High-strength high-plasticity Cu-Zr-Zn amorphous composite and preparation method

An amorphous composite material, cu-zr-zn technology, applied in the field of amorphous composite materials and preparation, can solve the problem that the thermal stability of the B2CuZr phase will not be significantly improved and deteriorated, and achieve good plasticity and overcome low plasticity. Effect

Inactive Publication Date: 2016-03-16
SHANDONG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, although the addition of trace amounts of Ag, Al, Ti, Hf and Ra (rare earth elements) can improve the G...

Method used

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  • High-strength high-plasticity Cu-Zr-Zn amorphous composite and preparation method
  • High-strength high-plasticity Cu-Zr-Zn amorphous composite and preparation method
  • High-strength high-plasticity Cu-Zr-Zn amorphous composite and preparation method

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Experimental program
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Effect test

Embodiment 1

[0028] Step 1: Preparation of Cu 47.25 Zr 47.25 Zn 4.5 For a sample of 5g, weigh 1.9744g of pure Cu and 2.8342g of pure Zr, and put them in a polished water-cooled crucible with a good ratio;

[0029] Step 2: Evacuate the electric arc furnace to a vacuum of 5×10 -5 Pa, and then backfill Ar gas with a purity of 99.999% to one atmospheric pressure;

[0030] Step 3: Turn on the electric arc furnace and heat up to the melting point of the alloy prepared in step 1. After the alloy ingot is cooled, turn the alloy ingot over and melt it again. Repeat 3 times to mix the alloy evenly to obtain Cu 50 Zr 50 master alloy;

[0031] Step 4: Remove the surface scale of the master alloy and crush it, weigh 0.1914g of pure Zn, and mix it;

[0032] Step 5: Put it into the quartz test tube in the high-vacuum high-frequency induction melting-blow casting furnace;

[0033] Step 6: Evacuate the high-vacuum high-frequency induction melting-blow casting furnace to a vacuum of 5×10 -5 Pa, and ...

Embodiment 2

[0037] Step 1: Preparation of Cu 47.25 Zr 47.25 Zn 4.5 For a sample of 5g, weigh 1.9744g of pure Cu and 2.8342g of pure Zr, and put them in a polished water-cooled crucible with a good ratio;

[0038] Step 2: Evacuate the electric arc furnace to a vacuum of 5×10 -5 Pa, and then backfill Ar gas with a purity of 99.999% to one atmospheric pressure;

[0039] Step 3: Turn on the electric arc furnace and heat up to the melting point of the alloy prepared in step 1. After the alloy ingot is cooled, turn the alloy ingot over and melt it again. Repeat 4 times to mix the alloy evenly to obtain Cu 50 Zr 50 master alloy;

[0040] Step 4: Remove the surface scale of the master alloy and crush it, weigh 0.1914g of pure Zn, and mix it;

[0041] Step 5: Put it into the quartz test tube in the high-vacuum high-frequency induction melting-blow casting furnace;

[0042] Step 6: Evacuate the high-vacuum high-frequency induction melting-blow casting furnace to a vacuum of 5×10 -5Pa, and t...

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PUM

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Abstract

The invention relates to a high-strength high-plasticity Cu-Zr-Zn amorphous composite and a preparation method. The atomic feature ratio of the high-strength high-plasticity Cu-Zr-Zn amorphous composite is Cu47.25Zr47.25Zn4.5. The Cu47.25Zr47.25Zn4.5 amorphous composite prepared through a rapid solidification method not only has the excellent amorphous mechanical property, such as the high breaking strength (1713+/-75 MPa), the large elastic limit (2.0+/-0.1%) and the like, but also the brittleness caused by shear zone high localization, the low plasticity caused by strain softening and other defects are overcome. In the deformation process at the room temperature, the amorphous composite has the good plasticity (6.8+/-0.8%), and furthermore the hardening capacity of micro processing is showed.

Description

technical field [0001] The invention belongs to an amorphous composite material and a preparation method thereof, in particular to a preparation method of a high-strength and high-plasticity Cu-Zr-Zn amorphous composite material. Background technique [0002] CuZr-based metallic glasses are ideal materials for structural and functional applications due to their large elastic limit, high strength, and excellent corrosion resistance. The microstructure, glass forming ability (GFA), crystallization behavior and mechanical properties of CuZr-based metallic glasses have been extensively studied. For example, when CuZr alloys are doped with Ag, Al, Ti, Hf and Ra (rare earth elements), CuZr-based bulk metallic glasses (BMGs) with good properties can be easily prepared. However, these monoclinic BMGs with disordered structures often exhibit obvious brittle fractures under compressive loading due to the highly localized shear bands. [0003] In order to solve the room temperature b...

Claims

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Application Information

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IPC IPC(8): C22C45/10C22C1/03
CPCC22C45/10C22C1/11
Inventor 宋凯凯吴点宇曹崇德白晓军
Owner SHANDONG UNIV
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