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Method for preparing high-strength and high-plasticity titanium-graphene composite material based on graded compounding

A composite material, graphene technology, applied in graphene, chemical instruments and methods, carbon compounds, etc., can solve problems such as high strength and low plasticity, and achieve the effect of strong plastic matching

Active Publication Date: 2021-07-09
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using hierarchical composite structure design, adding step by step to control the powder morphology of graphene or titanium alloy matrix, on the one hand, by regulating the inhomogeneity of the reinforcement graphene and its in-situ synthesized TiC in the matrix, on the other hand, by regulating the particle size of the matrix The inhomogeneity of the material forms the difference in the scale structure, changes the deformation behavior inside the material, and then obtains a high-strength plastic titanium-based composite material with comprehensive properties, which solves the problem of high-strength and low-plasticity of titanium-based composite materials in the past.

Method used

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  • Method for preparing high-strength and high-plasticity titanium-graphene composite material based on graded compounding
  • Method for preparing high-strength and high-plasticity titanium-graphene composite material based on graded compounding
  • Method for preparing high-strength and high-plasticity titanium-graphene composite material based on graded compounding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weigh 0.1g of graphene microflakes with a diameter of 1μm and 100g of TC4 powder with a particle diameter of 200 mesh, put the graphene microflakes or TC4 powder into a ball mill in two steps for ball milling, and fill the ball mill with argon for protection , using alcohol as a process control agent;

[0018] In the first step of ball milling, put 50g of TC4 powder and all the graphene microflakes into a stainless steel ball mill jar, and perform ball milling on a planetary mill for 120 minutes; the balls are tungsten carbide balls, and the diameters of the tungsten carbide balls are 8mm respectively , 5mm, 2mm, the mass ratio is 5:3:2, the ball-material ratio is 20:1, and the speed is 300r / min.

[0019] In the second step of ball milling, wait for the stainless steel tank to cool down, add the remaining 50g of TC4 powder to the mixed powder obtained in the first step of ball milling, continue ball milling for 120min to obtain a heterogeneously dispersed titanium-graph...

Embodiment 2

[0021] Weigh 0.5g of graphene microflakes with a sheet diameter of 3μm and 100g of Ti powder with a particle size of 500 mesh respectively, put the graphene microflakes or Ti powder into a ball mill in two steps for ball milling, and fill the ball mill with argon for protection , using alcohol as a process control agent;

[0022] In the first step of ball milling, put 80g of Ti powder and all the graphene microflakes into a stainless steel ball mill jar, and perform ball milling on a planetary mill for 240 minutes; the balls are tungsten carbide balls, and the diameters of the tungsten carbide balls are 8mm , 5mm, 2mm, the mass ratio is 5:3:2, the ball-material ratio is 10:1, and the speed is 300r / min.

[0023] In the second step of ball milling, when the stainless steel tank is cooled, add the remaining 20g of Ti powder to the mixed powder obtained in the first step of ball milling, and continue ball milling for 60 minutes to obtain a heterogeneously dispersed titanium-graphe...

Embodiment 3

[0025] Weigh 0.3g of graphene microflakes with a diameter of 2μm and 100g of Ti powder with a particle diameter of 500 mesh respectively, put the graphene microflakes or Ti powder into a ball mill in two steps for ball milling, and fill the ball mill with argon gas for protection , using alcohol as a process control agent;

[0026] In the first step of ball milling, put 0.15g of graphene microflakes and all Ti powder into a stainless steel ball mill jar, and perform ball milling on a planetary mill for 240 minutes; the balls are tungsten carbide balls, and the diameters of tungsten carbide balls are respectively 8mm, 5mm, 2mm, the mass ratio is 5:3:2, the ball-material ratio is 10:1, and the speed is 300r / min.

[0027] During the second step of ball milling, when the stainless steel tank is cooled, add the remaining 0.15g of graphene microflakes to the mixed powder obtained in the first step of ball milling, and continue ball milling for 60 minutes to obtain a heterogeneously ...

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Abstract

The invention belongs to the technical field of advanced metal-based composite material preparation, and particularly relates to a method for preparing a high-strength and high-plasticity titanium-graphene composite material based on graded compounding. A graphene powder material or titanium alloy powder is added into a ball milling tank in two steps for ball milling, and densification sintering molding is carried out to obtain the high-strength and high-plasticity titanium-graphene composite material with a graded scale structure. Graphene nanoplatelets are used as reinforcement, titanium and titanium alloy are used as a matrix, a graded composite configuration design is adopted, and the powder form of the graphene or titanium alloy matrix is regulated through step-by-step adding. The difference in the scale structure is formed by regulating and controlling the non-uniformity of the reinforcement graphene and TiC synthesized in situ in the matrix and by regulating and controlling the non-uniformity of the particle size of the matrix, the deformation behavior in the material is changed, then the high-strength and high-plasticity titanium-based composite material with comprehensive performance is obtained, and the problem that an existing titanium-based composite material is high in strength but low in plasticity is solved.

Description

technical field [0001] The invention belongs to the technical field of preparation of advanced metal matrix composite materials, and specifically relates to a method for increasing high-strength plasticity of graphene-titanium composite materials based on hierarchical composite design. Background technique [0002] Titanium and titanium alloy materials have many advantages such as low density, high specific strength, excellent corrosion resistance and high temperature performance. Fasteners such as nuts and screws, as large as structural parts such as fuselage frames and bulkheads. However, the rapid development of modern industrial technology has continuously put forward higher requirements for the further promotion and application of ferroalloy materials. The preparation of titanium-based composite materials with higher strength and toughness matching to meet the application requirements under more severe conditions is currently a hot spot in the field of titanium alloy re...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C1/10C22C14/00B22F9/04B22F3/105C01B32/194
CPCC22C1/05C22C14/00B22F9/04B22F3/105C01B32/194B22F2009/043C01B2204/32Y02P10/25
Inventor 董龙龙周廉崔文芳张于胜
Owner NORTHEASTERN UNIV
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