mixed evenly.

[0042] (2) Save the 3D CAD model of the part as an STL file after being processed by the slicing software, and transmit the data information of the file to the SLM device.

[0043] (3) Fix the substrate on the forming table ...

example 3

[0049] This is an example for utilizing the present invention to manufacture the Ti6Al4V base composite material impeller:

[0050] Ti6Al4V alloy has good toughness, but its hardness is low and its corrosion resistance is poor. Therefore, amorphous alloy powder is used to enhance its mechanical properties and corrosion resistance. Specific steps are as follows:

[0051] (1) Select the gas-atomized Ti6Al4V powder with a particle size of 10-45 μm and the gas-atomized amorphous powder Fe with a particle size of 10-45 μm 43.7 co 7.3 Cr 14.7 Mo 12.6 C 15.5 B 4.3 Y 1.9 (atomic ratio) for mixing, the mass fraction of the amorphous reinforcement phase is 20%, the rotating speed is 150r / min, the ball milling is 40min, and the powder is mixed evenly.

[0052] (2) Save the 3D CAD model of the part as an STL file after being processed by the slicing software, and transmit the data information of the file to the SLM device.

[0053] (3) Fix the substrate on the forming table of the...

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Abstract

The invention belongs to the technical field of 3D printing, and discloses an amorphous reinforced metal matrix composite material preparing and forming method. The method comprises the following steps that (a), amorphous alloy powder and metal powder are selected as raw materials, the two kinds of powder are mixed and subjected to low energy ball milling to form mixed powder, wherein the amorphous alloy is dispersed in the metal powder as a wild phase and is used for improving strength, hardness, abrasion resistance and corrosion resistance of a product to be formed, low energy ball milling enables the amorphous alloy powder and the metal powder to be uniformly mixed and prevents the two kinds of powder from plastic deformation; and (b), according to the three-dimensional structure of theproduct to be formed, the obtained mixed powder is used for laser selective melting forming to obtain the product to be formed. The problems of poor wettability, cracking, holes and easy material oxidization of a traditional ceramic reinforcement phase can be solved. The amorphous reinforced metal matrix composite material with the excellent mechanical property and complex shape is obtained.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing 3D printing, and more specifically relates to a preparation and forming method of an amorphous reinforced metal matrix composite material. Background technique [0002] Metal matrix composites are composite materials that use metal or alloy as the matrix and particles, whiskers or fibers as the reinforcing phase. By properly designing the manufacturing process, metal matrix composites can possess the advantages of both metal and reinforcement. Compared with traditional alloy materials, metal matrix composites have the following performance characteristics: high specific strength, high specific modulus, excellent high temperature performance, wear resistance, and good fatigue performance and fracture toughness. [0003] At present, the commonly used reinforcement for forming metal matrix composites is the ceramic phase. Although it can increase the mechanical properties of the metal...

Claims

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Application Information

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IPC IPC(8): B22F9/04B22F1/00B22F3/105B33Y10/00B33Y70/00
CPCB22F1/0003B22F9/04B33Y10/00B33Y70/00B22F2009/043B22F2998/10B22F10/00B22F12/41B22F10/36B22F10/28Y02P10/25
Inventor 宋波章媛洁史玉升
Owner JIANGSU VILORY ADVANCED MATERIALS TECH CO LTD
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