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Bulk amorphous alloys of Zr-Cu-Al-Be series and preparation method thereof

A zr-cu-al-be, amorphous alloy technology, applied in the field of Zr-Cu-Al-Be bulk amorphous alloy and its preparation, can solve the problem of limited application, small supercooled liquid phase region, superplasticity Problems such as poor processing capacity, to achieve the effect of low price, cost saving, and economical efficiency

Active Publication Date: 2010-11-17
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the supercooled liquid phase region of this system alloy is small (only 48-73K), which makes its superplastic processing ability poor, which seriously limits its application in industrial production.

Method used

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  • Bulk amorphous alloys of Zr-Cu-Al-Be series and preparation method thereof
  • Bulk amorphous alloys of Zr-Cu-Al-Be series and preparation method thereof
  • Bulk amorphous alloys of Zr-Cu-Al-Be series and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: preparation Zr 52 Cu 40 Al 8 bulk amorphous alloy

[0026] Step 1: Purity 99.5wt% Zr, 99.95wt% Cu, 99.7wt% Al according to Zr 52 Cu 40 Al 8 The specified molar ratio is used for batching;

[0027] Step 2: Mix the above-mentioned ingredients and put them into an electric arc furnace, perform arc melting in an argon atmosphere adsorbed by titanium, and cool to obtain a master alloy ingot;

[0028] Step 3: re-melt the master alloy ingot obtained above under the above conditions, and use the suction casting device in the electric arc furnace to suck the master alloy melt into a water-cooled copper mold with an inner diameter of 3mm to obtain Zr 52 Cu 40 Al 8 bulk amorphous alloy.

[0029] The structural characteristics of bulk amorphous alloys were detected by X-ray diffraction (XRD). The XRD results of the alloy are as follows figure 1 shown.

[0030] The alloy was thermodynamically analyzed by differential scanning calorimetry (DSC), and the releva...

Embodiment 2

[0031] Embodiment 2: preparation (Zr 52 Cu 40 al 8 ) 97 be 3 bulk amorphous alloy

[0032] Step 1: the purity is 99.5wt% Zr, 99.95wt% Cu, 99.7wt% Al and 99.0wt% Be according to (Zr 52 Cu 40 al 8 ) 97 be 3 The specified molar ratio is used for batching;

[0033] Step 2: Mix the above-mentioned ingredients and put them into an electric arc furnace, perform arc melting in an argon atmosphere adsorbed by titanium, and cool to obtain a master alloy ingot;

[0034] Step 3: Re-melt the master alloy ingot obtained above under the above conditions, and use the suction casting device in the electric arc furnace to suck the master alloy melt into a water-cooled copper mold with an inner diameter of 6 mm to obtain (Zr 52 Cu 40 al 8 ) 97 be 3 bulk amorphous alloy.

[0035] The structural characteristics of bulk amorphous alloys were detected by X-ray diffraction (XRD). The XRD results of the alloy are as follows image 3 shown.

[0036] The alloy was thermodynamically ana...

Embodiment 3

[0036] The alloy was thermodynamically analyzed by differential scanning calorimetry (DSC), and the relevant thermodynamic parameters were obtained. The DSC curve of the alloy is as Figure 4 The specific thermodynamic parameters are shown in Table 1. Embodiment 3: preparation (Zr 52 Cu 40 al 8 ) 95 be 5 bulk amorphous alloy

[0037] Step 1: the purity is 99.5wt% Zr, 99.95wt% Cu, 99.7wt% Al and 99.0wt% Be according to (Zr 52 Cu 40 al 8 ) 95 be 5 The specified molar ratio is used for batching;

[0038] Step 2: Mix the above-mentioned ingredients and put them into an electric arc furnace, perform arc melting in an argon atmosphere adsorbed by titanium, and cool to obtain a master alloy ingot;

[0039] Step 3: re-melting the master alloy ingot obtained above under the above conditions, using the suction casting device in the electric arc furnace, sucking the master alloy melt into a water-cooled copper mold with an inner diameter of 10mm, and obtaining (Zr 52 Cu 40 ...

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Abstract

The invention relates to bulk amorphous alloys of Zr-Cu-Al-Be series with an extra-wide supercooling liquid phase region. The series of alloys take Zr52Cu40Al8 as basic ingredients, and take the metallic element Be with the minimum atomic radius as the alloying element. The composition of the series of alloy is determined through the following formula: (Zr52Cu40Al8)xBey, wherein x is the molar content of Zr52Cu40Al8, y is the molar content of Be, 80<=x<=100, 0<=y<=20, and x+y=100. The series of alloys can generate bulk amorphous alloys with the critical dimension not less than 3mm, the maximum supercooling liquid phase region reaching 123K and with excellent thermal stability. The series of alloys integrate better glass-forming ability and extra-wide supercooling liquid phase region, and can be widely used in the fields of precise parts, microelectronic components and the like.

Description

technical field [0001] The invention belongs to the field of amorphous alloys or metallic glasses, and in particular relates to a Zr-Cu-Al-Be bulk amorphous alloy and a preparation method thereof Background technique [0002] Amorphous alloys (metallic glasses) are emerging in recent years as promising new-generation metallic materials for structural and functional applications. Due to its special atomic arrangement structure different from that of crystalline alloys, amorphous alloys exhibit ultra-high specific strength, large elastic deformation capacity, low thermal expansion coefficient, ultra-high corrosion resistance and wear resistance that cannot be achieved by traditional crystalline alloys. Excellent performance. These superior properties make amorphous alloys have broad application prospects in many fields. [0003] Despite the above-mentioned excellent properties, the high hardness and room temperature brittleness of amorphous alloys make it difficult to cold w...

Claims

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Application Information

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IPC IPC(8): C22C45/10C22C1/02
CPCC22C45/10C22C1/11
Inventor 刘雄军陈国良惠希东吕昭平陈晓华
Owner UNIV OF SCI & TECH BEIJING
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