CN100595311C

CN100595311C - Fe-E-Y-B family block amorphous alloy

Info

Publication number: CN100595311C
Application number: CN200810061420A
Authority: CN
Inventors: 蒋建中; 黄兴民
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 2008-05-09
Filing date: 2008-05-09
Publication date: 2010-03-24
Anticipated expiration: 2028-05-09
Also published as: CN101469394A

Abstract

The invention discloses a Fe-W-Y-B series bulk amorphous alloy. The series bulk amorphous alloy contains an amorphous phase with a volume percentage of between 50 and 100 percent, and a chemical molecular formula of the alloy is Fe100-x-y-zWxYyBz, wherein x, y and z are atomic percent of W element, Y element and B element respectively, 100-x-y-z is atomic percent of Fe element, the x is more than0 and is less than 10, the y is more than 0 and is less than 10, and the z is more than 20 and is less than 24. The series bulk amorphous alloy has simple constituents, only contains four elements, has high thermal stability and good soft magnetic property, and possesses good mechanical property and amorphous forming ability at the same time.

Description

The series bulk amorphous alloy of Fe-W-Y-B

Technical field

The present invention relates to the amorphous alloy field, particularly the series bulk amorphous alloy of Fe-W-Y-B.

Background technology

Be different from traditional crystalline material, amorphous alloy has that the atomic arrangement long-range is unordered, the special microtexture of short range order, has superior physics, chemistry, machinery and magnetic property, thereby has application prospects.Through long-term and unremitting in recent decades effort, researcher has now been developed block amorphous alloy systems such as preparing Fe base, Ni base, Zr base, Cu base, Mg base, Co base, Ti base, rare earth based both at home and abroad.Wherein the Fe base block amorphous alloy receives publicity with relative cheap price especially because of its unique magnetic property.Yet as a kind of potential functional materials, the existing Fe base noncrystal alloy system of having developed does not also have strong amorphous formation ability and good soft magnetic performance simultaneously.Therefore, develop and develop a kind of Fe matrix body alloy system that has good soft magnetic performance and strong amorphous formation ability concurrently and have important industrial application value.

Summary of the invention

In order to develop the Fe base noncrystal alloy system that has good soft magnetic performance and strong amorphous formation ability concurrently, the object of the present invention is to provide a kind of composition simple, the series bulk amorphous alloy of the Fe-W-Y-B of excellent property.

The technical solution adopted for the present invention to solve the technical problems is as follows:

This series bulk amorphous alloy comprises the amorphous phase of volume fraction 50～100%, and the alloy molecular formula is Fe for the alloy molecular formula _100-x-y-zW _xY _yB _zWherein x, y and z are respectively W element, Y element and B atoms of elements percentage ratio, and 100-x-y-z is a Fe atoms of elements percentage ratio, 0＜x＜10,0＜y＜10,20＜z＜24.

The component Fe of described non-crystaline amorphous metal, W, Y, the material purity of B are 99.5%～99.9%.

The beneficial effect that the present invention has is: provided a thermostability height, amorphous formation ability is strong, the quad alloy system that soft magnetic performance and mechanical property are good, and determined to form the composition range of block (minimum size is greater than the 2mm) alloy of the amorphous phase that comprises volume fraction 50～100%.The superiority of this system amorphous alloy means that it is a kind of functional materials with application prospect.

Description of drawings

Fig. 1 is the Fe according to embodiment 1 preparation ₆₉W ₃Y ₆B ₂₂And Fe ₆₈W ₄Y ₆B ₂₂The mechanics compression performance curve of block amorphous alloy;

Fig. 2 is the XRD figure according to the series bulk amorphous alloy of Fe-W-Y-B of

embodiment

1,2,3 preparations;

Fig. 3 is the DSC figure according to the series bulk amorphous alloy of Fe-W-Y-B of

embodiment

1,2,3 preparations;

Embodiment

Step 1: master alloy melting spindle, alloy molecular formula are Fe _78-x-yW _xY _yB ₂₂, wherein x and y are respectively the atomic percent of W element and Y element, Fe _100-x-y-zW _xY _yB _zWherein x, y and z are respectively W element, Y element and B atoms of elements percentage ratio, and 100-x-y-z is a Fe atoms of elements percentage ratio, 0＜x＜10,0＜y＜10,20＜z＜24.

Step 2: adopt single roller to get rid of the band method, blow the mother alloy spindle that casting or suction casting method obtain step 1 and make block or bar carry sample.

Step 3: characterize the gained structures of samples with X-ray diffraction method, obtain the thermodynamical coordinate of sample with dsc.

Step 4: the density of measuring the block alloy sample with Archimedes's method.

Step 5: the mechanical property that characterizes the cylindrical sample of preparation with testing machine for mechanical properties.

Step 6: with the magnetic performance of magnetics testing tool (vibration magnetic strength instrument and BH loop oscilloscope) test strip alloy sample.

Embodiment 1:

This embodiment adopts and blows the Fe that casting prepares diameter 2mm ₆₈W ₄Y ₆B ₂₂The block amorphous alloy rod.

Step 1: press atomic percent Fe ₆₈W ₄Y ₆B ₂₂Weighing purity is 99.8% Fe, and purity is that 99.7% W and purity are 99.5% Y and monocrystalline B, and arc melting in the argon atmospher of titanium absorption obtains the mother alloy spindle that mixes.

Step 2: the spindle that step 1 is obtained is broken into fritter, and places the alcohol ultrasonic cleaning.

Step 3: the fritter alloy that step 2 is obtained is packed in the silica tube of lower ending opening, and induction heating is blown into fused alloy liquid in the water cooled copper mould of internal diameter 2mm with high-purity argon gas in a vacuum, makes block amorphous alloy.

Step 4: the density of measuring this block sample with Archimedes's method.

Step 5: the structure that characterizes this bulk amorphous alloy with X-ray diffraction method.

Step 6: the thermodynamical coordinate that obtains this block sample with dsc.

Step 7: with mechanics experimental equipment machine and Vickers micro-hardness the score compressed rupture strength and the hardness value of other specimen.Fig. 1 is the compression performance curve of gained.

Embodiment 2:

This embodiment adopts suction casting method to prepare the Fe of diameter 4mm ₆₉W ₃Y ₆B ₂₂The block amorphous alloy rod.

Step 1: press atomic percent Fe ₆₉W ₃Y ₆B ₂₂Weighing purity is 99.8% Fe, and purity is that 99.7% W and purity are 99.5% Y and monocrystalline B, and arc melting in the argon atmospher of titanium absorption obtains the mother alloy spindle that mixes.

Step 3: the fritter alloy arc melting in the argon atmospher of titanium absorption with step 2 obtains, when being in complete molten state, alloy utilize pressure difference that it is sucked in the water cooled copper mould of internal diameter 4mm, make block amorphous alloy.

Step 4: characterize the structure of this bulk amorphous alloy with the x ray diffraction method, Fig. 2 is the x x ray diffration pattern x of this sample.

Step 5: the thermodynamical coordinate that obtains this block sample with dsc.Fig. 3 is the DSC curve.By Fig. 2 and Fig. 3 as can be known this embodiment to have obtained diameter be the block amorphous alloy of 4mm.

Embodiment 3:

This embodiment adopts and blows casting to prepare thickness be that 30 μ m compositions are Fe ₇₂W ₂Y ₄B ₂₂Continuous amorphous ribbon sample.

Step 1: press atomic percent Fe ₇₂W ₂Y ₄B ₂₂Weighing purity is 99.8% Fe, and purity is that 99.7% W and purity are 99.5% Y and monocrystalline B, and electric lonely melting in the argon atmospher of titanium absorption obtains the mother alloy spindle that mixes.

Step 3: the fritter alloy that step 2 is obtained is packed in the silica tube of lower ending opening, and induction heating in a vacuum blows to fused alloy liquid with high-purity argon gas on the copper roller of high speed rotating (rotating speed 30m/s), makes the successive alloy strip.

Step 4: characterize this band structures of samples with the x ray diffraction method.

Step 5: the thermodynamical coordinate that obtains this carry sample with dsc.

Every performance of the block amorphous alloy that the foregoing description obtains is shown in table 1 summary.

Table 1 Fe _100-x-y-zW _xY _yB _zThe performance of series bulk amorphous alloy

Claims

1.Fe-W-Y-B series bulk amorphous alloy, it is characterized in that: this series bulk amorphous alloy comprises the amorphous phase of volume fraction 50～100%, Fe100-x-y-zWxYyBz, wherein x, y and z are respectively W element, Y element and B atoms of elements percentage ratio, 100-x-y-z is a Fe atoms of elements percentage ratio, 0＜x＜10,0＜y＜10,20＜z＜24.

2. the series bulk amorphous alloy of Fe-W-Y-B according to claim 1 is characterized in that: the component Fe of described non-crystaline amorphous metal, and W, Y, the material purity of B are 99.5%～99.9%.