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A zirconium-based endogenous phase amorphous composite material and its preparation method

An amorphous composite material and zirconium-based technology, which is applied in the field of zirconium-based endogenous phase amorphous composite material with MoSi2 particles added and its preparation, can solve the problems of volatile, difficult to smelt uniformly bulk materials, etc., and achieve the alloy melting speed. Fast, elimination of heterogeneous nucleation points, high glass-forming ability

Inactive Publication Date: 2014-10-15
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing amorphous alloy materials prepared by the endogenous method have made great progress, but most of the added materials are powdered raw materials (such as boron powder, carbon powder) or bulk materials; powdery materials are very easy to melt during smelting. Volatile, blocky materials are difficult to smelt evenly

Method used

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  • A zirconium-based endogenous phase amorphous composite material and its preparation method
  • A zirconium-based endogenous phase amorphous composite material and its preparation method
  • A zirconium-based endogenous phase amorphous composite material and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Preparation of Zr 55 Cu 30 Ni 5 al 10 Amorphous alloy

[0047] Step 1) Weigh the components of each component. Will Zr 55 Cu 30 Ni 5 al 10 The atomic percentage of the chemical composition is converted into a mass ratio, and it is accurately weighed with a balance.

[0048] Step 2) Preparation of Zr 55 Cu 30 Ni 5 al 10 master alloy. Put the powdered raw material weighed in step 1 into a vacuum mixer and knead for 1 hour, then press the mixed material into a block, put the obtained block into a vacuum melting furnace, and evacuate to 2× 10 -3 Pa, fill with argon protective gas, adjust the air pressure to 0.4-0.5 atmospheres, adjust the current to 50-200 A, repeat the melting for more than 8 times, and cool with the furnace to obtain Zr 50 Cu 30 Ni 5 al 10 master alloy.

[0049] Step 3) Zr 55 Cu 30 Ni 5 al 10 Amorphous alloy rods. Cut an appropriate amount of master alloy according to the size of the bar to be prepared, put it into a vacuum arc su...

Embodiment 2

[0051] Preparation: (Zr 55 Cu 30 Ni 5 al 10 ) 0.99 (MoSi 2 ) 0.01 Amorphous composite material

[0052] Step 1) Weigh the components of each component. Will (Zr 55 Cu 30 Ni 5 al 10 ) 0.99 (MoSi 2 ) 0.01 The atomic percentage and volume fraction of the chemical composition are converted into mass ratios and accurately weighed with a balance.

[0053] Step 2) Preparation of Zr 55 Cu 30 Ni 5 al 10 master alloy. Put the powdered raw material weighed in step 1 into a vacuum mixer and knead for 1 hour, press the mixed material into a block, put the obtained block into a vacuum melting furnace, and evacuate to 2× 10 -3 Pa, filled with argon protective gas, adjusted the air pressure to 0.4-0.5 atmospheres, adjusted the current to 50-200 A, repeated smelting for more than 8 times, and cooled with the furnace to obtain (Zr 55 Cu 30 Ni 5 al 10 ) 0.99 (MoSi 2 ) 0.01 master alloy.

[0054] Step 3) Suction casting (Zr 55 Cu 30 Ni 5 al 10 ) 0.99 (MoSi 2 ) ...

Embodiment 3

[0056] Preparation: (Zr 55 Cu 30 Ni 5 al 10 ) 0.98 (MoSi 2 ) 0.02 Amorphous composite material

[0057] Step 1) Weigh the components of each component. Will (Zr 55 Cu 30 Ni 5 al 10 ) 0.98 (MoSi 2 ) 0.02 The atomic percentage and volume fraction of the chemical composition are converted into mass ratios and accurately weighed with a balance.

[0058] Step 2), 3) are the same as embodiment 2. The stress-strain curve of the sample is shown in Figure 4 .

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Abstract

The invention discloses a zirconium-based endogenous phase amorphous composite material and a preparation method thereof. The composition expression of the zirconium-based amorphous composite material is: (ZraCubNicAld)e(MoSi2)f, wherein a, b, c, and d are Atomic percentage, e, f are volume fractions, a=55, b=30, c=5, d=10; 0.95≤e≤1, 0≤f≤0.05, and a+b+c+d=100, e +f=1. MoSi2 decomposes as an intermediate product into silicon and molybdenum, which react with the amorphous matrix to form a crystalline phase. The material provided by the invention has simple preparation method, uniform dispersion, large size, high hardness, good thermal stability and high compressive strength.

Description

technical field [0001] The present invention relates to a kind of amorphous metal and composite material, especially to a kind of adding MoSi 2 Granular zirconium-based endogenous phase amorphous composite material and method for its preparation. Background technique [0002] Bulk amorphous alloys have a series of excellent physical, mechanical and chemical properties, but their plastic deformation under low temperature (room temperature) and high stress conditions is prone to deformation localization, forming shear bands, and then stretching Catastrophic failure occurs under or shear conditions, making the reliability of bulk amorphous alloy applications difficult to predict. In order to improve and improve the deformation and impact performance of bulk amorphous alloys, in recent years, people have introduced second phases with different strengths and shear moduli into bulk amorphous alloys to improve room temperature plasticity and plasticity of amorphous alloys. Fractu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/10
Inventor 刘龙飞杨俊颜建辉郭源君
Owner HUNAN UNIV OF SCI & TECH