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TiNx reinforced high-entropy alloy combined Ti(C,N) based composite material and preparation method thereof

A high-entropy alloy and composite material technology is applied in the field of high-entropy alloy-bonded Ti-based composite materials and their preparation, which can solve the problems of complex preparation process and further improvement of alloy performance.

Inactive Publication Date: 2020-11-13
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above preparation methods all have the defect of complex preparation process, and the performance of the alloy needs to be further improved.

Method used

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  • TiNx reinforced high-entropy alloy combined Ti(C,N) based composite material and preparation method thereof
  • TiNx reinforced high-entropy alloy combined Ti(C,N) based composite material and preparation method thereof
  • TiNx reinforced high-entropy alloy combined Ti(C,N) based composite material and preparation method thereof

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Experimental program
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preparation example Construction

[0022] The invention provides a TiN x A method for preparing a Ti(C,N)-based composite material combined with an enhanced high-entropy alloy, comprising the following steps:

[0023] CoCrNiCuMn powder, TiN x Powder, AlN powder and TiC powder are mixed by ball milling to obtain a mixture; wherein TiN x x in the powder is 0.3-0.9; based on the total mass of the mixture as 100%, the mass percentage of the CoCrNiCuMn powder is 5-20wt.%, the TiN x The mass percentage of the powder is 20-50 wt.%, the mass percentage of the AlN powder is 2-10 wt.%, and the balance is TiC powder;

[0024] The mixture is vacuum hot-pressed and sintered to obtain TiN x Reinforced high-entropy alloy-bonded Ti(C,N)-based composites.

[0025] The present invention will CoCrNiCuMn powder, TiN x The powder, the AlN powder and the TiC powder are ball-milled and mixed to obtain a mixture. In the present invention, the ball mill mixing is preferably carried out in an argon atmosphere; the ball-to-material...

Embodiment 1

[0041] S1. The TiC raw material is subjected to ball milling, the mass ratio of the ball to the material is 10:1, the speed is 400r / min, the ball mill is 40h, every revolution is 5h and the machine is stopped for 10min to dissipate heat, and TiC powder with a particle size below 150nm is obtained;

[0042] S2. Mix 15.24g Ti powder and 4.76g CH in an argon-filled glove box 4 N 2 O is loaded into a WC cemented carbide ball mill tank, the mass ratio of the ball to material is 10:1, the rotating speed is 500r / min, the ball milling time is 30h, and the machine is shut down for 30min every 10h to dissipate heat, so as to obtain TiN with a particle size below 150nm 0.5 powder;

[0043] S3. In a glove box filled with argon, 4.05g Co powder, 3.65gCr powder, 4.04gNi powder, 4.41gCu powder and 3.85gMn powder are mixed into a WC cemented carbide ball mill jar, the mass ratio of ball to material is 10:1, The rotation speed is 600r / min, the ball milling time is 50h, stop for 30min every 5...

Embodiment 2

[0052] S1, the TiC raw material is subjected to ball milling, the mass ratio of the ball to material is 15:1, the speed is 300r / min, the ball mill is 30h, and the machine is stopped for 10min for every 5h to dissipate heat, so as to obtain a TiC powder with a particle size below 150nm;

[0053] S2. Mix 13.915g Ti powder and 6.085g CH in a glove box filled with argon 4 N 2 O is put into a WC cemented carbide ball mill tank, the ball mass ratio is 15:1, the speed is 400r / min, the ball milling time is 40h, every 10h stop for 30min to dissipate heat, and TiN with a particle size below 150nm is obtained 0.7 powder;

[0054] S3. In a glove box filled with argon, 4.05g Co powder, 3.65gCr powder, 4.04gNi powder, 4.41gCu powder and 3.85gMn powder are mixed into a WC cemented carbide ball mill jar, the mass ratio of ball to material is 15:1, The rotation speed is 300r / min, the ball milling time is 30h, stop for 30min to dissipate heat every 5h, stop every 10h to scrape off the raw mat...

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Abstract

The invention relates to the technical field of composite materials, in particular to a TiNx reinforced high-entropy alloy combined Ti(C,N) based composite material and a preparation method thereof. The preparation method of the TiNx reinforced high-entropy alloy combined Ti(C,N) based composite material is provided. According to the TiNx reinforced high-entropy alloy combined Ti(C,N) based composite material and the preparation method thereof, CoCrNiCuMn is used as a binder of Ti(C,N) based hard alloy, TiC and non-stoichiometric ratio TiNx (x=0.3-0.9) are used as the hard phase, AlN is used as the reinforced phase, the method of vacuum hot-pressing sintering is adopted for preparing the novel Ti(C,N) based hard alloy, the sintering temperature can be lowered on the basis of improving themechanical property, the preparation process is simplified and production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a TiN x Reinforced high-entropy alloy bonded Ti(C,N)-based composites and methods for their preparation. Background technique [0002] With the continuous development of Ti(C,N)-based cemented carbide in related industries, the requirements for its performance are getting higher and higher, so a new type of Ti(C,N)-based cemented carbide with high hardness and high toughness has been developed. Alloys are very important. In recent years, high-entropy alloys (HEAs) have been widely studied due to their excellent properties. HEA composed of various principal components has a series of characteristics such as high entropy effect, lattice distortion effect, slow diffusion effect and cocktail effect, so that it has excellent physical, chemical and mechanical properties, such as high strength, high hardness, high resistance Abrasiveness, high corrosion resistance and hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/04C22C1/05B22F9/04B22F3/14
CPCB22F3/14B22F9/04B22F2009/043B22F2998/10C22C1/058C22C29/005C22C29/04
Inventor 李艳国邹芹王明智熊建超
Owner YANSHAN UNIV
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