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Block Fe-based amorphous alloy with high Fe content and preparation method thereof

An iron-based amorphous alloy and bulk technology is applied in the field of bulk iron-based amorphous alloy preparation to achieve the effects of high strength and toughness, high forming ability and low melting temperature

Active Publication Date: 2011-05-11
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, it has not been reported that the iron-based bulk amorphous alloy material with an iron content higher than ~77% has been developed

Method used

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  • Block Fe-based amorphous alloy with high Fe content and preparation method thereof
  • Block Fe-based amorphous alloy with high Fe content and preparation method thereof
  • Block Fe-based amorphous alloy with high Fe content and preparation method thereof

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preparation example Construction

[0038] In the preparation method of the invention, the Fe-P prealloy prepared in proportion and other raw materials are placed in a vacuum induction melting furnace to smelt the master alloy. Then put the master alloy in the burnt boron oxide coating agent, and carry out purification under vacuum conditions at a temperature of about 50-245K higher than its melting point for about 2 hours or more. During the purification process, let the alloy melt cool to solidify, then heat up to melt and purify, and repeat the above solidification-melting process until the alloy interface is free of bubbles and the interface is stable when it is melted again. The purified master alloy is melted in the induction furnace of the rapid solidification device, and cast into the copper mold through the copper mold casting method by spraying or suction casting to directly obtain the amorphous alloy block sample material; it can also be used Thin strips of amorphous alloys were prepared by strip thro...

Embodiment 1

[0041] Embodiment 1: prepare Fe 78 Mo 1 P 9 C 6.5 B 3.5 Si 2 Amorphous Alloy Rods

[0042] First, batching is carried out according to the chemical composition ratio, and then the master alloy is made by repeated melting in a vacuum induction melting furnace. The boron oxide coating agent is kept warm under vacuum conditions at about 1230K to remove moisture. When the boron oxide coating agent is clear and free of bubbles, the master alloy can be placed in the boron oxide coating agent under vacuum conditions, and purified at a temperature of about 80-200K higher than the melting point of the alloy under vacuum conditions. 2 hours or more. During the purification process, let the alloy melt cool to solidify, then heat up to melt and purify, and repeat the above solidification-melting process until the alloy interface is free of bubbles and the interface is stable when it is melted again. The purified master alloy is placed in the induction furnace of the rapid solidifi...

Embodiment 2

[0046] Embodiment 2: prepare Fe 80 Mo 1 P 8 C 6 B 2 Si 3 Amorphous Alloy Rods

[0047] First, batching is carried out according to the chemical composition ratio, and then the master alloy is made by repeated melting in a vacuum induction melting furnace. The boron oxide coating agent is kept warm at about 1300K under vacuum conditions to remove moisture. When the boron oxide coating agent is clear and free of bubbles, the master alloy can be placed in the boron oxide coating agent under vacuum conditions, and purified at a temperature of about 100-200K higher than the melting point of the alloy under vacuum conditions. About 2 hours or more. During the purification process, let the alloy melt cool to solidify, then heat up to melt and purify, and repeat the above solidification-melting process until the alloy interface is free of bubbles and the interface is stable when it is melted again. The purified master alloy is placed in the induction furnace of the rapid solid...

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Abstract

Block Fe-based amorphous alloy with high Fe content and a preparation method thereof belong to the technical field of preparation of block Fe-based amorphous alloy. Chemical formula thereof is as follows: TM1(a)-TM2(b)-AM1(c)-AM2(d)-AM3(e)-AM4(f), wherein TM1 is Fe, TM2 is Mo, AM1 is P, AM2 is C, AM3 is B, and AM4 is Si. The preparation method comprises the following steps: smelting prepared materials into master alloy, burning to prepare a boron oxide coating agent; when the boron oxide coating agent is clear and has no air bubbles, arranging the master alloy therein; conducting purificationrepeatedly at the temperature higher than the melting point of the alloy by 50K to 250K until an alloy interface has no air bubbles and is stable; and placing the purified master alloy in an induction furnace so as to be melted, and then injecting or suction-casting the melted master alloy into a copper mould so as to be cooled, thus obtaining the block Fe-based amorphous alloy. The alloy has thecharacteristics of high formation capability, high strength, excellent soft magnetic property and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of bulk iron-based amorphous alloys, in particular to a new high-iron-content iron-based amorphous with high strength, toughness, soft magnetism and good forming ability, which is mainly used in soft magnetic materials, structural materials and corrosion-resistant materials. Alloy materials. Background technique [0002] Steel materials have been widely used for more than 3000 years due to their low price, abundant resources, recyclability and machinability. In recent years, with the development of science and technology, "high-tech" materials with novel structural and functional properties have increasingly become one of the hotspots in material science research. The amorphous alloy prepared by rapidly solidifying the alloy composition from the gaseous or liquid state forms a special amorphous structure because it does not have long-range atomic order. This amorphous structure leads to the u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02
Inventor 姚可夫刘凤娟
Owner TSINGHUA UNIV