Method for improving amorphous alloy forming ability

A technology of amorphous alloys and rare earth elements, which is applied in the field of preparation of amorphous alloys, can solve the problems of low purity of alloying elements, achieve the effects of improving mechanical properties, reducing environmental protection requirements, and facilitating industrial production

Inactive Publication Date: 2008-06-11
BYD CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a feasible, economical and effective method to solve the above-mentioned defects caused by the low purity of alloy elements. By adding an appropriate amount of rare earth elements, the amorphous forming ability of the alloy can be increased to a certain extent, so that the alloy's Bending strength, hardness, etc. are better improved; thereby achieving the purpose of reducing production costs and making the alloy tend to be mass-produced

Method used

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  • Method for improving amorphous alloy forming ability

Examples

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Embodiment 1

[0017] This example illustrates the preparation method of the lanthanum-based amorphous alloy provided by the present invention.

[0018] Under the premise of using argon (purity 99.99%) as the protective gas, the impurity gas content is greater than 1000ppm, and the amorphous alloy of the following formula is smelted, and the alloy ratio is as follows: (La 55 al 20 Cu 10 Ni 10 co 5 ) 97 (Y, Nd) 3 . The selected elements have a purity of 99.0%; the specific experimental conditions and steps for smelting amorphous alloys are as follows: 1) using an electric arc melting furnace for smelting, the sample forming mold is a water-cooled copper mold, and the cooling rate is 10 4 k / s; 2) Use Φ3mm, Φ4mm, Φ5mm, 2mm×4mm or 2mm×5mm stone grinding nozzles as pouring pipes; 3) Prepare alloy samples with a mass of 25 grams according to the given ingredients; 4) Use copper molds for casting , the size of the prepared sample is: 3mm×10mm×100mm; 5) The sample is prepared by pouring or su...

Embodiment 2

[0020] With SF6 (purity 99.99%) as the protective gas, the impurity gas content is greater than 8000ppm, and the purity of all elements used is 98.0%; the composition of the amorphous alloy is: (Zr 57 al 20 Cu 10 Ni 8 Ti 5 ) 95 (Y, Nd) 5 , all the other are with embodiment 1.

Embodiment 3

[0022] This example illustrates the preparation method of the copper-based amorphous alloy provided by the present invention.

[0023] Under the protection of argon (purity 99.0%) gas, the impurity gas content is greater than 5000ppm, and the purity of the selected elements is 99.2%; the amorphous alloy of the following formula is smelted, and the alloy ratio is: (Cu 45 Zr 35 Ti 6 Ag 14 ) 90 (Ce, Y, Pr) 10 , all the other are with embodiment 1.

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Abstract

The invention discloses a preparation method of amorphous alloy, which comprises the following steps: under the gaseous protection, an element is added in one of Zr radical, Ti radical, Mg radical, Cu radical, La radical and Fe radical amorphous alloys, the amorphous alloys are melted in the reaction furnace according to the metric ratio and rapidly cooled to coagulate, and the added element is a lanthanon element. The lanthanon element occupies 0.1 percent to 10 percent of the entire atom percent content of the amorphous alloy. By adopting the method of the invention to prepare amorphous alloy, the requirement to the raw material and the foreign impurity gas content of the reacting container can be reduced, and simultaneously, the amorphous forming capability and performance of the amorphous alloy is enhanced.

Description

technical field [0001] The invention relates to a preparation method of an amorphous alloy. Background technique [0002] The preparation of amorphous alloys is based on the unique glass characteristics of metals: long-range discontinuity, short-range order, and the characteristics of liquid structure and performance in the superplastic region are unchanged and the viscosity is close to solidification, making it in the supercooled liquid region. Internal rapid solidification forming; compared with crystalline alloys, it has extremely high strength, hardness, wear resistance, corrosion resistance and high electrical resistance, and also exhibits excellent superconductivity and low magnetic loss. It is widely used in IT electronics, machinery, chemical industry and other industries; however, if the raw materials for preparing amorphous alloys are not pure or the purity is not high, a certain concentration of oxygen elements will be introduced into the alloys, and at the same t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/00C22C45/00B22D27/04
Inventor 李梅张法亮宫清
Owner BYD CO LTD
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