Ti-based amorphous alloy with super-large amorphous forming ability and preparation method thereof

An amorphous alloy and amorphous technology, applied in the field of amorphous alloy materials, can solve the problems of insufficient formation ability of Ti-based amorphous alloys, and achieve the effect of improving the ability of amorphous formation

Active Publication Date: 2019-01-22
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a kind of Ti-Zr-Be-Ni-Cu(Fe) alloy and preparation method thereof with super large amorphous forming ability, which is used to solve the problem of insufficient forming ability of Ti-based amorphous alloy in the prior art , to develop a titanium-based amorphous alloy system with greater amorphous forming ability

Method used

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  • Ti-based amorphous alloy with super-large amorphous forming ability and preparation method thereof
  • Ti-based amorphous alloy with super-large amorphous forming ability and preparation method thereof
  • Ti-based amorphous alloy with super-large amorphous forming ability and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Preparation (Ti 41 Zr 25 be 26 Ni 8 ) 100-x Cu x (x=2, 4, 6, 8, 10, 12 at.%) bulk amorphous alloys.

[0024] The first step is to select high-purity titanium block (99.99% purity), zirconium rod (99.7% purity), beryllium block (99.9% purity), nickel particle (99.99% purity), iron block (99.99% purity ) or a copper block (purity is 99.999%), after polishing the oxide skin on the surface of the above-mentioned metal raw material, carry out ultrasonic cleaning with acetone. According to alloy composition (Ti 41 Zr 25 be 26 Ni 8 ) 100- x Cu x Atomic percentages (x=2, 4, 6, 8, 10, 12 at.%) were converted into mass percentages, and the above alloy raw materials were measured and prepared using a balance with an accuracy of 0.0001 g.

[0025] In the second step, after mixing the above-mentioned alloy raw materials, they were respectively placed in the electric arc furnace, and the chamber was evacuated to 1×10 - 3 After Pa, the high-purity argon gas is introduce...

Embodiment 2

[0029] Preparation of large size (Ti 41 Zr 25 be 26 Ni 8 ) 100-x Cu x (x=6, 7, 8 at.%) bulk amorphous alloys.

[0030]In the first step, after calculating and analyzing the variation law of the liquid-solid transition free energy difference ΔG of the above-mentioned amorphous alloy with temperature, combined with the thermodynamic data analysis (Trg, ΔT, γ) of the above-mentioned amorphous alloy and the average atomic radius difference, Changes of electronegativity difference, mixing enthalpy, and mixing entropy with the content of Cu elements. It is found that when 6≤Cu≤8, the alloy may have a great ability to form amorphous, and when the Cu content is 7at%, the amorphous The ability to form is maximum. Therefore, respectively designed and trial-manufactured (Ti 41 Zr 25 be 26 Ni 8 ) 94 Cu 6 , (Ti 41 Zr 25 be 26 Ni 8 ) 93 Cu 7 , (Ti 41 Zr 25 be 26 Ni 8 ) 92 Cu 8 Bulk alloy rod samples.

[0031] The second step: according to the content of each compone...

Embodiment 3

[0036] Preparation (Ti 55 Zr 15 be 20 Ni 10 ) 100-x Fe x (x=2, 4, 6, 8, 10 at.%) bulk amorphous alloy.

[0037] The first step is to select high-purity titanium block (99.99% purity), zirconium rod (99.7% purity), beryllium block (99.9% purity), nickel particle (99.99% purity), iron block (99.99% purity ) or a copper block (purity is 99.999%), after polishing the oxide skin on the surface of the above-mentioned metal raw material, carry out ultrasonic cleaning with acetone. According to the design alloy composition (Ti 55 Zr 15 be 20 Ni 10 ) 100-x Fe x (x=2, 4, 6, 8, 10 at.%) The atomic percentages of each alloy composition were converted into mass percentages, and the alloy raw materials of each composition were measured and prepared using a balance with an accuracy of 0.0001 g.

[0038] In the second step, the alloy raw materials with different components were mixed and put into the electric arc furnace respectively, and the chamber was evacuated to 1×10 -3 Afte...

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Abstract

The invention belongs to the technical field of amorphous alloy materials, and relates to a Ti-Zr-Be-Ni-Cu (Fe) amorphous alloy with super-large amorphous forming ability and a preparation method thereof. The Ti-based amorphous alloy has the following composition represented by the following general formula: (TiaZrbBecNid)100-xCux or (TiaZrbBecNid)100-xFex, wherein a, b, c, d, and x are atomic percentages and have the value ranges: 41<=a<=55, 15<=b<=25, 20<=c<=26, 8<=d<=10, 0<x<=12, and the sum of the atomic proportions of all the elements is 100. The preparation method of the Ti-based amorphous alloy comprises the following steps: converting the atomic percentages of the alloy components into the mass percentages, and weighing with highly pure raw materials; pumping an electric arc melting chamber to high vacuum, and preparing an alloy ingot by electric arc melting under argon protection; and melting the obtained alloy ingot, carrying out suction casting, spray casting or pour castingto prepare the amorphous alloy with required shape and size. The maximum critical size of the prepared Ti-based amorphous alloy can reach 52 mm, and the Ti-based amorphous alloy is expected to be applied in the fields of aerospace and aviation.

Description

technical field [0001] The invention belongs to the technical field of amorphous alloy materials, and relates to a Ti-Zr-Be-Ni-Cu(Fe) amorphous alloy with super large amorphous forming ability and a preparation method thereof. Background technique [0002] Amorphous alloys, also known as metallic glasses, have the characteristics of long-range disorder and short-range order in their microscopic atomic arrangement structure. Compared with traditional crystalline alloys, amorphous alloys do not have periodic symmetry of atomic arrangement. This special atomic arrangement structure makes them have a series of unique mechanical, physical and chemical properties. For example, the maximum compressive strength of Co-based amorphous alloys can reach 6GPa, which is the alloy with the highest strength among known metal materials; Fe-based amorphous alloys have achieved large-scale commercial applications due to their excellent soft magnetic properties. Among them, the Ti-based amorph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/10C22C1/02
CPCC22C1/02C22C45/10C22C1/11
Inventor 姚可夫谷佳伦邵洋
Owner TSINGHUA UNIV
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