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Ti-Ti2AlC/TiAl3 laminated composite material with cylindrical alternately-stacked structure and preparation method thereof

A composite material, stacking structure technology, applied in the Ti-Ti2AlC/TiAl3 laminated composite material and its preparation, the field of preparation materials, can solve the problem that blasting is prone to large cracks, the anti-penetration ability of laminated composite armor is limited, and it is difficult to deal with and other problems, to achieve the effect of dissipating the fracture energy, improving the hardness of the micro-zone, and reducing the degree of damage

Active Publication Date: 2019-09-27
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But Ti-TiAl 3 (The density is about 3.26g / cm 3 , Vickers hardness is about 5.5GPa) laminated composite armor has limited anti-penetration ability, and it is easy to produce large cracks when it is impacted and blasted. limitations

Method used

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  • Ti-Ti2AlC/TiAl3 laminated composite material with cylindrical alternately-stacked structure and preparation method thereof
  • Ti-Ti2AlC/TiAl3 laminated composite material with cylindrical alternately-stacked structure and preparation method thereof
  • Ti-Ti2AlC/TiAl3 laminated composite material with cylindrical alternately-stacked structure and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Example 1: Ti-Ti with a cylindrical staggered stacked structure 2 AlC / TiAl 3 A method for preparing a laminated composite material, comprising the steps of:

[0026] , Preparation of uniformly mixed composite powder: Aluminum powder with an average particle size of less than 30 μm and a purity of 99.7% and Ti with an average particle size of less than 70 μm and a purity of 96% 2 AlC powder is put into a ball mill with a molar ratio of 5:1 for ball milling. Set the ball milling ratio to 10:1, the rotational speed to 300r / min, and the ball milling time to be more than 8 hours. Add alcohol as a ball milling aid during the milling process, and the milling is complete. Then put the ball mill into the dryer to dry for 2 hours, and finally sieve the dried composite powder with a Retsch AS200 mechanical vibrating sieve, and the particle size of the powder is 200 mesh;

[0027] 1. Prepare TC4 foil layer: cut all TC4 foil layers with a thickness of 0.15mm into 100×100mm foi...

Embodiment 2

[0036] Example 2: Ti-Ti with a cylindrical staggered stacked structure 2 AlC / TiAl 3 A method for preparing a laminated composite material, comprising the steps of:

[0037] , Preparation of uniformly mixed composite powder: Aluminum powder with an average particle size of less than 30 μm and a purity of 99.9% and Ti with an average particle size of less than 70 μm and a purity of 98.5% 2 AlC powder is put into a ball mill with a molar ratio of 20:1 for ball milling. Set the ball milling ratio to 10:1, the speed to 300r / min, and the ball milling time to be more than 8 hours. Add alcohol as a ball milling aid during the milling process, and the milling is completed. Then put the ball mill into the drying machine to dry for 2 hours, and finally use the RetschAS200 mechanical vibrating sieve to sieve the dried composite powder. The particle size of the composite powder after sieving is 300 mesh;

[0038] 1. Prepare TC4 foil layer: cut all TC4 foil layers with a thickness of ...

Embodiment 3

[0047] Embodiment 3: Ti-Ti of a kind of cylindrical staggered stacking structure 2 AlC / TiAl 3 A method for preparing a laminated composite material, comprising the steps of:

[0048] , Preparation of uniformly mixed composite powder: Aluminum powder with an average particle size of less than 30 μm and a purity of 99.9% and Ti with an average particle size of less than 70 μm and a purity of 98% 2 AlC powder is put into a ball mill with a molar ratio of 10:1 for ball milling. Set the ball milling ratio to 10:1, the speed to 300r / min, and the ball milling time to be more than 8 hours. Add alcohol as a ball milling aid during the milling process, and the milling is completed. Then put the ball mill into the drying machine to dry for 2 hours, and finally use the Retsch AS200 mechanical vibrating sieve to sieve the dried composite powder. The particle size of the composite powder after sieving is 350 mesh;

[0049] 1. Prepare TC4 foil layer: cut all TC4 foil layers with a thic...

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Abstract

The invention belongs to the technical field of armor protection, particularly discloses a Ti-Ti2AlC / TiAl3 laminated composite material with a cylindrical alternately-stacked structure and a preparation method thereof and solves the problems in the background art. The laminated composite material comprises TC4 foil material layers and composite powder layers which are stacked at intervals; the composite powder layers are composed of aluminum powder and Ti2AlC powder; the molar ratio of the aluminum powder to the Ti2AlC powder is (5 to 1)-(20 to 1); a plurality of cylindrical through holes are formed in a TC4 foil material layer between two composite powder layers; and the cylindrical through holes in two adjacent TC4 foil material layers are alternately arranged. A Ti-TiAl3 laminated composite material is reinforced by Ti2AlC, so that the micro area thickness, the fracture toughness and the compression performance of the Ti-TiAl3 laminated composite material can be obviously improved; the cylindrical alternately-stacked structure facilitates release of residual stress during preparation; the layers are more closely connected; and the toughness and the energy absorption performance of composite boards can also be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of armor protection, and relates to armor preparation materials, in particular a Ti-Ti with a cylindrical staggered stacking structure 2 AlC / TiAl 3 Laminated composite material and method for its preparation. Background technique [0002] In recent years, researchers have developed new intermetallic compound laminated composites through the study of the microstructure and toughening mechanism of natural biomaterial shells. Among them, the Ti-Al intermetallic compound laminated composite material has been widely used in the fields of electronic device industry, aerospace, armor protection system and so on because of its high specific strength, high specific stiffness, high specific modulus, high energy absorption and other excellent properties. applications, such as commonly used Ti-TiAl 3 laminated composite materials. But Ti-TiAl 3 (The density is about 3.26g / cm 3 , Vickers hardness is about 5.5GPa) l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F7/04B22F3/14B22F3/23
CPCB22F3/14B22F3/23B22F7/04
Inventor 原梅妮姚宇航韩方洲魏泽源郑丽荣
Owner ZHONGBEI UNIV
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