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Zirconium-based metallic glass multi-phase composite material and preparation method thereof

A technology of zirconium-based metallic glass and composite material, which is applied in the field of zirconium-based metallic glass multiphase composite material and its preparation, can solve the problems such as the decrease of the strength of the composite material, and achieve the effect of improving the strength and the forming ability of strong glass

Active Publication Date: 2014-01-08
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although the above-mentioned as-cast endogenous solid solution plasticized BMG composite material has a remarkable plasticizing effect, the strength of the plastic solid solution phase is much lower than that of the metallic glass matrix, resulting in a significant decrease in the strength of the composite material.

Method used

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  • Zirconium-based metallic glass multi-phase composite material and preparation method thereof
  • Zirconium-based metallic glass multi-phase composite material and preparation method thereof
  • Zirconium-based metallic glass multi-phase composite material and preparation method thereof

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Embodiment 1

[0028] (1) Selection of raw materials

[0029] The purity of each metal component that the present invention prepares master alloy ingot for selection is as table 1, and alloy composition is Zr 60 Ti 20 Cu 5.6 Ni 4.4 be 10 (atomic percent).

[0030] Table 1 The purity (%) of metal components selected for the preparation of master alloy ingots

[0031] alloy element Zr Ti Cu Ni be purity / % 99.95 99.95 99.99 99.99 99.5

[0032] (2) Preparation of master alloy ingot

[0033] Under the conditions of Ti inhalation and high-purity argon protection, master alloy buckle ingots are melted in a non-consumable arc melting furnace. The specific procedures are as follows:

[0034] a. After mechanically grinding the surface of the metal raw material to remove the oxide skin on the surface, prepare the material according to the designed composition ratio; put the prepared material into the water-cooled copper crucible in the melting furnace according ...

Embodiment 2

[0044] Adopt the method identical with embodiment 1, alloy composition is Zr 56.3 Ti 18.7 Cu 6.9Ni 5.6 be 12.5 , prepared a 25mm diameter zirconium-based metallic glass multiphase composite material, the yield strength reached 1580MPa, and the compression plasticity reached 8%.

Embodiment 3

[0046] Adopt the method identical with embodiment 1, alloy composition is Zr 52 Ti 17 Cu 9 Ni 7 be 15 , prepared a 30mm diameter zirconium-based metallic glass multiphase composite material, the yield strength exceeded 1650MPa, and the compression plasticity reached 6%.

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Abstract

The invention discloses a zirconium-based metallic glass multi-phase composite material and a preparation method thereof. The atom percentage expression formula of the zirconium-based metallic glass multi-phase composite material is as follows: ZraTibCucNisBee, wherein 52<=a<=70, 17<=b<=22, 2<=c<=9, 2<=d<=7, 4<=e<=15, and a+b+c+d+e=100. The preparation method of the zirconium-based metallic glass multi-phase composite material comprises the following steps: selecting a block metallic glass alloy system; according to a phase selection principle, adjusting the components of alloy so that a second phase solid solution of zirconium is separated out at first in the solidification process of the alloy, and a high-hardness third phase is separated out in the subsequent cooling process of the second phase solid solution; melting the alloy components obtained from the first step to form mother alloy by using an electric arc melting method; and melting the mother alloy repeatedly, carrying out gravity casting in a copper-formed mold to obtain the metallic glass multi-phase composite material. According to the invention, the zirconium-based metallic glass multi-phase composite material is high in strength and realizes the good combination of strength and plasticity while the plasticity of the metallic glass is improved.

Description

technical field [0001] The invention belongs to the technology of metal-based composite materials, in particular to a zirconium-based metallic glass multiphase composite material and a preparation method thereof. Background technique [0002] Although bulk metallic glass (BMG) materials have high fracture strength and hardness and high elastic strain limit, since the plastic deformation of single-phase metallic glass is achieved by highly localized shear deformation, the shear that can be activated before fracture With a very limited number of bands, the BMG undergoes catastrophic brittle fracture without macroscopic plastic deformation at room temperature. Therefore, the problem of room temperature brittleness has developed into an important bottleneck for the application of BMG materials. [0003] In order to improve the room temperature brittleness of BMG materials, in 2000, the Johnson research group in the United States first prepared micron-sized β-Zr(Ti) solid soluti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/10C22C1/03
Inventor 陈光成家林
Owner NANJING UNIV OF SCI & TECH
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