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Microalloying synergistically strengthened graphene titanium-based composite material and preparation method thereof

A titanium-based composite material and micro-alloying technology, applied in metal processing equipment, transportation and packaging, etc., can solve problems that violate the original intention and application, affect the service life and scope of use of titanium-based composite materials, achieve uniform distribution, avoid The effect of spreading the problem

Active Publication Date: 2020-06-12
西安稀有金属材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the dispersion of graphene and serious interfacial reaction problems in the composite process of graphene and titanium matrix lead to the aggregation of a large number of in-situ self-generated TiC nanoparticles and no graphene retention, which seriously affects the service of titanium matrix composites. Life and range of use, thus violating the original intention and application of graphene-enhanced titanium matrix composites design

Method used

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  • Microalloying synergistically strengthened graphene titanium-based composite material and preparation method thereof
  • Microalloying synergistically strengthened graphene titanium-based composite material and preparation method thereof
  • Microalloying synergistically strengthened graphene titanium-based composite material and preparation method thereof

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Embodiment 1

[0038] The micro-alloying synergistically strengthened graphene-titanium-based composite material of this embodiment uses CT20 titanium alloy as the substrate, and the nickel metal for micro-alloying is uniformly coated on the surface of the CT20 titanium alloy substrate in a quasi-continuous manner through physical bonding. Dispersed on the outer surface of CT20 titanium alloy coated with metallic nickel for microalloying, with TiC nanoparticles and Ti 2 The Ni nanoparticles collectively form a quasi-continuous network; the average grain size in the network is 150 μm.

[0039] The preparation method of the microalloying synergistically strengthened graphene-titanium-based composite material of the present embodiment comprises the following steps:

[0040] Step 1. Selection of powder: Select 200g of spherical CT20 titanium alloy powder with a particle size of 80-120 mesh and a sphericity of 0.8 as the matrix powder, and select 4g of flake nickel powder with a particle size of ...

Embodiment 2

[0055] The micro-alloying synergistically strengthened graphene-titanium-based composite material in this embodiment uses CT20 titanium alloy as the substrate, and the metal silver for micro-alloying is uniformly coated on the surface of the CT20 titanium alloy substrate in a quasi-continuous manner through physical bonding. Dispersed on the outer surface of the CT20 titanium alloy matrix coated with metallic silver for microalloying, with TiC nanoparticles and Ti 2 The Ag nanoparticles collectively form a quasi-continuous network; the average grain size in the network is 100 μm.

[0056] The preparation method of the microalloying synergistically strengthened graphene-titanium-based composite material of the present embodiment comprises the following steps:

[0057] Step 1. Selection of powder: Select 200g of spherical CT20 titanium alloy powder with a particle size of 80 mesh to 120 mesh and a sphericity of 0.85 as the matrix powder, and 5g of flake silver powder with a part...

Embodiment 3

[0068] The micro-alloying synergistically strengthened graphene-titanium-based composite material in this embodiment uses CT20 titanium alloy as the substrate, and the metal silver for micro-alloying is uniformly coated on the surface of the CT20 titanium alloy substrate in a quasi-continuous manner through physical bonding. Dispersed on the outer surface of the CT20 titanium alloy matrix coated with metallic silver for microalloying, with TiC nanoparticles and Ti 2 The Ag nanoparticles collectively form a quasi-continuous network; the average grain size in the network is 120 μm.

[0069] The preparation method of the microalloying synergistically strengthened graphene-titanium-based composite material of the present embodiment comprises the following steps:

[0070] Step 1. Selection of powder: Select 200g of spherical CT20 titanium alloy powder with a particle size of 100 mesh to 150 mesh and a sphericity of 0.85 as the base powder, and 2g of flake silver powder with a parti...

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Abstract

The invention discloses a microalloying synergistically strengthened graphene titanium-based composite material. The microalloying synergistically strengthened graphene titanium-based composite material takes titanium or titanium alloy as a matrix, metal for microalloying is uniformly coated on the surface of the titanium or titanium alloy matrix in a quasi-continuous manner through a physical bonding manner, graphene is dispersed on the outer surface of the metal-coated titanium or titanium alloy matrix for microalloying, the graphene is dispersed on the outer surface of the metal-coated titanium or titanium alloy matrix, the graphene, in-situ synthesized TiC nanoparticles and intermetallic compound particles jointly form a quasi-continuous net structure; and the invention further discloses a preparation method of the microalloying synergistically reinforced graphene titanium-based composite material, and the preparation method comprises the following steps of ball milling the raw material powder, uniformly stirring with the graphene nanosheet suspension solution, drying, and carrying out hot pressed sintering. According to the microalloying synergistically strengthened graphene titanium-based composite material and the preparation method thereof, microalloying metal coating is adopted, so that direct contact between graphene and the matrix is avoided, the distribution uniformity and structural integrity of the graphene are improved, the graphene, TiC nanoparticles and intermetallic compound particles have a synergistic reinforcing effect; and the method is high in operability, and the microalloying synergistically strengthened graphene titanium-based composite material is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of metal-based composite material preparation, and in particular relates to a microalloyed synergistically strengthened graphene-titanium-based composite material and a preparation method thereof. Background technique [0002] Titanium matrix composites have low density, high specific strength and excellent high temperature resistance, and have broad development prospects in the fields of aerospace and automobile manufacturing. By introducing reinforcements with high modulus, high hardness and good high-temperature performance into titanium and titanium alloys, the interaction between the toughness and ductility of the titanium matrix and the high strength and high modulus of the reinforcements can be fully utilized to obtain mechanical properties higher than those of titanium alloys. More excellent titanium-based composite materials. Therefore, as an ideal metal matrix structural composite material, titani...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/10B22F9/04B22F1/00B22F1/02B22F3/105
CPCB22F1/0003C22C14/00C22C1/10B22F9/04B22F3/105B22F2009/043B22F2003/1051B22F1/16
Inventor 卢金文刘跃董龙龙霍望图李亮张于胜赵永庆
Owner 西安稀有金属材料研究院有限公司
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