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High-plasticity quasi-mesh-shaped structure titanium-based composite material and preparation method thereof

A titanium-based composite material, mesh structure technology, applied in metal processing equipment, transportation and packaging, etc., can solve problems such as difficulty in obtaining reinforcement effects, and achieve the effects of avoiding voids/voids, enhancing reinforcement effects, and high elongation plasticity.

Active Publication Date: 2019-10-18
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

More and more studies have shown that although discontinuous metal materials with uniform distribution of reinforcements have many excellent properties compared with single metal materials, it is difficult to obtain ideal reinforcement effects.

Method used

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  • High-plasticity quasi-mesh-shaped structure titanium-based composite material and preparation method thereof
  • High-plasticity quasi-mesh-shaped structure titanium-based composite material and preparation method thereof
  • High-plasticity quasi-mesh-shaped structure titanium-based composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The highly plastic quasi-reticular titanium-based composite material in this embodiment uses CT20 titanium alloy as the matrix, and uses the in-situ self-generated TiC phase and TiC@graphene of graphene and CT20 titanium alloy matrix as reinforcements. The reinforcements are uniform and Discontinuously distributed at the original β grain boundary of the CT20 titanium alloy matrix, forming a quasi-network structure, the average diameter of the mesh in the quasi-network structure is 60 μm.

[0037] The preparation method of the highly plastic quasi-network structure titanium-based composite material of the present embodiment comprises the following steps:

[0038] Step 1. Surface pretreatment of CT20 titanium alloy powder: immerse 220 g of CT20 titanium alloy spherical powder particles in a 2M mixed acid solution for acid leaching for 15 minutes. The mixed acid solution consists of a hydrochloric acid solution with a mass concentration of 37% and a mass concentration of 40...

Embodiment 2

[0050] The highly plastic quasi-reticular titanium-based composite material in this embodiment uses CT20 titanium alloy as the matrix, and uses the in-situ self-generated TiC phase and TiC@graphene of graphene and CT20 titanium alloy matrix as reinforcements. The reinforcements are uniform and Discontinuously distributed at the original β grain boundary of the CT20 titanium alloy matrix, forming a quasi-network structure, the average diameter of the mesh in the quasi-network structure is 150 μm.

[0051] The preparation method of the highly plastic quasi-network structure titanium-based composite material of the present embodiment comprises the following steps:

[0052] Step 1, CT20 titanium alloy powder surface pretreatment: immerse 220g of CT20 titanium alloy spherical powder particles into a 5M mixed acid solution for acid leaching for 5 minutes, and the mixed acid solution consists of a hydrochloric acid solution with a mass concentration of 37% and a mass concentration of ...

Embodiment 3

[0058] The highly plastic quasi-network structure titanium-based composite material in this embodiment uses TA1 pure titanium as the matrix, and uses the in-situ self-generated TiC phase and TiC@graphene of graphene and TA1 pure titanium matrix as reinforcements, and the reinforcements are uniform and Discontinuously distributed at the original β grain boundary of the TA1 pure titanium matrix, forming a quasi-network structure, the average diameter of the mesh in the quasi-network structure is 100 μm.

[0059] The preparation method of the highly plastic quasi-network structure titanium-based composite material of the present embodiment comprises the following steps:

[0060] Step 1. Surface pretreatment of TA1 pure titanium powder: immerse 220 g of TA1 pure titanium spherical powder particles into a 3M mixed acid solution for acid leaching for 10 minutes. The mixed acid solution consists of a hydrochloric acid solution with a mass concentration of 37% and a mass concentration ...

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Abstract

The invention discloses a high-plasticity quasi-mesh-shaped structure titanium-based composite material. Titanium or a titanium alloy is used as a substrate, the TiC phase synthesized on the Ti substrate in situ and TiC@graphene synthesized on the Ti substrate in situ are used as enhancement bodies, the enhancement bodies are evenly and discontinuously distributed at the position of the original beta grain boundary of the Ti substrate, and a quasi-mesh-shaped structure is formed. The invention further discloses a preparation method of the high-plasticity quasi-mesh-shaped structure titanium-based composite material. According to the method, titanium-based spherical powder particles with rough surfaces are added in a graphene nanosheet suspension solution, mixed powder is prepared, and spark plasma sintering is conducted. By means of distribution states and structures of the enhancement bodies, namely, the TiC phase and the TiC@graphene, in the titanium-based composite material, the enhancement phase surrounded substrate is obtained, strength of the titanium-based composite material is improved, and extension plasticity of the titanium-based composite material is ensured. Accordingto the high-plasticity quasi-mesh-shaped structure titanium-based composite material, by conducting titanium-based powder surface pretreatment and wet method material mixing, the blending degree of the graphene and the titanium substrate is increased, and the defect that the room temperature deformation capacity and extension plasticity of the graphene titanium-based composite material are poor isovercome.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a highly plastic quasi-network structure titanium-based composite material and a preparation method thereof. Background technique [0002] Titanium and titanium alloys are one of the main structural materials of aircraft and engines, and are used for key components such as compressor discs and blades, engine covers, exhaust devices, and aircraft frame frames. Aerospace vehicles mainly use the high specific strength, corrosion resistance and low temperature resistance of titanium alloys to manufacture various pressure vessels, fuel tanks, fasteners, instrument straps, frames and rocket shells. In recent years, with the rapid development of my country's aerospace industry, higher requirements have been placed on the thrust and thrust-to-weight ratio of aircraft / aircraft, resulting in a great increase in the pressure ratio, combustion chamber tempe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/04B22F1/02B22F3/105B22F3/14
CPCC22C14/00C22C1/0458B22F3/105B22F3/14B22F2003/1051B22F1/16
Inventor 卢金文董龙龙霍望图张于胜赵永庆于佳石张伟刘跃李亮
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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