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Die-casting preparation method for network interpenetrating crystalline metal woven mesh toughened amorphous composite material

A technology of amorphous composite materials and metal braided mesh, applied in the field of preparation of amorphous composite materials, can solve problems such as difficulty in forming complex shapes, high cost, and hindering the industrial application of amorphous composite materials

Inactive Publication Date: 2021-09-10
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing processing methods do not well solve the inherent problems of high porosity, high cost, low production efficiency, and difficulty in forming complex shapes of amorphous composites, which hinder the industrial application of amorphous composites.

Method used

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  • Die-casting preparation method for network interpenetrating crystalline metal woven mesh toughened amorphous composite material
  • Die-casting preparation method for network interpenetrating crystalline metal woven mesh toughened amorphous composite material
  • Die-casting preparation method for network interpenetrating crystalline metal woven mesh toughened amorphous composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] see Figure 1 ~ Figure 2 , the present invention provides a method for preparing a high-plasticity amorphous composite material, the method includes but not limited to the following steps S1-S4.

[0048] Step S1: Screening, processing and presetting of metal braided mesh.

[0049] The material of the metal mesh is 304 stainless steel mesh (0Cr18Ni9). The mesh number is 200 mesh, the pore diameter of the braided net is 74 μm, and the wire diameter is 50 μm. After stacking it layer by layer, use an electric welding machine to weld it into a whole that is not easy to disperse, and then use wire cutting to process the metal mesh to the size of the cavity. In this example, the size used is 100mm×10mm×2.5mm. Then use diluted aqua regia to wash away the traces of wire cutting and oxides on the surface, then wash and dry with alcohol, place it inside the cavity of the die-casting mold, and fix it.

[0050] Step S2: Amorphous alloy melting

[0051] Will Zr 41.2 Ti 13.8 Cu ...

Embodiment 2

[0064] Step S1: Screening, processing and presetting of metal braided mesh.

[0065] The material of the metal braided mesh is 304 stainless steel braided mesh. The mesh number is 300 mesh (0Cr18Ni9), the pore diameter of the weaving net is 0.049 mm, and the wire diameter is 40 μm. After stacking it layer by layer, use an electric welding machine to weld it into a whole that is not easy to disperse, and then use wire cutting to process the metal mesh to the size of the cavity. In this example, the size used is 100mm×10mm×2.5mm. Then use diluted aqua regia to wash away the traces of wire cutting and oxides on the surface, then wash and dry with alcohol, place it inside the cavity of the die-casting mold, and fix it.

[0066] Step S2: Amorphous alloy melting

[0067] Will Zr 41.2 Ti 13.8 Cu 12.5 Ni 10 be 22.5 The (atomic ratio) alloy is converted into a mass ratio for batching, and then melted into an ingot in a high vacuum environment to prevent excessive oxygen intake. ...

Embodiment 3

[0074] Step S1: Screening, processing and presetting of metal braided mesh.

[0075] The material of the metal braided mesh is tungsten braided mesh. The mesh number is 100 mesh, the pore diameter of the braided net is 0.15 mm, and the wire diameter is 100 μm. After stacking it layer by layer, use an electric welding machine to weld it into a whole that is not easy to disperse, and then use wire cutting to process the metal mesh to the size of the cavity. In this example, the size used is 100mm×10mm×2.5mm. Then use diluted aqua regia to wash away the traces of wire cutting and oxides on the surface, then wash and dry with alcohol, place it inside the cavity of the die-casting mold, and fix it.

[0076] Step S2: Amorphous alloy melting

[0077] Will Zr 41.2 Ti 13.8 Cu 12.5 Ni 10 be 22.5 The (atomic ratio) alloy is converted into a mass ratio for batching, and then melted into an ingot in a high vacuum environment to prevent excessive oxygen intake. Then, the alloy ingot...

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Abstract

The invention discloses a die-casting preparation method for a network interpenetrating crystalline metal woven mesh toughened amorphous composite material. The material is mainly composed of zirconium-based amorphous and a metal woven net. The preparation method comprises the following steps of screening, processing and presetting a metal framework; smelting amorphous master alloy; carrying out melt die-casting filling; and performing pressure field coupling solidification forming. According to the preparation method, the pre-prepared crystalline metal woven net material is added into the amorphous alloy matrix, in the plastic deformation process, the metal woven net hinders rapid expansion of a single shear band in the amorphous alloy, instability and fracture of the single shear band are prevented, multiple proliferation of the shear band is promoted, and then a large number of shear bands are generated. On the basis of not reducing the compression strength of the original amorphous alloy, the compression plasticity of the material is improved. According to the method, the overall mechanical property of the amorphous composite material is controlled by controlling the material, porosity, thickness and other parameters of the metal woven mesh, and a feasible way is provided for large-scale industrial application of the amorphous composite material.

Description

technical field [0001] The invention relates to the field of preparation of new metal materials, in particular to the preparation of an amorphous composite material with a three-dimensional network interpenetrating structure. Background technique [0002] Amorphous alloy refers to a new type of metal structure material without grains and grain boundaries obtained by cooling the metal melt under ultra-chilling conditions, and the atoms are not arranged in an orderly manner. It is also called "metallic glass" or "liquid state". Metal". Amorphous alloys have the characteristics of high strength, high hardness, high surface finish, and high corrosion resistance. They are considered to be one of the most revolutionary new materials in the 21st century. They are used in military aviation, electronic devices, sports equipment, and biomedicine. The field has bright application prospects. [0003] However, because amorphous alloys have long-range disordered atomic structure charact...

Claims

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Application Information

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IPC IPC(8): C22C47/06C22C47/12C22C49/10C22C49/14B22D17/14C22C45/10
CPCC22C47/066C22C47/12C22C49/10C22C49/14B22D17/14C22C45/10
Inventor 刘乐华张卫文高望峻杨超
Owner SOUTH CHINA UNIV OF TECH
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