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Iron-based amorphous alloy and preparation method thereof

A technology for iron-based amorphous alloys and raw materials, applied in the field of iron-based amorphous alloys and their preparation, can solve the problems of low amorphous forming ability of iron-based amorphous alloys, and achieve high amorphous forming ability, Vickers hardness and Excellent compressive rupture strength and production cost reduction effect

Active Publication Date: 2009-09-23
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] But the amorphous formation ability of this iron-based amorphous alloy is still low, and the diameter of the iron-based amorphous alloy prepared in the examples of this application is only below 4mm

Method used

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  • Iron-based amorphous alloy and preparation method thereof
  • Iron-based amorphous alloy and preparation method thereof

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preparation example Construction

[0026] The preparation method of the iron-based amorphous alloy provided by the present invention includes melting and forming the raw material of the iron-based amorphous alloy, wherein the raw material of the iron-based amorphous alloy includes Fe, Co, ETM, C, B and RE, And their addition satisfies the ratio of each component represented by the following general formula: (Fe x co 1-x ) a (ETM) b C c B d RE e , where a, b, c, d and e are atomic percentages, 40≤a≤60, 0<b≤30, 0<c≤20, 0<d≤10, 0<e≤10, and a+ b+c+d+e=100; x is the atomic fraction, 0.5≤x<1; ETM is one or several elements in the IVB group elements, VB group elements and VIB group elements; RE is one of the rare earth elements one or more elements.

[0027] According to the preparation method provided by the invention, the smelting of the raw material of the iron-based amorphous alloy can be carried out either under a vacuum condition protected by a protective gas or under an air condition. The rare earth ele...

Embodiment 1

[0034] (Fe 0.87 co 0.13 ) 55 Ti 14 Zr 8 C 15 B 6 Y 2 Preparation of Bulk Amorphous Alloy

[0035] The strip-shaped Fe, Co, Ti, Zr, C, B, Y metal raw materials with a purity of 99.9% by weight are added to the vacuum arc melting furnace (Shenyang Scientific Instrument Factory) according to the atomic percentage shown in the above formula, and vacuumized to a vacuum of 1×10 -2 Pa, filled with argon with a purity of 99.99% as a protective gas so that the vacuum in the melting furnace is 0.05 MPa, and then smelted at 1800° C. for 5 minutes to completely melt and stir the alloy raw materials. The melt was then cast into copper molds with 10 2 The cooling rate of K / s is water-cooled to obtain sample A. The critical dimension of this sample was measured to be 15mm.

[0036] The obtained sample A is carried out XRD diffraction analysis on the X-ray powder diffractometer, and the obtained X-ray diffraction pattern is as follows figure 1 As shown in A, it can be seen from th...

Embodiment 2

[0047] (Fe 0.93 co 0.07 ) 55 Ti 15 Nb 10 C 12 B 6.5 Ce 1.5 Preparation of amorphous alloy

[0048] The bulk Fe, Co, Ti, Nb, C, B, Ce metal raw materials with a purity of 99.9% by weight are added to the vacuum induction melting furnace (Shenyang Scientific Instrument Factory) according to the atomic percentage shown in the above formula, and vacuumized to The vacuum degree is 10 Pa, and the argon gas with a purity of 99.99% is filled as a protective gas to make the vacuum degree in the melting furnace 0.05 MPa, and then smelted at 2000 ° C for 3 minutes to completely melt and stir the alloy raw materials. The melt was then cast into copper molds with 10 3 The cooling rate of K / s was water-cooled to obtain sample B. The critical dimension of this sample was found to be 12mm.

[0049] The obtained sample B is carried out XRD diffraction analysis on the X-ray powder diffractometer, and the obtained X-ray diffraction pattern is as follows figure 1 As shown in B in the f...

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Abstract

The invention provides an iron-based amorphous alloy, which comprises components as the following formula: (FexCo1-x)aETMbCcBdREe, wherein a, b, c, d and e are atomic percent; a is more than or equal to 40 and less than or equal to 60, b is more than 0 and less than or equal to 30, c is more than 0 and less than or equal to 20, d is more than 0 and less than or equal to 10, e is more than 0 and less than or equal to 10, and the sum of the a, the b, the c, the d and the e is equal to 100; x is atomic percent, and x is more than or equal to 0.5 and less than 1; ETM is one or more IVB elements, VB elements and VIB elements; and RE is one or more rare-earth elements. The invention also provides a method for preparing the iron-based amorphous alloy. Compared with the prior iron-based amorphous alloy, the iron-based amorphous alloy forming capability is high, and other properties of the amorphous alloy such as melting point, vitrification temperature, hardness and compressive fracture strength are still high.

Description

technical field [0001] The invention relates to an iron-based amorphous alloy and a preparation method thereof. Background technique [0002] Amorphous alloys have a special structure and do not have grain boundaries like traditional crystals. Compared with polycrystalline alloys with the same composition, they have better corrosion resistance, magnetic properties, electrical properties and wear resistance. Amorphous alloy is a long-range disordered and short-range ordered structure. There is no periodic arrangement of crystal structure, so there will be no defects such as dislocations, and various fracture modes caused by dislocations will not occur during the deformation process. , so its mechanical properties are also better. [0003] So far, different substrates have been prepared, including amorphous alloys based on Pd, Mg, Ln, Zr, Cu, Co, Ti, Ni, Nd and Fe. Compared with other bulk amorphous alloy systems, the raw material price of Fe-based amorphous alloy is greatly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/02
Inventor 赵兴涛陈海林张法亮宫清
Owner BYD CO LTD
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