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Preparation methods of layered titanium matrix composite material

A titanium-based composite material and layered technology is applied in the field of preparation of titanium-based composite materials, which can solve the problems of poor plasticity of layered titanium-based composite materials, achieve good delayed fracture, improve uniform plastic deformation, and avoid oxidation effects.

Inactive Publication Date: 2012-09-19
HEILONGJIANG PATENT TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the technical problem of poor plasticity of the existing layered titanium-based composite material, and provides a preparation method of the layered titanium-based composite material

Method used

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  • Preparation methods of layered titanium matrix composite material
  • Preparation methods of layered titanium matrix composite material
  • Preparation methods of layered titanium matrix composite material

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specific Embodiment approach 1

[0023] Embodiment 1: The preparation method of the layered titanium-based composite material of this embodiment is carried out according to the following steps:

[0024] 1. Preparation of mixed powder: Weigh 85% to 97% of Ti particles with a particle size of 80 to 200 μm and 3% to 15% of TiB with a particle size of 3 to 10 μm by volume percentage 2 The powder is added into a planetary ball mill, the mass ratio of the ball to material is 4-5:1, and the ball mills for 4-12 hours under the condition of a rotating speed of 100-250 rpm to obtain a mixed powder;

[0025] The purpose of the low-energy ball milling in this step is to make TiB 2 The powder evenly adheres to the surface of the spherical Ti particles, and can ensure that the Ti particles will not be broken.

[0026] Two, the preparation of powder paste: according to the mass ratio of polyethanol solution and mixed powder is 1: 20~25, weigh polyethanol solution and the mixed powder prepared in step 1 and stir evenly, obt...

specific Embodiment approach 2

[0030] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1, 90% to 95% of Ti particles with a particle size of 90 to 180 μm and 5% to 10% of Ti particles with a particle size of 5 to 10 μm are weighed by volume percentage 8 μm TiB 2 The powder is added into a planetary ball mill, the mass ratio of the ball to material is 4.2-4.8:1, and the ball mills for 6-10 hours under the condition of a rotating speed of 150-200 rpm to obtain a mixed powder. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0031] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the mass ratio of the polyethanol solution to the mixed powder in step 2 is 1:22-24. Others are the same as in the first embodiment.

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Abstract

The invention relates to preparation methods of a layered titanium matrix composite material. The invention aims to solve the technical problem that current layered titanium matrix composite material is poor in plasticity. One of the methods comprises the steps of: ball-milling Ti particles and TiB2 powder and adding a polyethylene glycol solution into the Ti particles and TiB2 powder to agitate for forming a pasty shape; coating the paste between Ti plates; drying the Ti plates to obtain a sandwich type slab; and then hot-forming to obtain the layered titanium matrix composite material. The other one of the methods comprises the steps of: ball-milling Ti particles and TiB2 powder and adding a polyethylene glycol solution into the Ti particles and TiB2 powder to agitate for forming a pasty shape; pugging with a double rolling mill; then becoming mouldiness; then rolling into membranes by the double rolling mill; clamping the membranes between the Ti plates and pressing to obtain the sandwich type slab; and then hot-forming to obtain the layered titanium matrix composite material. The coefficient of elongation of the layered titanium matrix composite material prepared by the invention is 16-18% and the layered titanium matrix composite material can be applied to the aerospace field.

Description

technical field [0001] The invention relates to a preparation method of a titanium-based composite material. Background technique [0002] Due to its high specific strength, specific stiffness and high temperature resistance, titanium matrix composites have become candidate materials for hypersonic aerospace vehicles and next-generation advanced aeroengines. At present, the traditional production processes of layered titanium matrix composites include: rolling cladding, diffusion welding, mechanical joining, electrochemical deposition, thermal spraying, surface welding and consumable arc melting. Due to the weak interface layer of the titanium-based composite material prepared by the existing method, there are often holes between the layers, the plasticity is less than 3%, and even brittle fracture occurs without yielding. Contents of the invention [0003] The invention aims to solve the technical problem of poor plasticity of the existing layered titanium-based composit...

Claims

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Application Information

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IPC IPC(8): B22F7/04B22F1/00C22C47/20C22C47/14C22C101/22
Inventor 耿林刘宝玺黄陆军王桂松崔喜平
Owner HEILONGJIANG PATENT TECH DEV
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