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Liquid phase separation two-phase bulk metallic glass material and preparation method thereof

A technology for liquid phase separation and bulk metal, which is applied in the field of liquid phase separation of dual-phase bulk metallic glass materials and preparation, can solve the problems of complex process, difficult hot pressing temperature and high cost, and achieves simple preparation process and shortened preparation process. Process and cost, low cost effect

Active Publication Date: 2017-02-15
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

The dual-phase bulk metallic glass material prepared by this method, firstly, the interfacial bonding between different metallic glass phases is poor, and the correlation performance is poor; It is very difficult to select; thirdly, this powder metallurgy preparation process is complicated and the cost is high

Method used

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  • Liquid phase separation two-phase bulk metallic glass material and preparation method thereof
  • Liquid phase separation two-phase bulk metallic glass material and preparation method thereof
  • Liquid phase separation two-phase bulk metallic glass material and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0049] Using commercially available pure metal Zr, Ce, Co, Cu, Al element rods, blocks, and plate body materials (purity higher than 99.9wt%) as starting materials, arc melting in an argon atmosphere passivated by titanium to form a matrix Alloy ingot, the alloy composition (atomic percentage, the same below) is Zr 51.76 Ce 6.2 co 22.18 Cu 4.86 Al 15 (S3). The master alloy ingot needs to be arc-melted several times to ensure the uniformity of the composition. Take an appropriate amount of master alloy material and place it in the copper crucible of the smelting furnace with the function of copper mold suction casting. First, the arc smelts high-purity titanium to absorb oxygen, and then the arc re-melts the master alloy material. After it is completely melted, it is completed under negative pressure conditions. Copper mold suction casting (cooling speed is 10~10 4 K / s), to obtain a liquid phase separation dual-phase bulk metallic glass material S3 with a diameter of 2 mm...

Embodiment 2

[0051] Using commercially available pure metal elements such as Zr, Ce, La, Co, Cu, and Al in rods, blocks, and plates (purity higher than 99.9wt%) as starting materials, arc melting in an argon atmosphere passivated by titanium Master alloy ingot, the alloy composition (atomic percentage, the same below) is Zr 51.76 Ce 3.1 La 3.1 co 22.18 Cu 4.86 Al 15 (S4). The master alloy ingot needs to be arc-melted several times to ensure the uniformity of the composition. Take an appropriate amount of master alloy material and place it in the copper crucible of the smelting furnace with the function of copper mold suction casting. First, the arc smelts high-purity titanium to absorb oxygen, and then the arc re-melts the master alloy material. After it is completely melted, it is completed under negative pressure conditions. Copper mold suction casting (cooling speed is 10~10 4 K / s), to obtain a liquid phase separation dual-phase bulk metallic glass material S4 with a diameter of ...

Embodiment 3

[0053]Using commercially available pure metal elements such as Zr, Ce, La, Co, Cu, and Al in rods, blocks, and plates (purity higher than 99.9wt%) as starting materials, arc melting in an argon atmosphere passivated by titanium Master alloy ingot, the alloy composition (atomic percentage, the same below) is Zr 53.59 Ce 3.2 La 3.2 co 22.97 Cu 5.04 Al 12 (S5). The master alloy ingot needs to be arc-melted several times to ensure the uniformity of the composition. Take an appropriate amount of master alloy material and place it in the copper crucible of the smelting furnace with the function of copper mold suction casting. First, the arc smelts high-purity titanium to absorb oxygen, and then the arc re-melts the master alloy material. After it is completely melted, it is completed under negative pressure conditions. Copper mold suction casting (cooling speed is 10~10 4 K / s), to obtain a liquid phase separation dual-phase bulk metallic glass material S5 with a diameter of 3...

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Abstract

The invention belongs to the design and preparation technology of bulk metallic glass materials, and in particular to a liquid-phase separation biphasic bulk metallic glass material and a preparation method thereof. The liquid-phase separation biphasic bulk metallic glass material comprises a liquid-phase separation alloy Zr-BE formed by alloy elements of Zr and BE, and an added other alloy element i to respectively form Zr-enriched and RE-enriched two metallic glass phases under the condition of quick cooling. Before the glass transition of an alloy melt occurs, liquid-liquid phase separation occurs firstly to generate Zr-enriched and RE-enriched two liquid phases; and the added other alloy element i is selectively distributed in the two liquid phases to respectively evolve to areas near eutectic components of respective alloy systems so as to achieve strong amorphous forming ability. In the following quick cooling process, glass transition occurs on the two liquid phases, and a biphasic bulk metallic glass bar is prepared through copper mold casting; the diameter of prepared Zr-based biphasic bulk metallic glass is within 1-3 mm; and the diameter of prepared RE-based biphasic bulk metallic glass is within 1-2 mm.

Description

technical field [0001] The invention belongs to the design and preparation technology of bulk metallic glass materials. Specifically, it combines the characteristics of liquid phase separation and the selective distribution of solute elements in the two separated liquid phases and the characteristics of the minimum free energy of the liquid phase system to design a Liquid phase separation two-phase bulk metallic glass material and preparation method. Background technique [0002] Metallic glass materials (that is, amorphous alloys) have excellent mechanical, physical, and chemical properties, and have broad application prospects in the fields of automobiles, aerospace, electronics, machinery, medical materials, and sporting goods. Since the first discovery of Au-Si alloy metallic glass materials in the form of thin ribbons in 1960, there has been a great deal of interest in this new class of metallic materials. In 1982, bulk metallic glasses with critical dimensions larger ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/00C22C45/10C22C1/02B22D27/04
Inventor 何杰王中原江鸿翔赵九洲
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI