Preparation method of directionally-distributed TiB whisker reinforced titanium-based composite material

A titanium-based composite material, directional arrangement technology, applied in the field of metal-based composite materials, can solve the problem of not being able to maximize the strengthening effect of TiB whiskers, achieve good interface bonding and coherent relationship, small diameter, reduce matrix The effect of grain coarsening

Active Publication Date: 2018-11-13
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, regulating the arrangement of TiB whiskers by thermal deformation processing cannot maximize the strengthening effect of TiB whiskers.

Method used

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  • Preparation method of directionally-distributed TiB whisker reinforced titanium-based composite material
  • Preparation method of directionally-distributed TiB whisker reinforced titanium-based composite material
  • Preparation method of directionally-distributed TiB whisker reinforced titanium-based composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A preparation method of oriented TiB whisker reinforced titanium-based composite material, the method steps are as follows:

[0054] (1) Add 0.02g nano TiB 2 Add the powder and 19.98g TC4 powder into the ball mill tank of the SM-QB planetary ball mill, and add the ball and excess ethanol according to the ball-to-battery ratio of 2:1; ball mill for 0.5h at 600r / min and mix well Obtain a mixed slurry; pour the mixed slurry into a vacuum rotary evaporator, steam for 0.2h at a speed of 100r / min and a water bath temperature of 80°C, and obtain a mixed powder precursor after the ball milling medium is volatilized; The powder precursor is put into an electric heating constant temperature blast drying box and dried at 60° C. for 1 hour to obtain a mixed powder.

[0055] Among them, the grinding ball is composed of a large agate ball and a small agate ball with a mass ratio of 0.1:1, the diameter of the large agate ball is 10mm, and the diameter of the small agate ball is 1mm.

[0056...

Embodiment 2

[0081] A preparation method of oriented TiB whisker reinforced titanium-based composite material, the method steps are as follows:

[0082] (1) Add 0.09g nano TiB 2 Add powder and 19.91g of TC4 powder into the ball mill tank of SM-QB planetary ball mill, and add the ball and excess ethanol according to the ball-to-battery ratio of 4:1; ball mill for 2h at 300r / min, and mix well. Mixed slurry; Pour the mixed slurry into a vacuum rotary evaporator, and steam for 2 hours at a speed of 40r / min and a water bath temperature of 70°C. After the ball milling medium is volatilized, a mixed powder precursor is obtained; before the mixed powder The body is put into an electric heating constant temperature blast drying box and dried at 30°C for 0.5 h to obtain a mixed powder.

[0083] Among them, the grinding ball is composed of a large agate ball and a small agate ball with a mass ratio of 1:1, the diameter of the large agate ball is 10mm, and the diameter of the small agate ball is 5mm.

[008...

Embodiment 3

[0109] A method for preparing TiB whisker-reinforced titanium-based composite material with directional arrangement, the method steps are as follows:

[0110] (1) Add 6.00g nano TiB 2 The powder and 14.00g Ti powder are added to the ball milling tank of the SM-QB planetary ball mill, and the ball and excess ethanol are added according to the ball-to-battery ratio of 10:1; at a speed of 150r / min, the ball is milled for 5.0h and mixed evenly Obtain a mixed slurry; pour the mixed slurry into a vacuum rotary evaporator, steam for 0.5h at a speed of 40r / min and a water bath temperature of 70°C, and obtain a mixed powder precursor after the ball milling medium is volatilized; The powder precursor is put into an electric heating constant temperature blast drying box and dried at 30°C for 0.5 h to obtain a mixed powder.

[0111] Among them, the grinding ball is composed of a large agate ball and a small agate ball with a mass ratio of 10:1, the diameter of the large agate ball is 30mm, and...

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Abstract

The invention relates to a preparation method of a directionally-distributed TiB whisker reinforced titanium-based composite material, and belongs to the field of metal-based composite materials. Thepreparation method comprises the following steps that nano TiB2 powder and titanium powder, or nano TiB2 powder and titanium alloy powder are uniformly mixed; sintering treatment is carried out on themixed powder by adopting a discharge plasma system to obtain a composite material block body; and the dried composite material block body is packaged in a quartz tube in a vacuum mode, heat treatmentis carried out in a heat treatment furnace, and then the composite material is obtained by step-by-step cooling. The method can effectively regulate and control the organization evolution of a TiB whisker in the titanium-based composite material, the problem that the orientation regulation and control means of the TiB whisker is single is fully solved, a thermal deformation means is used for regulating and controlling the crystal whisker form, and the crystal whisker length-diameter ratio is greatly reduced and the like.

Description

Technical field [0001] The invention relates to a method for preparing a titanium-based composite material reinforced by oriented TiB whiskers, which belongs to the field of metal-based composite materials. Background technique [0002] Titanium and titanium alloy have a melting point of about 1660°C and a density of about 4.5g / cm 3 The refractory and lightweight metal has many advantages such as high strength, corrosion resistance, high temperature resistance, low temperature resistance, non-magnetic and small linear expansion coefficient. It is called "modern metal" and "space metal". Currently, titanium and titanium alloys are widely used in aircraft engines, skeletons, skins, fasteners and landing gear. [0003] However, with the increasing demand for high-performance materials in the fields of aviation, aerospace, and electromechanics, such as ultra-high-speed aircraft and next-generation high-performance aero-engines, the demand for lightweight, high-strength and high-tempera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C1/05C22C14/00C22C32/00C22F1/18C22F1/02
CPCC22C1/0458C22C1/05C22C14/00C22C32/0073C22F1/02C22F1/183
Inventor 张朝晖胡正阳程兴旺王富耻宋奇尹世攀王浩王虎
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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