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Particle reinforced titanium-based composite material and preparation method thereof

A titanium-based composite material and particle reinforcement technology, applied in the field of powder metallurgy materials, can solve the problems of difficult thermal processing, difficult thermal processing of composite materials, complicated preparation process, etc., achieve good high temperature and low temperature mechanical properties, and have good industrialization prospects. The effect of simple process method

Inactive Publication Date: 2012-07-25
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, thermal processing of composites containing coarse TiC dendrites is very difficult
In summary, the preparation of titanium-based composites, especially those with high molybdenum and vanadium content, using traditional casting methods is complex and difficult in thermal processing. It is necessary to develop new preparation processes

Method used

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  • Particle reinforced titanium-based composite material and preparation method thereof
  • Particle reinforced titanium-based composite material and preparation method thereof
  • Particle reinforced titanium-based composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 0.3Kg of Mo2C alloy powder with an average particle size of 3μm, and 9.7Kg of hydrogenated dehydrogenation titanium powder with an average particle size of 38μm, mix the above powders thoroughly and press them into a rod-shaped green body under a pressure of 150MPa, and then put the pressed green body into a vacuum Sintering furnace at 1.0×10 -3 The Ф122 titanium-based composite material sintered compact was made by sintering at 1350°C / 3 hours under Pa vacuum. Then the sintered green body is heated once at 1100°C and then extruded into Ф11 rods with an extrusion ratio of 123.

Embodiment 2

[0023] Weigh 0.18Kg of Mo2C alloy powder with an average particle size of 10 μm and 2.82 Kg of hydrogenated dehydrogenation titanium powder with an average particle size of 147 μm, fully mix the above powders and press them under a pressure of 400 MPa, then put the compact into a vacuum sintering furnace at 1.0 ×10 -2 The Ф76 titanium-based composite material sintered compact was made by sintering at 1250°C / 2 hours under Pa vacuum. Then the sintered body is heated at 1000°C and then extruded into a Ф12 bar with an extrusion ratio of 40.

Embodiment 3

[0025] Weigh 0.36Kg of Mo2C alloy powder with an average particle size of 5 μm and 2.64Kg of hydrogenated dehydrogenation titanium powder with an average particle size of 74 μm, fully mix the above powders and press them under a pressure of 300 MPa, then put the compact into a vacuum sintering furnace at 1.0 ×10 -3 The Ф76 titanium-based composite material sintered compact was made by sintering at 1250°C / 2 hours under Pa vacuum. Then the sintered green body is heated at 1100°C and then extruded multiple times into a Ф12 rod with an extrusion ratio of 40.

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PUM

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Abstract

The invention discloses a particle reinforced titanium-based composite material. The particle reinforced titanium-based composite material comprises at least 3 to 20 weight percent of one of metal carbides of Mo2C or VC, the balance of metallic titanium. The preparation method of the particle reinforced titanium-based composite material comprises the following steps: fully mixing Mo2C, VC or a mixture of Mo2C and VC, and hydride-dehydrogenated titanium powder according to proportion, pressing, sintering at high temperature, and deforming the sintered green body at 900 to 1,200 DEG C. The particle reinforced titanium-based composite material has simple process, easy operation, reasonable component proportion, good combination of particle reinforced phase and substrate, uniform distribution, high intensity, corrosion resistance, excellent high temperature performance, low energy consumption and high production efficiency. The particle reinforced titanium-based composite material is suitable for commercial process and has excellent industrialization prospect.

Description

technical field [0001] The invention relates to a particle-reinforced titanium-based composite material and a preparation method thereof, belonging to the technical field of powder metallurgy materials. Background technique [0002] Due to the advantages of high specific strength, corrosion resistance, and high temperature performance, titanium and titanium alloys have been widely used in aviation, aerospace, chemical and energy fields, and have increasingly become a structural material with good comprehensive properties. Molybdenum and vanadium are commonly used alloying elements in titanium alloys. They have the same lattice type as β-titanium. They are infinitely dissolved in β-titanium to form a continuous solid solution. They have a good solid-solution strengthening effect on titanium alloys and can improve Corrosion resistance of titanium alloys. TiC particles have high hardness, melting point, high specific strength and specific stiffness, and good chemical stability...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C32/00C22C14/00C22C1/05
Inventor 刘咏刘延斌王斌汤慧萍贾文鹏贺卫卫
Owner CENT SOUTH UNIV