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Mixed phase reinforced zirconium-based amorphous composite material and preparation method thereof

A technology for zirconium-based amorphous alloys and composite materials, which is applied in the field of hybrid phase-reinforced zirconium-based amorphous composite materials and its preparation, can solve the problems of large size, uneven distribution, low alloy plasticity, etc., and achieve high repetition rate, gas And the effect of less volatile impurities and promoting uniform precipitation

Inactive Publication Date: 2021-08-31
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the defects of the prior art, the purpose of the present invention is to provide a hybrid phase reinforced zirconium-based amorphous composite material, aiming to solve the problems caused by the uneven distribution and coarse size of the B2-CuZr phase in the existing ZrCu-based amorphous alloys. The problem of low plasticity

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  • Mixed phase reinforced zirconium-based amorphous composite material and preparation method thereof
  • Mixed phase reinforced zirconium-based amorphous composite material and preparation method thereof
  • Mixed phase reinforced zirconium-based amorphous composite material and preparation method thereof

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preparation example Construction

[0036] The present invention also provides a method for preparing a hybrid-phase reinforced zirconium-based amorphous composite material, which includes the following steps:

[0037] S1, according to the atomic fraction (Zr a Cu b Al c ) d Ta e Mix raw materials Zr, Cu, Al, Ta block, where a, b, c, d, e are atomic percentages, 0.46≤a=b≤0.475, 0.05≤c≤0.08; 92≤d<100, 0

[0038] In some embodiments, the raw materials Zr, Cu, Al, and Ta blocks are mechanically polished in advance to remove oxide scales to ensure the high purity of each raw material metal block. Specifically, the purity of the Zr, Cu, Al, and Ta raw materials is uniform. Greater than 99.5%.

[0039] S2. Using a vacuum electric arc furnace, the alloy raw materials are arc smelted to obtain a Zr-Ta master alloy and a Zr-Cu-Al-Ta master alloy. Specifically, the Zr block and Ta block configured according to the atomic percentage are placed in the water-cooled copper mold of the electr...

Embodiment 1

[0049] What this embodiment prepares is Zr 46 Cu 46 Al 8 The matrix alloy specifically comprises the following steps:

[0050] (1) Carry out mechanical grinding to the alloy raw material, remove scale, Zr 46 Cu 46 Al 8 The atomic percentage of the base alloy is converted into a mass percentage, and the corresponding Zr block, Cu block and Al block are weighed and configured according to a total mass of about 30 g.

[0051] (2) Put the configured Zr block, Cu block and Al block into the water-cooled copper mold of the vacuum melting furnace, and vacuum the furnace body to 3.0×10 -3 Pa, pass in argon gas with a purity of 99.999% to a relative pressure of -0.05 MPa, conduct arc melting on the raw materials, keep the melting temperature at 1000 ° C ~ 2000 ° C, and stop melting after fully melting for 3 minutes, and use the turning rod to smelt the alloy Turn the ingot over and repeat the smelting for a total of 4 times to obtain Zr 46 Cu 46 Al 8 master alloy.

[0052] (3...

Embodiment 2

[0055] What this embodiment prepares is (Zr 0.46 Cu 0.46 Al 0.08 ) 95 Ta 5 Composite materials specifically include the following steps:

[0056] (1) Carry out mechanical grinding to the alloy raw material, remove scale, and (Zr 0.46 Cu 0.46 Al 0.08 ) 95 Ta 5 The atomic percentage of the alloy is converted into a mass percentage, and the corresponding Zr block, Cu block, Al block and Ta block are prepared by weighing according to a total mass of about 30 g.

[0057](2) Put the configured Zr block and Ta block into the water-cooled copper mold of the vacuum melting furnace, and vacuum the furnace body to 3.0×10 -3 Pa, pass in argon gas with a purity of 99.999% to a relative pressure of -0.05 MPa, conduct arc melting on the raw materials, keep the melting temperature at 3000 ° C ~ 3500 ° C, and stop the melting after fully melting for 3 minutes. Turn the ingot over and repeat the smelting for a total of 4 times to obtain the Zr-Ta master alloy;

[0058] Put the Zr-Ta ...

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Abstract

The invention belongs to the technical field of amorphous alloy composite materials, and particularly discloses a mixed phase reinforced zirconium-based amorphous composite material and a preparation method thereof. The composition expression of the composite material is (ZrCuAl<c>)<d>Ta<e>, a = b is larger than or equal to 0.46 and smaller than or equal to 0.475, c is larger than or equal to 0.05 and smaller than or equal to 0.08, and a + b + c is equal to 1; d and e are atomic percent, d is larger than or equal to 92 and smaller than 100, e is larger than 0 and smaller than or equal to 8, and d + e is equal to 100; and a matrix of the composite material is zirconium-based amorphous alloy, a reinforcing phase is a mixed phase of a core-shell structure, a Ta-rich phase is the core of the mixed phase, and a B2-CuZr phase and a B19 '-CuZr phase are the shell of the mixed phase. According to the mixed phase reinforced zirconium-based amorphous composite material and the preparation method thereof, the size of the B2-CuZr phase in the zirconium-based amorphous composite material is successfully refined, uniform distribution of the B2-CuZr phase is achieved, meanwhile, a core-shell mixed complex composite structure is introduced, the room-temperature comprehensive mechanical property of the zirconium-based amorphous composite material is further improved, and the application prospect of zirconium-based amorphous materials is expanded.

Description

technical field [0001] The invention belongs to the technical field of amorphous alloy composite materials, and more specifically relates to a hybrid-phase reinforced zirconium-based amorphous composite material and a preparation method thereof. Background technique [0002] Different from traditional crystalline alloys, the amorphous alloy obtained by rapid cooling retains the characteristics of short-range order and long-range disorder of the atomic arrangement inside the liquid metal. There are no defects such as grain boundaries and dislocations in the amorphous alloy, showing excellent performance. Because of the high strength, high hardness, and large elastic limit of crystalline alloys. At present, although a series of amorphous alloys such as Zr-based, Al-based, Mg-based, Ti-based, and Fe-based have been obtained in research and development, most amorphous alloys show brittle fracture characteristics at room temperature, which is not conducive to their practical appl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/10C22C1/03C22B9/04C22B4/06B22D21/02
CPCC22C45/10C22C1/03C22B9/04C22B9/006C22B4/06B22D21/022C22C2200/02C22C1/11
Inventor 郭威邵雨曼赵觅吕书林吴树森
Owner HUAZHONG UNIV OF SCI & TECH
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