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A kind of high entropy alloy particle reinforced aluminum matrix composite material and magnetic field assisted preparation method

A particle-reinforced aluminum and high-entropy alloy technology, applied in the field of composite material preparation, can solve the problems that composite materials are difficult to obtain expected properties, difficult to disperse, and difficult to disperse particles

Active Publication Date: 2021-11-23
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, particles with smaller particle sizes are difficult to disperse, and nano-sized particles are very easy to agglomerate. When the particle content exceeds a certain amount, it is also difficult to disperse, which will make it difficult for the composite material to obtain the expected performance.

Method used

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  • A kind of high entropy alloy particle reinforced aluminum matrix composite material and magnetic field assisted preparation method
  • A kind of high entropy alloy particle reinforced aluminum matrix composite material and magnetic field assisted preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Prepared with FeCoCrCuNi 1.5 Gd 0.8 A high-entropy alloy particle-reinforced aluminum matrix composite material with high-entropy alloy particles as a composite phase.

[0029] (1) Steps for preparing high-entropy alloy powder: FeCoCrCuNi is selected as the reinforcing base 1.5 Gd 0.8 For high-entropy alloys, according to the ratio of atomic number 1:1:1:1:1.5:0.8, calculate and weigh the corresponding mass of metal powder, put the mixed powder in the ball mill tank, vacuumize and pass in argon gas , followed by mechanical alloying by high energy ball milling. The parameters of ball milling are as follows: mass ratio of ball to material is 12:1, dry milling for 30 hours at a speed of 150r / min, then adding absolute ethanol as a process control agent, wet milling for 12 hours at a speed of 250r / min. Dry for 45h to obtain high entropy alloy powder.

[0030] (2) The step of preparing composite powder: mixing the high-entropy alloy powder particles and pure aluminum pow...

Embodiment 2

[0035] Prepared with FeCoCrCuNi 1.5 Gd 0.8 A high-entropy alloy particle-reinforced aluminum matrix composite material with high-entropy alloy particles as a composite phase.

[0036] (1) Steps for preparing high-entropy alloy powder: FeCoCrCuNi is selected as the reinforcing base 1.5 Gd 0.8 For high-entropy alloys, according to the ratio of atomic number 1:1:1:1:1.5:0.8, calculate and weigh the corresponding mass of metal powder, put the mixed powder in the ball mill tank, vacuumize and pass in argon gas , followed by mechanical alloying by high energy ball milling. The parameters of ball milling are as follows: mass ratio of ball to material is 12:1, dry milling for 30 hours at a speed of 150r / min, then adding absolute ethanol as a process control agent, wet milling for 12 hours at a speed of 250r / min. Dry for 45h to obtain high entropy alloy powder.

[0037] (2) The step of preparing composite powder: mixing the high-entropy alloy powder particles and pure aluminum pow...

Embodiment 3

[0042] Prepared with FeCoCrCuNi 1.5 High-entropy alloy particle-reinforced aluminum-matrix composite material with Yb high-entropy alloy particles as composite phase.

[0043] (1) Steps for preparing high-entropy alloy powder: FeCoCrCuNi is selected as the reinforcing base 1.5 Yb high-entropy alloy, according to the ratio of atomic number 1:1:1:1:1.5:1, calculate and weigh the corresponding mass of metal powder, put the mixed powder in the ball mill tank, vacuumize and pass in argon gas, and then mechanically alloyed by high-energy ball milling. The parameters of ball milling are as follows: mass ratio of ball to material is 12:1, dry milling for 30 hours at a speed of 150r / min, then adding absolute ethanol as a process control agent, wet milling for 12 hours at a speed of 250r / min. Dry for 45h to obtain high entropy alloy powder.

[0044] (2) The step of preparing composite powder: mixing the high-entropy alloy powder particles and pure aluminum powder with a mass fraction...

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Abstract

The invention provides a high-entropy alloy particle-reinforced aluminum-based composite material and a magnetic field-assisted preparation method. The composite material uses pure aluminum or aluminum alloy as a matrix and adds FeCoCrCuNi m R n The high-entropy alloy is used as a composite phase to achieve performance enhancement and endow the material with microwave absorption and weldability. FeCoCrCuNi in the composite material m R n The mass fraction of the high-entropy alloy composite phase is 5-20%. The preparation method of the composite material of the present invention adopts the following main preparation steps: (1) preparation of high-entropy alloy powder; (2) preparation of composite powder of high-entropy alloy and pure aluminum or aluminum alloy; (3) cold isostatic pressing; ( 4) Magnetic field assisted microwave sintering and curing. Based on the fact that the presence of the magnetic field during sintering accelerates the reaction and diffusion process and reduces the reaction temperature, the present invention avoids the growth of alloy crystal grains at high temperature, and finally obtains a composite material with good comprehensive performance and high practical value.

Description

technical field [0001] The invention belongs to the field of composite material preparation, and relates to a preparation method of a particle-reinforced aluminum-based composite material, in particular to a high-entropy alloy particle-reinforced aluminum-based composite material and a magnetic field-assisted preparation method. Background technique [0002] Aluminum matrix composites have the advantages of high specific strength and specific stiffness, good thermal stability, good thermal conductivity, and corrosion resistance, so they are widely used in advanced technologies such as aerospace, optical instruments, and electronic packaging. The uniform dispersion of reinforcing particles in the matrix can obtain a composite material with uniform structure and uniform performance. Reinforcing particle content and size are two important factors affecting particle distribution. Particles with small particle size help to improve the performance of composite materials. The more ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/04B22F3/04B22F3/105B22F9/04
CPCB22F3/04B22F3/105B22F9/04B22F2003/1054B22F2009/041B22F2009/043B22F2202/05B22F2999/00C22C1/0416C22C21/00
Inventor 王宏明谭祥任文祥曹自立李桂荣韩天宇
Owner JIANGSU UNIV