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High-entropy alloy particle reinforced metal matrix composite material and preparation method thereof

A technology of high-entropy alloys and composite materials, applied in the field of high-entropy alloy particle-reinforced metal-matrix composite materials and its preparation, can solve problems such as the formation of stable and effective metallurgical interfaces by difficult metal particles, and achieve excellent interface bonding strength, high-entropy alloy particles Uniform reinforcement distribution and improved production efficiency

Active Publication Date: 2020-09-18
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, silicon carbide particles, boron nitride particles, etc. are often used as reinforcements for particle-reinforced metal matrix composites. Most of them are non-metallic particles, and it is difficult to form a stable and effective metallurgical interface with metal particles.

Method used

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  • High-entropy alloy particle reinforced metal matrix composite material and preparation method thereof
  • High-entropy alloy particle reinforced metal matrix composite material and preparation method thereof
  • High-entropy alloy particle reinforced metal matrix composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The high-entropy alloy particle 1 is made of AlCoNiCrFe, and the metal plate 2 is made of 5052Al to prepare a sandwich-structured high-entropy alloy particle-reinforced metal matrix composite. figure 1 It is the evolution diagram and process flow diagram of the preparation of the imitation sandwich structure high-entropy alloy particle reinforced aluminum matrix composite material of the present invention.

[0045] First, cut the aluminum plate with a length, width, and thickness of 400×100×1.5mm into two pieces with an equal size of 200×100×1.5mm, and treat the surface. Use acetone to clean the oil on the surface of the aluminum plate, and clean the surface of the material after cleaning with acetone. Soak in lye for 30 minutes, choose 2% NaOH solution for lye, rinse with deionized water and dry, and finally clean the surface with a wire brush to expose fresh metal on the surface. Then, the AlCoNiCrFe high-entropy alloy particle powder with a particle size of 38-75 μm ...

Embodiment 2

[0048] The high-entropy alloy particle 1 is made of AlCoNiCrFe, and the metal plate 2 is made of 5052Al to prepare a sandwich-structured high-entropy alloy particle-reinforced metal matrix composite.

[0049] This embodiment is similar to Embodiment 1, except that during surface treatment, the metal plate 2 is soaked in a NaOH solution with a concentration of 2% for 20 minutes, the number of rolling passes is 10, and the rolling temperature is 320°C. , the heat treatment temperature is 530 ℃, the holding time is 6h, and the imitation sandwich structure high-entropy alloy particle reinforced aluminum matrix composite is prepared.

Embodiment 3

[0051] The high-entropy alloy particle 1 is made of AlCoNiCrFe, and the metal plate 2 is made of 5052Al to prepare a sandwich-structured high-entropy alloy particle-reinforced metal matrix composite.

[0052] This embodiment is similar to Embodiment 1, except that during surface treatment, the metal plate 2 is soaked in a NaOH solution with a concentration of 2% for 20 minutes, the number of rolling passes is 10, and the rolling temperature is 20°C. , the heat treatment temperature is 530 ℃, the holding time is 6h, and the imitation sandwich structure high-entropy alloy particle reinforced aluminum matrix composite is prepared.

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Abstract

The invention discloses a high-entropy alloy particle reinforced metal matrix composite material and a preparation method thereof. The method comprises the following steps of 1, taking two metal plates with the same size, uniformly coating high-entropy alloy particles on the surface of the metal plates, and then sequentially stacking, riveting and rolling the two metal plates to form a composite plate; 2, carrying out accumulative stitch welding on the composite plate, and cutting, stacking and riveting each time of the accumulative roll bonding until the thickness of a lamination reaches therequired thickness to form a composite material; and 3, carrying out heat treatment on the composite material after accumulative roll bonding, so that a diffusion layer is formed between the high-entropy alloy particles and the metal plates, and the high-entropy alloy particle reinforced metal matrix composite material is obtained. The high-entropy alloy particle reinforced metal matrix compositematerial with improved strength and good plastic toughness is obtained.

Description

technical field [0001] The invention belongs to the field of metal-matrix composite materials, and relates to a high-entropy alloy particle-reinforced metal-matrix composite material and a preparation method thereof. Background technique [0002] Particle-reinforced metal matrix composites are heterogeneous mixtures of metals and their alloys as the matrix, and metal or non-metallic particles as the reinforcing phase. The key to achieving excellent performance of composite materials lies in whether the interface between the matrix phase and the reinforcing phase produces a good interface bond. At present, silicon carbide particles, boron nitride particles, etc. are often used as reinforcements for particle-reinforced metal matrix composites. Most of them are non-metallic particles, and it is difficult to form a stable and effective metallurgical interface with metal particles. In recent years, metal-based reinforcements have been developed, such as magnesium-based, iron-bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/38B21B47/00B21B45/02C21D1/00C21D9/00
CPCB21B1/38B21B45/0269B21B47/00B21B2001/383B21B2001/386C21D1/00C21D9/0081
Inventor 袁战伟刘欢田文斌张学敏
Owner CHANGAN UNIV
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