High-strength bulk cu‑zr‑zn metallic glass and preparation method thereof

A kind of metallic glass, high-strength technology, applied in the field of high-strength bulk Cu-Zr-Zn metallic glass and its preparation

Inactive Publication Date: 2017-04-26
NORTHWESTERN POLYTECHNICAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to avoid the deficiencies of the prior art, the present invention proposes a high-strength bulk Cu-Zr-Zn metallic glass and its preparation method, which solves the problem that Zn has high volatility during smelting and needs to constantly adjust the composition ratio and find the ideal casting parameter problem

Method used

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  • High-strength bulk cu‑zr‑zn metallic glass and preparation method thereof
  • High-strength bulk cu‑zr‑zn metallic glass and preparation method thereof
  • High-strength bulk cu‑zr‑zn metallic glass and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Step 1: Preparation of Cu 43 Zr 43 Zn 14 For a sample of 5g, weigh 1.8047g of pure Cu and 2.5907g of pure Zr, and put them in a well-polished water-cooled crucible;

[0027] 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;

[0028] Step 3: Turn on the electric arc furnace and heat up to the melting point of the alloy prepared in step 1, turn the alloy ingot over, re-melt, repeat 3 times to mix the alloy evenly to obtain Cu 50 Zr 50 master alloy;

[0029] Step 4: Remove the surface scale of the master alloy and crush it, weigh 0.6046g of pure Zn, and mix it;

[0030] Step 5: Put it into the quartz test tube in the high-vacuum high-frequency induction melting-blow casting furnace;

[0031] Step 6: Evacuate the high-vacuum high-frequency induction melting-blow casting furnace to a vacuum of 5×10 -5 Pa, and then backfill Ar gas with a purity of 99.999% to one atmospher...

Embodiment 2

[0035] Step 1: Preparation of Cu 43 Zr 43 Zn 14 For a sample of 5g, weigh 1.8047g of pure Cu and 2.5907g of pure Zr, and put them in a well-polished water-cooled crucible;

[0036] 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;

[0037] Step 3: Turn on the electric arc furnace and heat up to the melting point of the alloy prepared in step 1, turn the alloy ingot over, re-melt, repeat 4 times to mix the alloy evenly to obtain Cu 50 Zr 50 master alloy;

[0038] Step 4: Remove the surface scale of the master alloy and crush it, weigh 0.6046g of pure Zn, and mix it;

[0039] Step 5: Put it into the quartz test tube in the high-vacuum high-frequency induction melting-blow casting furnace;

[0040] Step 6: Evacuate the high-vacuum high-frequency induction melting-blow casting furnace to a vacuum of 5×10 -5 Pa, and then backfill Ar gas with a purity of 99.999% to one atmospher...

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Abstract

The invention relates to a high-strength bulk Cu-Zr-Zn metallic glass and a preparation method thereof. The atomic characteristic ratio of the Cu-Zr-Zn metallic glass is Cu43Zr43Zn14, and the Cu43Zr43Zn14 metallic glass prepared by adopting a rapid solidification preparation method has a high Yield strength (1815±10MPa), breaking strength (1840MPa±10MPa), large elastic limit and plastic strain (0.1±0.02).

Description

technical field [0001] The invention belongs to metallic glass and a preparation method, in particular to a high-strength bulk Cu-Zr-Zn metallic glass and a preparation method. Background technique [0002] Metalliic Glass (MG), also known as Amorphous Alloy, is a type of solid material obtained by continuous and rapid cooling of alloy melts and has the properties of metal and glass. Bulk metallic glass (Bulk Metalliic Glass, BMG) usually refers to metallic glass with three-dimensional dimensions above millimeters. [0003] The atomic structure of amorphous alloys has the characteristics of long-range disorder and short-range order, and does not have defects such as dislocations in traditional crystal materials. This makes it exhibit many excellent mechanical properties, such as ultra-high strength and fracture toughness, high hardness, low elastic modulus, unique deformation and fracture behavior, etc. Bulk metallic glasses are the strongest, hardest, softest and toughest...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/10C22C1/03
CPCC22C45/10C22C1/11
Inventor 曹崇德吴点宇宋凯凯白晓军
Owner NORTHWESTERN POLYTECHNICAL UNIV
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