A zirconium-based amorphous composite material with added high toughness and its preparation method

A zirconium-based amorphous alloy and zirconium-based amorphous technology are applied in the field of materials with high mechanical properties, and can solve problems such as uneven distribution of external phases, low interface strength between the second phase and the amorphous matrix, and unsuitability for industrial production. Achieve the effect of increasing the bending fracture strain and improving the intrinsic properties of the material

Active Publication Date: 2021-01-01
AAC PRECISE MFG TECH CHANGZHOU
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Adding a second phase to prepare amorphous composites is a method to improve the toughness of amorphous alloys, but there is often a bonding (wettability) problem between the external phase and the amorphous matrix, which makes the interface strength between the second phase and the amorphous matrix lower.
In addition, the addition of external phase often requires a large volume fraction (greater than 40%) to achieve the toughening effect, which easily causes the problem of uneven distribution of external phase
Due to the different shapes of the external phases, for the fibrous, lamellar and three-dimensional skeleton-like second phases, it is often necessary to prepare amorphous composite materials by impregnation or hot pressing, which is not suitable for industrial production.

Method used

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  • A zirconium-based amorphous composite material with added high toughness and its preparation method
  • A zirconium-based amorphous composite material with added high toughness and its preparation method
  • A zirconium-based amorphous composite material with added high toughness and its preparation method

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Effect test

Embodiment 1

[0057] This embodiment illustrates the preparation of the Zr-based amorphous composite material A1 provided by the present invention, and the composition of the amorphous matrix (i.e. substrate) is Zr 51.9 Cu 31.8 Ni 6 Al 10 Ag 0.1 Y 0.2 , the second phase is C powder, and the addition amount is 3Vol%. The addition of C is expected to react with the additional pickaxe element in situ to form ZrC. The presence of ZrC can prevent the expansion of the shear band in the amorphous matrix, and the ZrC formed by the in situ reaction will have a better interface with the amorphous matrix. , thus improving the mechanical properties of the product without changing the original properties of the alloy.

[0058] a. Formula Zr according to the chemical composition 51.9 Cu 31.8 Ni 6 Al 10 Ag 0.1 Y 0.2 , each amorphous alloy formula needs to prepare 240g master alloy, one master alloy is prepared according to 80g, and a total of 3 master alloys need to be prepared. Convert the de...

Embodiment 2

[0068] This embodiment illustrates the preparation of the pick-based amorphous composite material B1 provided by the present invention, and the amorphous matrix component is Zr 56.1 f 0.6 Cu 15.2 Ni 14.0 Al 10.4 Nb 3.5 Y 0.2 , the second phase is W, and the addition amount is 1.75Vol%. W dissolves in a small amount during the preparation of amorphous composites, forming a transition interface with the amorphous matrix, the dissolved part does not react with the amorphous matrix, and the undissolved second phase prevents the expansion of the shear band in the amorphous matrix by bypassing the mechanism, thus Improve the mechanical properties of the product without changing the original properties of the alloy.

[0069] a. Formula Zr according to the chemical composition 56.1 f 0.6 Cu 15.2 Ni 14.0 Al 10.4 Nb 3.5 Y 0.2 , each amorphous alloy formula needs to prepare 240g master alloy, one master alloy is prepared according to 80g, and a total of 3 master alloys need ...

Embodiment 3

[0078] This embodiment illustrates the preparation of the pick-based amorphous composite material C1 provided by the present invention, and the amorphous matrix component is Zr 51.9 Cu 31.8 Ni 6 Al 10 Ag 0.1 Y 0.2 , the second phase is Ni, and the addition amount is 3Vol%. As a constituent element of the amorphous matrix, Ni is dissolved in a small amount during the preparation of the amorphous composite material. The dissolved part will not affect the formation ability of the amorphous matrix. The undissolved second phase skill prevents the expansion of the shear band in the amorphous matrix by bypassing the mechanism. It can also absorb the expansion energy of the shear band through its own plastic deformation, thus improving the mechanical properties of the product without changing the original properties of the alloy.

[0079] Steps a, b, d, and e are the same as in Example 2, only the suspension smelting process in c is different. Because Ni is magnetic and has a lo...

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Abstract

The invention relates to the field of materials with high mechanical properties, in particular to an added high-toughness zirconium-based amorphous composite material and a preparation method thereof. The material is mainly made of zirconium-based amorphous alloy and a second phase. This application adds a second phase to the original amorphous alloy matrix. The existence of the second phase prevents the expansion of a single shear band in the amorphous, induces the formation of more shear bands, and does not reduce the fracture bending strength of the original alloy material. Under the premise of improving the bending fracture strain of the material, the method provided by the present invention improves the intrinsic properties of the material from the raw material side, does not need to carry out surface treatment on the formed product, and does not need to introduce additional processes except for the master alloy melting step , suitable for mass production.

Description

technical field [0001] The invention relates to materials with high mechanical properties in the fields of consumer electronics, precision devices (such as robots), medical equipment, aerospace and other applications, in particular to a high-toughness ultra-high-strength zirconium-based amorphous composite material and its preparation method . Background technique [0002] Amorphous alloys are named for their obvious structural differences from common crystalline materials. General materials exist in the form of crystals, and the characteristics of amorphous are long-range disorder (short-range order), metastable state (crystallization at a certain temperature), isotropic physical properties to a certain extent, no exact melting point, and glass transition temperature, etc. At the same time, because it has a similar structure to common glass, it has the characteristics of solid state, metal, and glass, so it is also called metallic glass (Metallic Glass). Because of its b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/10C22C1/03
CPCC22C1/03C22C45/10C22C1/11
Inventor 李丹王晶
Owner AAC PRECISE MFG TECH CHANGZHOU
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