Preparation method and application of a high-entropy alloy for passive heavy-duty bulletproof armor

Abstract

The invention discloses a preparation method and application of a high-entropy alloy for passive heavy-duty bulletproof armor. Preparation: (1) Powder blending: Mix cobalt, chromium, iron, nickel, and boron elemental powders according to the atomic percentage of high-entropy alloys to obtain mixed powders; (2) Melting: Melt the mixed powders into molten metal; (3) Coating Lubricant: Apply lubricant to the mold in the deposition chamber, and pass inert gas after drying; (4) Deposition: Fill the molten metal into the molten metal bag, pass inert gas to atomize and deposit the molten metal on the In the mold, a CoCrFeNiB high-entropy alloy plate is obtained; (5) homogenization treatment: CoCrFeNiB is placed in a vacuum heating furnace for heat treatment; (6) cryogenic treatment: the homogenized CoCrFeNiB is placed in liquid nitrogen for cryogenic treatment; (7) Cold rolling: cold rolling the CoCrFeNiB after cryogenic treatment to obtain a dense high-entropy alloy. Application: The prepared high-entropy alloy is used as a substrate material in bulletproof materials such as bulletproof inserts, bulletproof helmets, and bulletproof shields, or for manufacturing armor plates.

Description

technical field [0001] The invention relates to the technical field of high-entropy alloys, in particular to a preparation method and application of high-entropy alloys for passive heavy-duty bulletproof armor. Background technique [0002] With the development of modern warfare weapons, combat equipment will suffer more deadly attacks in future operations, and newer and higher requirements will be put forward for protection technology, and passive armor, such as homogeneous armor, composite armor, reactive armor, etc. Composed of combined armor or modular armor, and strive not to be penetrated. In order to improve the protection performance of the bulletproof plate, especially against the destructive effects such as bullet penetration, bomb explosion and fragment killing, it is necessary to develop materials with high protection coefficient and can reduce the armor-piercing kinetic energy of the warhead. The current armor material is aluminum oxide (A1 2 o 3 ) / high perfo...

AI Technical Summary

Problems solved by technology

The current armor material is aluminum oxide (A1 2 o 3 ) / high performance polyethylene fiber, boron carbide (B 4 C) / Aramid composite materials are representative. These composite materials have the characteristics of good elastic resistance, simple production process and obvious weight reduction effect. When the high-speed warhead hits the ceramic plate, the ceramic plate is easy to split into many pieces, resulting in a whole The broken and falling off of the block material increases the non-bulletproof area and causes failure.

The other type is soft bulletproof material, which has simple structure, light weight, and good comfort, but it has poor protection effect on high-speed warheads, cannot be used to protect heavy weapons, and is not suitable for armor materials

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