A kind of highly plastic quasi-network structure titanium-based composite material and its preparation method

A titanium-based composite material and network structure technology, which is 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, increasing strength, and increasing shear strength

Active Publication Date: 2020-12-18
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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  • A kind of highly plastic quasi-network structure titanium-based composite material and its preparation method
  • A kind of highly plastic quasi-network structure titanium-based composite material and its preparation method
  • A kind of highly plastic quasi-network structure titanium-based composite material and its preparation method

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Experimental program
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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 titanium-based composite material with a high-plasticity quasi-network structure, which uses titanium or titanium alloy as a matrix, uses graphene and Ti matrix in-situ self-generated TiC phase, TiC@graphene as a reinforcement, and the reinforcement is uniform and It is discontinuously distributed at the original β grain boundary of the Ti matrix to form a quasi-network structure; the invention also discloses a preparation method of a high-plasticity quasi-network structure titanium-based composite material, which uses rough-surfaced titanium-based spherical The powder particles are added to the suspension solution of graphene nanosheets to prepare mixed powder, and then spark plasma sintering is carried out. The distribution state and structure of the TiC phase and TiC@graphene reinforcement in the titanium-based composite material of the present invention realize that the strengthening phase surrounds the matrix, which improves the strength of the titanium-based composite material and ensures its extensional plasticity; Pretreatment and wet mixing increase the mixing degree of graphene and titanium matrix, and overcome the shortcomings of poor room temperature deformation ability and poor ductility of graphene titanium matrix composites.

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 Patents(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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