Ti2AlC reinforced titanium matrix composite material and preparation method and application thereof

A titanium-based composite material and titanium alloy technology, applied in the field of metal-based composite materials, can solve the problem of no Ti, etc., and achieve the effects of improving elastic modulus and wear resistance, reducing plasticity reduction, and good strengthening and toughening effect.

Active Publication Date: 2019-02-01
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of MAX phase as a reinforcement phase in metal matrix composites has broad applicati

Method used

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  • Ti2AlC reinforced titanium matrix composite material and preparation method and application thereof
  • Ti2AlC reinforced titanium matrix composite material and preparation method and application thereof
  • Ti2AlC reinforced titanium matrix composite material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Production of Ti by Sintering with Spark Plasma Technology 2 AlC reinforced titanium matrix composites, using Ti 2 AlC powder and spherical TA1 pure titanium powder are used as raw materials. A cylindrical composite material sintered body with a diameter of 20 mm and a height of 12 mm was prepared.

[0036] Specific steps are as follows:

[0037] (1) Weigh 10g TA1 powder (purity is 99.5%) and mass fraction is 0.5wt% Ti 2 AlC powder, first weigh a good Ti 2 Put the AlC powder in a beaker, add absolute ethanol, vibrate for 20 minutes by an ultrasonic oscillator, then add the weighed TA1 powder into the above solution, and repeat the above oscillation operation for 20 minutes.

[0038] (2) Take the preliminarily mixed powder solution and place it in a ball milling tank at a ball-to-material ratio of 10:1. The ball milling medium is absolute ethanol. On a planetary ball mill at a speed of 250r / min, it is rotated forward and backward for 2.5 h procedure, ball milling ti...

Embodiment 2

[0043] Production of Ti by hot pressing and sintering 2 AlC reinforced titanium matrix composites, using Ti 2 AlC powder and spherical TA15 powder are used as raw materials. A cylindrical composite material sintered body with a diameter of 20 mm and a height of 12 mm was prepared.

[0044] Specific steps are as follows:

[0045] (1) Weigh 10gTA15 powder (purity is 99%) and mass fraction is the Ti of 1.0wt% 2 AlC powder, first weigh a good Ti 2 Put the AlC powder in a beaker, add absolute ethanol, vibrate for 15 minutes by an ultrasonic oscillator, then add the weighed TA15 powder into the above solution, and repeat the above oscillation operation for 30 minutes.

[0046] (2) Take the preliminarily mixed powder solution and place it in a ball milling tank at a ball-to-material ratio of 10:1. The ball milling medium is absolute ethanol. On a planetary ball mill at a speed of 250r / min, it is rotated forward and backward for 2.5 h procedure, ball milling time is 5h, fully bal...

Embodiment 3

[0051] Production of Ti by Vacuum Pressureless Sintering 2 AlC reinforced titanium matrix composites, using Ti 2 AlC powder and spherical TC4 powder are used as raw materials. A cylindrical composite material sintered body with a diameter of 20 mm and a height of 15 mm was prepared. Specific steps are as follows:

[0052] (1) Weigh 10gTC4 powder (purity is 99%) and mass fraction is the Ti of 1.5wt% 2 AlC powder, first weigh a good Ti 2 Put the AlC powder in a beaker, add absolute ethanol, vibrate for 10 minutes by an ultrasonic oscillator, then add the weighed TC4 powder into the above solution, and repeat the above oscillation operation for 25 minutes.

[0053] (2) Take the preliminarily mixed powder solution and place it in a ball mill tank at a ball-to-material ratio of 10:1. The ball mill medium is absolute ethanol. On a planetary ball mill at a speed of 200r / min, turn forward and reverse for 3 hours. According to the program, the ball milling time is 6h, and the ball...

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Abstract

The invention discloses a Ti2AlC reinforced titanium matrix composite material and a preparation method thereof. The composite material mainly takes a titanium alloy as a matrix and Ti2AlC as a reinforcing phase, and a block composite material is obtained through a powder metallurgy process. Ti2AlC, as one of the representatives of MAX phase ceramic materials, has a ternary layered structure and integrates the advantages of the ceramic materials and metal materials, the density is low, the modulus and toughness are high, the electrical and thermal conductivity is good, thermal shock resistanceis achieved, the friction coefficient is low, and self-lubrication is realized; and the interface bonding with the titanium matrix is good, the hardness, strength, elastic modulus and wear resistanceof the titanium alloy can be significantly improved, and higher shaping is maintained. The Ti2AlC reinforced titanium matrix composite material can be applied to automobile manufacturing and aerospace manufacturing industries.

Description

technical field [0001] The present invention relates to a kind of Ti 2 The invention relates to an AlC reinforced titanium-based composite material and its preparation method and application, belonging to the technical field of metal-based composite materials. Background technique [0002] Titanium and titanium alloys are important metal materials in the aerospace industry such as passenger aircraft and military aircraft. They have the advantages of good strength, low density, and good corrosion resistance. The density of titanium alloy is 4.6g / cm 3 Left and right, when used in aviation, while reducing the weight of the airframe, its strength can be increased, so that the manufactured aircraft can meet the requirements of light weight, which is suitable for the manufacture of airframe components that have sensitive requirements for weight. At the same time, metal titanium can react with oxygen to form a dense oxide film on its surface, so that the metal itself will not be ...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C32/00C22C1/05
CPCC22C1/05C22C14/00C22C32/0052
Inventor 张法明杜茂龙
Owner SOUTHEAST UNIV
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