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Gradient aluminum-based composite material for resisting 30 mm armor-piercing bullet and preparation method of gradient aluminum-based composite material

An aluminum-based composite material and composite material technology are applied in the field of anti-30mm armor-piercing projectile gradient aluminum-based composite materials and their preparation, which can solve the problems of poor resistance to multiple elastics and large thickness, and achieve reduced strength, low areal density, and target reduction. Effects of plate damage

Active Publication Date: 2021-08-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of traditional ceramic composite armor structure surface density, large thickness and poor anti-multiple elastic performance

Method used

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  • Gradient aluminum-based composite material for resisting 30 mm armor-piercing bullet and preparation method of gradient aluminum-based composite material
  • Gradient aluminum-based composite material for resisting 30 mm armor-piercing bullet and preparation method of gradient aluminum-based composite material
  • Gradient aluminum-based composite material for resisting 30 mm armor-piercing bullet and preparation method of gradient aluminum-based composite material

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Experimental program
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Effect test

specific Embodiment approach 1

[0018] Specific implementation mode 1: In this implementation mode, a kind of anti-30mm armor-piercing projectile gradient aluminum matrix composite material has a three-layer gradient structure; the outer layer is densely packed ceramic cylinders, ceramic spheres and B 4 C is an aluminum-based composite material reinforced by ceramic powders, the ceramic spheres are filled in the column gaps of closely packed ceramic cylinders, and the overall volume fraction of ceramic phases in the outer layer is greater than 90%; the middle layer is a high volume fraction B 4 C / Al composite material, in which the volume fraction of the ceramic phase is 60-75%; the inner layer is a medium volume fraction of B 4 The C / Al composite material, wherein the volume fraction of the ceramic phase is 25-55%; the gradient aluminum-based composite material resistant to 30mm armor-piercing projectile is prepared by pressure infiltration and integrated, and has a metallurgical bonding interface.

[0019...

specific Embodiment approach 2

[0020] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the material of the ceramic cylinder and the ceramic sphere is B 4 C or SiC, and the ceramic cylinder and ceramic sphere are made of the same material. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0021] Specific embodiment 3: This embodiment differs from specific embodiment 1 or 2 in that: the ceramic cylinder is a regular cylinder or a cylinder with a curved end; the height is 15-20mm, and the length-to-diameter ratio is 0.5- 1.5. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a gradient aluminum-based composite material for resisting a 30 mm armor-piercing bullet and a preparation method of the gradient aluminum-based composite material, and aims to solve the problems that a traditional ceramic composite armor structure is large in surface density and thickness and poor in frequent elasticity resistance are solved. The gradient aluminum-based composite material is of a three-layer gradient structure; the outer layer is made of an aluminum-based composite material which is reinforced by ceramic columns, ceramic balls and B4C ceramic powder which are densely arranged together; the middle layer is a high-volume-fraction B4C / Al composite material; and the inner layer is a medium-volume-fraction B4C / Al composite material. The method comprises the following steps: 1, densely arranging the ceramic columns; 2, filling gaps of the columns with the ceramic balls; 3, filling gaps with the B4C powder; 4, paving preform powder layer by layer; 5, carrying out compacting and cold-pressing to prepare a preform; and 6, melting molten aluminum, pressing the molten aluminum into the remaining gaps of the preform through pressure infiltration, and conducting pressure maintaining and demolding. Thea gradient aluminum-based composite material is used for the armor structure for resisting the 30 mm armor-piercing bullet.

Description

technical field [0001] The invention relates to a gradient aluminum-based composite material resistant to 30mm armor-piercing bullets and a preparation method thereof. Background technique [0002] With the development of science and technology, the power of anti-armor weapons is increasing day by day, and the requirements for armor protection are getting higher and higher. Improving the protective effect simply by thickening the armor protection layer is bound to seriously affect the combat mobility and rapid response capabilities of the weapon system. The application of ceramics in the field of armor is a revolution in tank protection technology. The ceramic composite armor structure has also become the mainstream lightweight armor structure in the world. The representative one is the "Chobham Armor" developed by the United Kingdom. Its structure is roughly The sandwich structure of "steel / ceramic / steel". However, the protective mechanism of its structure is as follows: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C32/00C22F1/04B22D23/04F41H5/04F41H7/04
CPCC22C32/0052C22C21/00B22D23/04C22F1/04F41H5/0421F41H7/04
Inventor 晁振龙姜龙涛张润伟杜善琦陈国钦武高辉
Owner HARBIN INST OF TECH
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