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Nickel-free zirconium alloy with amorphous structure easily formed by pouring melt copper mould

A technology of amorphous and zirconium alloys, applied in the field of amorphous alloys

Active Publication Date: 2013-06-05
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

[0007] However, the zirconium alloys that have been found to form an amorphous state generally contain toxic elements such as nickel and beryllium to ensure the ability of the alloy to form an amorphous state.

Method used

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  • Nickel-free zirconium alloy with amorphous structure easily formed by pouring melt copper mould
  • Nickel-free zirconium alloy with amorphous structure easily formed by pouring melt copper mould
  • Nickel-free zirconium alloy with amorphous structure easily formed by pouring melt copper mould

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: Casting Zr 60.9 Ti 2.1 Cu 25 Al 12 Alloy rods (nominal composition is atomic percentage, the same below)

[0039] Using commercially available pure metal Zr, Ti, Cu, Al elements such as rods, blocks, ingots, plates and other bulk materials (purity higher than 99.5%, weight percentage) as the starting material, arc in a titanium-purified argon atmosphere Smelted into quaternary master alloy ingots. The master alloy ingot needs to be smelted several times to ensure the uniformity of the composition. Take 55 grams of master alloy material and place it in a water-cooled copper crucible, heat it in an electric arc furnace to above the melting point, turn over the water-cooled copper crucible after melting, and pour the melt into a copper mold. The geometric shape of the inner cavity of the copper mold is φ10mm×110mm (different diameters and lengths or other geometric shapes can be selected according to needs). After the melt is cooled, a round rod with a dia...

Embodiment 2

[0040] Example 2: Casting Zr 61.6 Ti 4.4 Cu 24 Al 10 Alloy bar

[0041] Using commercially available pure metal Zr, Ti, Cu, Al elements such as rods, blocks, ingots, plates and other bulk materials (purity higher than 99.5%, weight percentage) as the starting material, arc in a titanium-purified argon atmosphere Smelted into quaternary master alloy ingots. The master alloy ingot needs to be smelted several times to ensure the uniformity of the composition. Take 40 grams of master alloy material and place it in a water-cooled copper crucible, heat it in an electric arc furnace to above the melting point, turn over the water-cooled copper crucible after melting, and pour the melt into a copper mold. The geometric shape of the inner cavity of the copper mold is φ8mm×110mm (different diameters and lengths or other geometric shapes can be selected according to needs). After the melt is cooled, a round rod with a diameter of 8 mm and a length of 70 mm is formed. The cross-sec...

Embodiment 3

[0042] Example 3: Casting Zr 58.46 Ti 2.02 f 2.52 Cu 25 Al 12 Alloy bar

[0043] Commercially available pure metal Zr, Ti, Cu, Al, Hf elements such as rods, blocks, ingots, plates and other bulk materials (purity higher than 99.5% by weight) are used as starting materials, in an argon atmosphere purified by titanium The lower electric arc is smelted into a five-element master alloy ingot. The master alloy ingot needs to be smelted several times to ensure the uniformity of the composition. Take 55 grams of master alloy material and place it in a water-cooled copper crucible, heat it in an electric arc furnace to above the melting point, turn over the water-cooled copper crucible after melting, and pour the melt into a copper mold. The geometric shape of the inner cavity of the copper mold is φ10mm×110mm (different diameters and lengths or other geometric shapes can be selected according to needs). After the melt is cooled, a round rod with a diameter of 10 mm and a lengt...

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Abstract

The invention relates to a nickel-free zirconium alloy with an amorphous structure easily formed by pouring a melt copper mould. The alloy comprises four components, namely, Zr, Ti, Cu and Al, wherein the atom percentages of the four components in the whole alloy are respectively a, b, c and d, and a is 45-69%, b is 0.25-8%, c is 21-35%, d is 7.5-15%, and the sum of a, b, c and d is less than or equal to 100%. The alloy melt is poured to an inner cavity of a copper mould, and then a bulk material or part with the amorphous structure is formed. The amorphous zirconium alloy provided by the invention has the characteristics of high breakage strength, high tenacity, low elastic modulus and corrosion resistance.

Description

technical field [0001] The invention relates to an amorphous alloy (or metallic glass), and in particular provides a nickel-free zirconium alloy which is easy to form an amorphous structure by molten copper mold casting. Background technique [0002] Compared with ordinary polycrystalline metal materials, the main structural feature of amorphous alloys (also known as metallic glasses) is that the atomic arrangement has no long-term order and no grain boundaries. Therefore, it has excellent properties such as high strength, corrosion resistance, and isotropy. It has broad application prospects in the fields of micromachines, microelectronics, sporting goods, precision instruments, anti-theft equipment, and medical materials. In contrast, ordinary metals and alloys undergo a crystalline transition when cooled from a liquid state, solidifying to form a material with a polycrystalline structure. Amorphous alloys are usually cooled by cooling the alloy melt below its glass tran...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/10
Inventor 贺强徐坚
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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