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A kind of multi-phase dispersed Ti-based amorphous composite material and preparation method thereof

An amorphous composite material and composite material technology, applied in the field of multiphase dispersed Ti-based amorphous composite material, can solve the problems of lack of work hardening ability, low strength of amorphous composite material, inferior fracture toughness, etc., and achieve significant work hardening. ability, reducing density, preventing the effect of linear crack propagation

Active Publication Date: 2022-03-18
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strength of the amorphous composite material is low, and it lacks good work hardening ability, and its fracture toughness is not as good as other systems of amorphous composite materials

Method used

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  • A kind of multi-phase dispersed Ti-based amorphous composite material and preparation method thereof
  • A kind of multi-phase dispersed Ti-based amorphous composite material and preparation method thereof
  • A kind of multi-phase dispersed Ti-based amorphous composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The size is 10×10×100mm 3 Preparation of heterogeneous dispersed amorphous composites:

[0043] (1) Metals with industrial grade or higher purity are used as raw materials, and the atomic percentage is Ti 31.2 Zr 28.7 Ni 5 Cu 8.5 be 21.6 Mo 5 100 g of the prepared alloy was prepared. Among them, Ti, Zr and Mo elements are placed together to form a master alloy①. The master alloy ① is placed in the electric arc furnace, and the vacuum is evacuated to 3×10 -3 Pa, then filled with high-purity argon, first smelt the titanium ingot to absorb oxygen, then smelt the master alloy ①, repeat the smelting at least 4 times until the composition is uniform, and the smelting current is 400A-600A to obtain the master alloy ingot ①;

[0044] (2) Mix the intermediate alloy ingot ① with Ni, Cu, and Be in the alloy composition prepared in step (1), then put it into the electric arc furnace, and evacuate it to 3×10 -3 Pa, and then filled with high-purity argon, first smelt the tit...

Embodiment 2

[0049] The difference from Example 1 is that the size of the amorphous composite material and the holding temperature are different.

[0050] In this example, the size of the designed heterogeneous dispersed amorphous composite material is 15×15×120mm 3 , During the experiment, the size of the flat-mouthed quartz tube was 18-20mm×0.5-0.6mm, and the bandwidth of the amorphous strip prepared by the single copper roll stripping method was 19-20mm. The length and width of the cut amorphous thin strip and pure titanium foil are 120mm and 15mm respectively, and the size is 15×15×120mm prepared by lamination method 3 prefab. After the preform is kept at 900°C for 2-3 minutes, it is water-quenched to obtain a size of 15×15×120mm 3 Multiphase dispersed amorphous composites.

[0051] 900°C heat preservation preparation size is 15×15×120mm 3 XRD and TEM analysis showed that the composite material contained β phase, α phase and amorphous phase, and the volume fractions of β phase, α p...

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Abstract

The invention discloses a multi-phase dispersed Ti-based amorphous composite material and a preparation method thereof. The composite material is a type of multi-phase amorphous alloy-based composite material, wherein the chemical composition of the β phase is Ti 73~74 Zr 13~14 Ni 1~3 Cu 1~3 Mo 10~12 , the volume fraction is 36.1~39.1%; the α phase is pure Ti element, the volume fraction is 7.1~9.1%; the rest is amorphous phase, and its chemical composition is Ti 38~40 Zr 23~ 24 Cu 8~9 Ni 5~6 be 23~25 . During the tensile deformation process of the amorphous composite material, a double strengthening effect occurs. The first layer of strengthening is that the α phase hinders the plastic deformation of the β phase through slip and strengthens the β phase. The second reinforcement is that the α phase and β phase hinder the expansion of the shear band in the amorphous matrix, making the amorphous composite material have good tensile strength and work hardening ability.

Description

technical field [0001] The invention relates to the technical field of multi-phase dispersed Ti-based amorphous composite materials, in particular to a multi-phase dispersed Ti-based amorphous composite material with work hardening ability and high fracture toughness and a preparation method thereof. Background technique [0002] Amorphous alloys have a series of excellent properties such as high strength, high hardness, high elastic limit and corrosion resistance, and have broad application prospects in the fields of industry, medical equipment, aviation and sports equipment. Although amorphous alloys have many excellent properties, they often show brittle fracture at room temperature, which greatly limits the wide application of amorphous alloys. At room temperature, the fracture of amorphous alloys is mainly brittle fracture controlled by a single principal shear band. Therefore, in order to improve the room temperature plasticity of amorphous alloys, the main method at ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/10B22D11/06C22C1/03
CPCC22C45/10C22C1/03B22D11/0611C22C1/11
Inventor 朱正旺林师峰张海峰张龙李正坤张宏伟付华萌李宏王爱民
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI