CN110218934A - A kind of Fe-Ga-Ce-B alloy bar material and preparation method thereof and a kind of cooling copper mould - Google Patents
A kind of Fe-Ga-Ce-B alloy bar material and preparation method thereof and a kind of cooling copper mould Download PDFInfo
- Publication number
- CN110218934A CN110218934A CN201910682379.1A CN201910682379A CN110218934A CN 110218934 A CN110218934 A CN 110218934A CN 201910682379 A CN201910682379 A CN 201910682379A CN 110218934 A CN110218934 A CN 110218934A
- Authority
- CN
- China
- Prior art keywords
- alloy
- cooling
- iron
- cavity portion
- taper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
- C22C33/06—Making ferrous alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention provides a kind of Fe-Ga-Ce-B alloy bar materials and preparation method thereof and a kind of cooling copper mould, are related to functional material preparation technical field.The chemical composition of Fe-Ga-Ce-B alloy bar material provided by the invention is Fe100‑(x+y+z)GaxCeyBz, wherein x=17~19, y=0.2~1.5, z=0.8~1.2；The draw ratio of the Fe-Ga-Ce-B alloy bar material is 7~14.The present invention is to provide big L/D ratio alloy bar materials can effectively improve the Magnetostriction and plasticity, intensity of alloy using Ce, B dual element doping iron gallium alloy.The present invention provides a kind of cooling copper moulds, are made of the molding copper mold with gas vent and taper cooling down device, can crystallographic orientation big L/D ratio iron gallium alloy bar, improve the magnetostriction coefficient and casting character of alloy.
Description
Technical field
The present invention relates to functional material preparation technical field, in particular to a kind of Fe-Ga-Ce-B alloy bar material and its preparation
Method and a kind of cooling copper mould.
Background technique
Iron gallium (Fe-Ga) series alloy has the mechanical performance more excellent than Terfenol-D, brittleness is small, can hot rolling, can
To be machined using traditional method for metal working to it.The polycrystalline Fe-Ga alloy mangneto of current practice preparation
Coefficient of dilatation is also very low, and can the Magnetostriction that improve polycrystalline Fe-Ga alloy be that can such material be used widely
Key.
There may be three kinds of phase structures, A for Fe-Ga alloy2Phase (body-centered cubic (bcc), unordered a-Fe phase), DO3Phase
(bcc, orderly FeGa phase) and L12Phase (face-centered cubic (fcc), orderly FeGa phase).Generally, it is considered that A2Relative to Fe-Ga
The Magnetostriction of alloy plays facilitation, and orderly DO3Phase and L12Phase then plays inhibiting effect (Clark, A.E.；
Restorff,J.B.；Wun-Fogle,M.Hathaway,K.B Lograsso,T.A.；Huang,M.；Summers,
E.J.Appl.Phys.2007,101.09C507.doi:10.1063/1.2670376).
Element doping mixes a small amount of other elements in a crystal structure as matrix, be that a kind of raising is more
The effective means of the Magnetostriction of brilliant Fe-Ga alloy.Because it is different from original matrix in the chemically to be doped element,
Lattice structure will appear various variations and defect, to promote the property of original matrix, or increases and does not have originally
Property.Choose variety classes, different content element doping can the structure to alloy generate different influences from performance,
It is the doping of single-element through most of disclosed document and patent, the performance of iron gallium (Fe-Ga) alloy is influenced to be also single
, the magnetostriction coefficient of the polycrystalline Fe-Ga alloy of melting is also smaller, and comprehensive mechanical performance is bad, can't fully meet device
The requirement of part processing.
In addition, iron gallium (Fe-Ga) the series alloy majority reported all is used to manufacture microdevice, accurate control is realized.
After being smelted into master alloy, iron gallium alloy generally will reorientation crystallize into orientation bar can just be processed into device use, because
And general diameter all very littles when the casting of this bar, and length is larger, i.e., major diameter is bigger.
Traditional mold is all simple red copper mold or water-cooled metal copper mould.These traditional red copper mould structure letters
Air pressure, which increases, after single, intracavity diameter is small and length is long, therefore aluminium alloy is compressed due to the air in die cavity when casting hinders to close
Golden liquid flows downward, and filling die cavity speed reduces, at this point, metal die fast endothermic more causes the fast prompt drop of aluminium alloy mobility
It is low, it is unfavorable for crystallographic orientation bar；Also, existing mold and cooler cannot but provide alloy liquid cooling temperature gradient, or
Temperature gradient is smaller, it is difficult to significantly improve magnetostriction coefficient.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of Fe-Ga-Ce-B alloy bar materials and preparation method thereof and one kind
Cooling copper mould.Fe-Ga-Ce-B alloy bar material provided by the invention is the iron gallium alloy of dual element doping, it can be achieved that dual element
The synergistic effect of regulation effectively improves the Magnetostriction and plasticity, intensity of alloy；Also, cooling copper provided by the invention
Mold is the cooling mold of gradient, can crystallographic orientation big L/D ratio iron gallium alloy bar, improve alloy magnetostriction coefficient and
Casting character.
In order to achieve the above-mentioned object of the invention, the present invention the following technical schemes are provided:
The present invention provides a kind of Fe-Ga-Ce-B alloy bar material, the chemical composition of the Fe-Ga-Ce-B alloy bar material is
Fe100-(x+y+z)GaxCeyBz, wherein x=17~19, y=0.2~1.5, z=0.8~1.2；The Fe-Ga-Ce-B alloy bar material
Draw ratio be 7~14.
The present invention provides a kind of cooling copper moulds, including molding copper mold and taper cooling down device；
The molding copper mold includes cavity portion and riser part；The cavity portion is provided with gas vent；
The taper cooling down device is truncated cone, and the lower end surface diameter of the taper cooling down device is more straight than upper surface
Big 40~the 100mm of diameter；The taper cooling down device includes wall parts and chamber portion；The chamber portion is arranged in taper
The center of cooling down device, the size of the chamber portion and the size of molding copper mold cavity portion match；The wall portion
Set up separately and is equipped with gas vent.
Preferably, the cavity portion internal diameter of the molding copper mold is 3~10mm, and outer diameter is 3mm bigger than internal diameter, and bottom wall thickness is
5mm。
Preferably, the upper surface diameter of the taper cooling down device is bigger than the outer diameter of the cavity portion of the molding copper mold
3mm；The taper cooling down device is 30~50mm higher than the cavity portion of the molding copper mold.
Preferably, the gas vent of the molding copper mold cavity portion is from the upper surface of cavity portion down every 10~20mm
It is four radially symmetrical, a gas vent is additionally provided in the bottom centre of cavity portion；
The diameter of the gas vent is 1~2mm.
Preferably, the material of the molding copper mold and taper cooling down device is red copper.
The present invention provides the preparation methods of Fe-Ga-Ce-B alloy bar material described in above scheme, comprising the following steps:
Iron, gallium, cerium and iron boron intermediate alloy are subjected to vacuum melting under protective atmosphere, alloy mother's ingot is obtained after solidification；
Progress gradient cooling in cooling copper mould described in above scheme will be flowed into after alloy mother ingot fusing, and obtain institute
State Fe-Ga-Ce-B alloy bar material.
Preferably, the vacuum melting carries out in vacuum induction melting furnace；The furnace internal pressure of the vacuum induction melting furnace
Power is less than 0.05Pa；The electric current of the vacuum induction melting furnace is 1350~1450A.
Preferably, during vacuum melting, the iron, gallium, cerium and iron boron intermediate alloy addition sequence are as follows: be first added
Iron boron intermediate alloy is added after iron fusing 1/3~1/2 in iron；Gallium and cerium are completely melt and then sequentially added to iron.
Preferably, the vacuum melting repeats 3~4 times.
The present invention provides a kind of Fe-Ga-Ce-B alloy bar material, the chemical composition of the Fe-Ga-Ce-B alloy bar material is
Fe100-(x+y+z)GaxCeyBz, wherein=17~19, y=0.2~1.5, z=0.8~1.2；The Fe-Ga-Ce-B alloy bar material
Draw ratio be 7~14.Fe-Ga-Ce-B alloy bar material provided by the invention is big L/D ratio alloy bar material, using Ce, B double base
Plain doping iron gallium alloy amplifies element doping to alloy Magnetostriction and modeling, it can be achieved that the synergistic effect that dual element regulates and controls
Property, the improvement effect of intensity.
The present invention provides a kind of cooling copper mould, cooling copper mold provided by the invention is because there is radial direction (circumferencial direction) exhaust
The double action of the molding copper mold and the cooling down device with taper in hole, there are biggish temperature gradient, aluminium alloy not only flows
Property is good, and crystal grain energy oriented growth.Therefore, iron gallium alloy liquid is cooled down using cooling copper mold provided by the invention, energy
Enough crystallographic orientation big L/D ratio iron gallium alloy bars, improve the magnetostriction coefficient and casting character of alloy, solve traditional mould
Has the disadvantages of big L/D ratio iron gallium alloy pencil rod Magnetostriction prepared is not high, casting character is not good enough；And the present invention mentions
The cooling copper mold apparatus structure of confession is simple, is not necessarily to coolant liquid.Embodiment the result shows that, through the invention cool down copper mould preparation
Fe-Ga-Ce-B alloy bar material surface is relatively smooth, and without obvious casting flaw, maximum magnetostriction value coefficient is up to 370 × 10-6。
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the cooling copper mould of the present invention, and top figure is main view in Fig. 1, and lower section figure is top view；
Fig. 2 is the pictorial diagram that copper mold is formed in the cooling copper mould of the present invention；
In Fig. 1~2,1 indicates that molding copper mold, 1-1 indicate the riser part of molding copper mold, and 1-2 indicates the type of molding copper mold
Cavity segment, 2 indicate taper cooling down device, and 3 indicate that gas vent, D1 indicate that the internal diameter of cavity portion, D2 indicate cavity portion
Outer diameter, D3 indicate that the diameter of taper cooling down device upper surface, D4 indicate that the diameter of rod radial air vent, D5 indicate bottom centre row
The diameter of stomata, D6 indicate that the diameter of taper cooling down device lower end surface, D7 indicate that the internal diameter of plane on riser part, D8 indicate
The outer diameter of plane on riser part, L1 indicate that the interior height of cavity portion, L2 indicate that the bottom wall thickness of cavity portion, L3 indicate taper
The height of cooling down device；
Fig. 3 is the Fe that embodiment 1 obtains81.2Ga17Ce0.8B1The pictorial diagram of alloy bar material；
Fig. 4 is the Magnetostriction curve graph for the Fe-Ga-Ce-B alloy bar material that Examples 1 to 2 obtains.
Specific embodiment
The present invention provides a kind of Fe-Ga-Ce-B alloy bar material, the chemical composition of the Fe-Ga-Ce-B alloy bar material is
Fe100-(x+y+z)GaxCeyBz, i.e. the atomic ratio of Fe, Ga, Ce and B is 100- (x+y+z): x:y:z, wherein x=17~19, y=
0.2~1.5, z=0.8~1.2；The draw ratio of the Fe-Ga-Ce-B alloy bar material is 7~14.
Fe-Ga-Ce-B alloy bar material provided by the invention is the big L/D ratio iron gallium alloy bar of Ce, B dual element doping.
In the present invention, Ce is the highest rare earth metal of abundance in the earth's crust, and cheap light rare earth elements Ce substitutes Ga element and is solid-solution in Fe
Lattice in, formed A2Phase and CeFe2Second phase, to increase the magnetostriction coefficient of Fe-Ga alloy；B is with interstitial atom
Form is doped in Fe-Ga lattice, partially inhibits orderly DO3The formation of phase, to increase the magnetostriction system of Fe-Ga alloy
Number.Therefore, the present invention uses Ce, B dual element doping iron gallium alloy, it can be achieved that the synergistic effect that dual element regulates and controls, amplifies element
Doping is to alloy Magnetostriction and plasticity, the improvement effect of intensity.
The present invention provides a kind of cooling copper moulds, as shown in Figure 1, including molding copper mold 1 and taper cooling down device 2.
In the present invention, the molding copper mold 1 includes cavity portion 1-1 and riser part 1-2；Riser part conduct
Top links together with cavity portion；The riser part is preferably shaped to taper, and the cavity portion is preferably cylinder
Shape, as shown in Figure 2.In the present invention, the internal diameter of the cavity portion is preferably 3~10mm, and outer diameter is preferably 3mm bigger than internal diameter,
Bottom wall thickness is preferably 5mm；The height of the cavity portion is accordingly arranged according to the draw ratio of the iron gallium alloy bar.
In the present invention, the cavity portion is provided with gas vent 3.In the present invention, the gas vent of the cavity portion is preferably from type
The upper surface of cavity segment (is evenly arranged on the same periphery of type chamber every 10~20mm is radially four symmetrical down
4 gas vents, the distance in longitudinally adjacent hole are 10~20mm), one is further preferably provided in the bottom centre of cavity portion
Gas vent；The diameter of the gas vent is preferably 1~2mm.The present invention is provided with base bleed hole and radial direction on molding copper mold
Gas vent, good exhaust effect make aluminium alloy have good mobility, are conducive to the oriented growth of crystal grain, reduce defect.At this
In invention, the internal diameter of plane is preferably 16mm bigger than the internal diameter of cavity portion on the riser part, plane on the riser part
Outer diameter it is preferably 3mm bigger than the internal diameter of plane on riser part.In the present invention, aluminium alloy is convenient for completely in the riser part
It pours and casts from cavity portion, avoid spilling outside aluminium alloy.The present invention does not require the angle of the riser part particularly, Neng Goubao
Card aluminium alloy is not outer to be spilt.
In the present invention, the taper cooling down device is truncated cone, and the lower end surface of the taper cooling down device is straight
Diameter is 40~100mm bigger than upper surface diameter.In the present invention, the taper cooling down device includes wall parts and cavity portion
Point；The center of taper cooling down device, the size of the chamber portion and molding copper mold type cavity portion is arranged in the chamber portion
The size divided matches；The wall parts are provided with gas vent.In application, molding copper mold assembly is cold in taper cooling
But in the chamber portion of device, and the gas vent for the gas vent and taper cooling down device wall parts for forming copper mold cavity portion connects
It is logical.In the present invention, the position of the gas vent of the taper cooling down device wall parts is according to molding copper mold cavity portion
Gas vent is configured, and can be corresponded and is connected to each gas vent of cavity portion.In the present invention, the taper
The upper surface diameter of cooling down device is preferably 3mm bigger than the outer diameter of the cavity portion；The taper cooling down device preferably compares
High 30~the 50mm of cavity portion.In the present invention, the taper cooling down device is down big up small, upper surface diameter and lower end
Face diameter can differ 40~100mm, and lower part cooling capacity is strong, and top cooling capacity opposing lower portions are weak, can be with self-assembling formation temperature
Spend gradient, temperature gradient needed for oriented growth can also be formed without coolant liquid.
In the present invention, the material of the molding copper mold and taper cooling down device is preferably all red copper.The present invention provides
Cooling copper mold because have rod radial air vent molding copper mold and the cooling down device with taper double action, there are biggish temperature
Spend gradient, aluminium alloy not only good fluidity, but also crystal grain energy oriented growth.Therefore, using cooling copper mold pair provided by the invention
Iron gallium alloy liquid is cooled down, can crystallographic orientation big L/D ratio iron gallium alloy bar, improve alloy magnetostriction coefficient, casting
Make performance and comprehensive mechanical performance；And cooling copper mold apparatus structure provided by the invention is simple.
The present invention provides the preparation methods of the Fe-Ga-Ce-B alloy bar material, comprising the following steps:
Iron, gallium, cerium and iron boron intermediate alloy are subjected to vacuum melting under protective atmosphere, alloy mother's ingot is obtained after solidification；
Progress gradient cooling in cooling copper mould described in above scheme will be flowed into after alloy mother ingot fusing, and obtain institute
State Fe-Ga-Ce-B alloy bar material.
Iron, gallium, cerium and iron boron intermediate alloy are carried out vacuum melting by the present invention under protective atmosphere.In the present invention, institute
State iron, gallium, cerium purity be preferably 99.99%；The iron boron intermediate alloy is preferably Fe-20B intermediate alloy.In the present invention
In, the iron, gallium, cerium and iron boron intermediate alloy quality according to each element in the Fe-Ga-Ce-B alloy bar material atomic ratio
It is configured.The present invention does not require the source of the iron, gallium, cerium and iron boron intermediate alloy particularly, ripe using this field
The source known, it is such as commercially available.
In the present invention, the protective atmosphere is preferably high-purity Ar gas.In the present invention, the vacuum melting is preferably in vacuum
It is carried out in induction melting furnace；The present invention does not require the vacuum induction melting furnace particularly, using well known in the art true
Empty induction melting furnace.In the present invention, the process of the vacuum melting preferably includes following steps:
(1) iron is added in vacuum induction melting furnace, and the furnace pressure of vacuum induction melting furnace is set；
(2) power on, iron is preheated；
(3) high current and gallium is added, cerium and iron boron intermediate alloy carry out vacuum melting；
(4) power supply, aluminium alloy furnace cooling, the Fe-Ga-Ce-B alloy mother's ingot solidified are closed.
In the present invention, the furnace pressure of the vacuum induction melting furnace is preferably smaller than 0.05Pa.In the present invention, described
The setting up procedure of furnace pressure specifically: Fe is placed in the non-porous silica crucible in bottom, crucible is then placed in the vacuum
In induction coil in induction melting furnace, and gallium, cerium and iron gallium intermediate alloy are placed in feeding chamber, lead to recirculated cooling water, closed
Fire door first sequentially opens vacuum mechanical pump, lobe pump for vacuum induction melting furnace and is evacuated to 1 × 102Pa hereinafter, open expansion again
It dissipates pump and vacuum induction melting furnace is evacuated to 10-2Pa or less；It is passed through high-purity Ar gas to furnace pressure later and is less than 0.05Pa.
After range needed for the present invention preferably meets in the furnace pressure of the vacuum induction melting furnace, it is molten to connect vacuum induction
The power supply of furnace.In the present invention, the size of current by iron preheating is preferably 500A；The time of the preheating is preferably
2min。
After preheating, it is 1350~1450A that the present invention, which preferably increases the electric current of the vacuum induction melting furnace, and is added
Gallium, cerium and iron boron intermediate alloy start to carry out vacuum melting.In the present invention, the addition of the gallium, cerium and iron boron intermediate alloy
Sequence is preferably are as follows: after iron fusing 1/3~1/2, iron boron intermediate alloy is added in the silica crucible non-porous to the bottom equipped with iron；
Gallium and cerium are completely melt and then sequentially added to iron.
The present invention is preferably finished in gallium and cerium addition, closes power supply after continuing 10~40s of heating.After closing power supply, alloy
Liquid furnace cooling, the Fe-Ga-Ce-B alloy mother's ingot solidified.
In the present invention, the vacuum melting preferably repeats 3~4 times, i.e., by the Fe-Ga- of the obtained solidification
Ce-B alloy mother's ingot, which is again placed in vacuum induction melting furnace, carries out remelting repeatedly, the process of remelting specifically:
(a) Fe-Ga-Ce-B alloy mother's ingot of the solidification is placed in vacuum induction melting furnace, and vacuum induction is set
The furnace pressure of smelting furnace；
(b) power on, high current, vacuum melting is carried out to Fe-Ga-Ce-B alloy mother's ingot；
(c) power supply, aluminium alloy furnace cooling, the Fe-Ga-Ce-B alloy mother's ingot solidified again are closed.
In the present invention, the process and condition of setting vacuum induction melting furnace furnace pressure are same as walking in the step (a)
Suddenly (1), the size of step (b) electric current are same as step (3), and details are not described herein.
After obtaining Fe-Ga-Ce-B alloy mother's ingot, the alloy mother ingot is melted and is flowed into described in above scheme by the present invention
It is cooling that gradient is carried out in cooling copper mould, obtains the Fe-Ga-Ce-B alloy bar material.In the present invention, the alloy mother ingot is molten
The process of change specifically: take out the alloy mother ingot from the non-porous silica crucible in bottom, then to put it into bottom porose
In silica crucible；Then by the porose silica crucible in bottom as in vacuum induction melting furnace, according to the side step (a)~(b)
Method carries out vacuum melting until alloy mother ingot fusing, keeps the temperature 5~10s.After alloy mother ingot fusing, obtained aluminium alloy
From being rapidly flowed into the cooling copper mould in the aperture of silica crucible bottom, gradient cooling is carried out in cooling copper mould,
Obtain Fe-Ga-Ce-B alloy bar material.
The present invention provides the preparation method of Fe-Ga-Ce-B alloy bar material described above, preparation methods provided by the invention
The Magnetostriction and comprehensive mechanical performance of alloy can be effectively improved, scaling loss amount is small, alloy surface is smooth, ingredient is uniform, solution
The big L/D ratio Fe-Ga alloy pencil rod Magnetostriction for the preparation method preparation for having determined traditional is not high, casting character is not good enough
The disadvantages of.
Below with reference to embodiment to a kind of Fe-Ga-Ce-B alloy bar material provided by the invention and preparation method thereof and a kind of
Cooling copper mould is described in detail, but they cannot be interpreted as limiting the scope of the present invention.
Embodiment 1
(1) Fe, Ga, Ce and Fe-20B intermediate alloy powder that purity is 99.99% is selected to press Fe81.2Ga17Ce0.8B1
The preparation of (atomic ratio) target component gets out various raw material.
(2) high-purity Fe is placed in the non-porous silica crucible in bottom, then crucible is placed in the induction coil in vacuum drying oven,
And high-purity Ga, Ce and Fe-20B intermediate alloy is placed in feeding chamber, lead to recirculated cooling water, closes fire door, first sequentially open
Vacuum drying oven is evacuated to 1 × 10 by vacuum mechanical pump, lobe pump2Vacuum drying oven is evacuated to 10 hereinafter, opening diffusion pump again by Pa-2Pa with
Under；It is passed through high-purity Ar gas to furnace pressure later and is less than 0.05Pa；Then power on, using the electric current of 500A by silica crucible
2min is preheated with high-purity Fe, size of current is added into 1400A later；After pure Fe fusing 1/3~1/2, rotation material pinch first will
Intermediate alloy Fe-20B is added in crucible；After being completely melt to pure Fe, first pure Ga is added in crucible, rare earth is then added
Ce closes power supply after heating 10~40s.
(3) solidification Fe-Ga-Ce-B alloy remelting 4 times repeatedly for obtaining step (2).
(4) volume after solidification that step (3) obtains there is the Fe-Ga-Ce-B alloy mother ingot that shrinks to a certain degree from bottom
It takes out, then is put it into the porose silica crucible in bottom in non-porous silica crucible, then crucible is placed in vacuum drying oven
In induction coil, lead to recirculated cooling water again, closes fire door, vacuum drying oven is evacuated to 1 first with vacuum mechanical pump, lobe pump ×
102Pa is hereinafter, be evacuated to 10 for vacuum drying oven with diffusion pump again-2Pa is less than hereinafter, being passed through high-purity Ar gas to furnace pressure later
Then 0.05Pa powers on, size of current 1400A, after alloy melting, maintains electric current 5~10 seconds, aluminium alloy is from quartz
It is quickly flowed into the aperture of crucible bottom in the cooling copper mould of gradient, obtains Fe after cooling81.2Ga17Ce0.8B1Alloy bar material.
The structure of cooling copper mould is as depicted in figs. 1 and 2, by the molding copper mold with gas vent and taper cooling down device group
At:
Molding copper mold is process by red copper, and the internal diameter (D1) of molding copper mold cavity portion is 6mm, and interior height (L1) is
80mm, outer diameter (D2) are 9mm, and bottom wall thickness (L2) is 5mm；It is vented bore dia 1.2mm, from upper surface down every 20mm along diameter
To symmetrical four, bottom centre is distributed 1；
Taper cooling down device is also process by red copper, is truncated cone, down big up small, the diameter (D3) of upper surface is
12mm, the diameter (D6) of lower end surface are 92mm, and height (L3) is 135mm.
The Fe that the present embodiment is cast81.2Ga17Ce0.8B1Alloy bar material is having a size of Φ 6mm × 80mm, pictorial diagram such as Fig. 3 institute
Show, Fe81.2Ga17Ce0.8B1The surface of alloy bar material is relatively smooth, without obvious casting flaw.
By the Fe of the Φ 6mm × 80mm to have cast81.2Ga17Ce0.8B1Alloy bar material cuts off both ends, using GB/T13992-
The method of 1992 " strain ga(u)ges " carries out measuring magnetoconstriction performance, as a result as shown in figure 4, measuring maximum magnetostriction value system
Number 370 × 10-6。
Embodiment 2
(1) Fe, Ga, Ce and Fe-20B intermediate alloy powder that purity is 99.99% is selected to press Fe79.2Ga19Ce0.6B1.2
The preparation of (atomic ratio) target component gets out various raw material.
(2) high-purity Fe is placed in the non-porous silica crucible in bottom, then crucible is placed in the induction coil in vacuum drying oven,
And high-purity Ga, Ce and Fe-20B intermediate alloy is placed in feeding chamber, lead to recirculated cooling water, closes fire door, first sequentially open
Vacuum drying oven is evacuated to 1 × 10 by vacuum mechanical pump, lobe pump2Vacuum drying oven is evacuated to 10 hereinafter, opening diffusion pump again by Pa-2Pa with
Under；It is passed through high-purity Ar gas to furnace pressure later and is less than 0.05Pa；Then power on, using the electric current of 500A by silica crucible
2min is preheated with high-purity Fe, size of current is added into 1350A later；After pure Fe fusing 1/3~1/2, rotation material pinch first will
Intermediate alloy Fe-20B is added in crucible；After being completely melt to pure Fe, first pure Ga is added in crucible, rare earth is then added
Ce closes power supply after heating 10~40s.
(3) solidification Fe-Ga-Ce-B alloy remelting 3 times repeatedly for obtaining step (2).
(4) volume after solidification that step (3) obtains there is the Fe-Ga-Ce-B alloy mother ingot that shrinks to a certain degree from bottom
It takes out, then is put it into the porose silica crucible in bottom in non-porous silica crucible, then crucible is placed in vacuum drying oven
In induction coil, lead to recirculated cooling water again, closes fire door, vacuum drying oven is evacuated to 1 first with vacuum mechanical pump, lobe pump ×
102Pa is hereinafter, be evacuated to 10 for vacuum drying oven with diffusion pump again-2Pa is less than hereinafter, being passed through high-purity Ar gas to furnace pressure later
Then 0.05Pa powers on, size of current 1350A, after alloy melting, maintains electric current 5~10 seconds, aluminium alloy is from quartz
It is quickly flowed into the aperture of crucible bottom in the cooling copper mould of gradient, obtains Fe after cooling79.2Ga19Ce0.6B1.2Alloy bar material.
The structure of cooling copper mould is as depicted in figs. 1 and 2, by the molding copper mold with gas vent and taper cooling down device group
At；
Molding copper mold is process by red copper, and the internal diameter (D1) of molding copper mold cavity portion is 8mm, and interior height (L1) is
75mm, outer diameter (D2) are 11mm, and bottom wall thickness (L2) is 5mm；It is vented bore dia 1.5mm, from upper surface down every the edge 15mm
Radial symmetric is distributed four, and bottom centre is distributed 1；
Taper cooling down device is also process by red copper, is truncated cone, down big up small, the diameter (D3) of upper surface is
14mm, the diameter (D6) of lower end surface are 114mm, and height (L3) is 130mm.
The Fe that the present embodiment is cast79.2Ga19Ce0.6B1.2Alloy bar material is having a size of Φ 8mm × 75mm, surface more light
It is sliding, without obvious casting flaw.By the Fe of the Φ 8mm × 75mm to have cast79.2Ga19Ce0.6B1.2Alloy bar material cuts off double headed roller and lacks
End is fallen into, measuring magnetoconstriction performance is carried out using the method for GB/T13992-1992 " strain ga(u)ge ", as a result such as Fig. 4 institute
Show, measuring maximum magnetostriction value coefficient is 285 × 10-6。
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of Fe-Ga-Ce-B alloy bar material, which is characterized in that the chemical composition of the Fe-Ga-Ce-B alloy bar material is
Fe100-(x+y+z)GaxCeyBz, wherein x=17~19, y=0.2~1.5, z=0.8~1.2；The Fe-Ga-Ce-B alloy bar material
Draw ratio be 7~14.
2. a kind of cooling copper mould, which is characterized in that including molding copper mold and taper cooling down device；
The molding copper mold includes cavity portion and riser part；The cavity portion is provided with gas vent；
The taper cooling down device is truncated cone, and the lower end surface diameter of the taper cooling down device is bigger than upper surface diameter
40~100mm；The taper cooling down device includes wall parts and chamber portion；The chamber portion setting cools down in taper
The center of cooler, the size of the chamber portion and the size of molding copper mold cavity portion match；The wall parts are set
It is equipped with gas vent.
3. cooling copper mould according to claim 2, which is characterized in that the cavity portion internal diameter of the molding copper mold is 3
~10mm, outer diameter is 3mm bigger than internal diameter, and bottom wall thickness is 5mm.
4. cooling copper mould according to claim 2 or 3, which is characterized in that the upper surface of the taper cooling down device
Diameter is 3mm bigger than the outer diameter of the cavity portion of the molding copper mold；Type of the taper cooling down device than the molding copper mold
High 30~the 50mm of cavity segment.
5. cooling copper mould according to claim 2, which is characterized in that it is described molding copper mold cavity portion gas vent from
The upper surface of cavity portion is four radially symmetrical every 10~20mm down, also sets up in the bottom centre of cavity portion
There is a gas vent；
The diameter of the gas vent is 1~2mm.
6. cooling copper mould according to claim 2, which is characterized in that the molding copper mold and taper cooling down device
Material is red copper.
7. the preparation method of Fe-Ga-Ce-B alloy bar material described in claim 1, which comprises the following steps:
Iron, gallium, cerium and iron boron intermediate alloy are subjected to vacuum melting under protective atmosphere, alloy mother's ingot is obtained after solidification；
Will the alloy mother ingot fusing after flow into cooling copper mould described in claim 2~6 any one carry out gradient it is cold
But, the Fe-Ga-Ce-B alloy bar material is obtained.
8. preparation method according to claim 7, which is characterized in that the vacuum melting in vacuum induction melting furnace into
Row；The furnace pressure of the vacuum induction melting furnace is less than 0.05Pa；The electric current of the vacuum induction melting furnace be 1350~
1450A。
9. preparation method according to claim 7, which is characterized in that during vacuum melting, the iron, gallium, cerium and
The addition sequence of iron boron intermediate alloy are as follows: iron is first added, after iron fusing 1/3~1/2, iron boron intermediate alloy is added；It is complete to iron
Running down and then sequentially add gallium and cerium.
10. preparation method according to claim 7, which is characterized in that the vacuum melting repeats 3~4 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910682379.1A CN110218934B (en) | 2019-07-26 | 2019-07-26 | Fe-Ga-Ce-B alloy bar and preparation method thereof and cooling copper die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910682379.1A CN110218934B (en) | 2019-07-26 | 2019-07-26 | Fe-Ga-Ce-B alloy bar and preparation method thereof and cooling copper die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110218934A true CN110218934A (en) | 2019-09-10 |
| CN110218934B CN110218934B (en) | 2020-06-09 |
Family
ID=67812648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910682379.1A Expired - Fee Related CN110218934B (en) | 2019-07-26 | 2019-07-26 | Fe-Ga-Ce-B alloy bar and preparation method thereof and cooling copper die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110218934B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110976806A (en) * | 2019-11-22 | 2020-04-10 | 中国航发西安动力控制科技有限公司 | Casting method of thin-wall aluminum alloy casting |
| CN113909455A (en) * | 2021-09-24 | 2022-01-11 | 北京科技大学 | Device and method for preparing sub-rapid solidification alloy in high flux |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3667533A (en) * | 1970-04-28 | 1972-06-06 | United Aircraft Corp | Making directionally solidified castings |
| CN1195609A (en) * | 1996-12-13 | 1998-10-14 | 庄臣及庄臣医药有限公司 | Thermal gradient beveling of catheters |
| CN101262039A (en) * | 2007-03-05 | 2008-09-10 | 有研稀土新材料股份有限公司 | Fe-Ga base magnetism driven elastic silk and part using this material |
| CN201632629U (en) * | 2010-01-30 | 2010-11-17 | 何灿东 | Spreader |
| CN102176507A (en) * | 2011-03-15 | 2011-09-07 | 北京科技大学 | Preparation method of FeGaYB lamellate magnetostriction material |
| CN103143679A (en) * | 2013-03-28 | 2013-06-12 | 南昌工程学院 | Strong cold casting copper mold for fabricating giant magnetostictive alloy disc |
| CN103170607A (en) * | 2013-03-28 | 2013-06-26 | 南昌工程学院 | Cast copper mould used for manufacturing giant magnetostrictive alloy bars |
| CN108687314A (en) * | 2018-05-02 | 2018-10-23 | 西安理工大学 | A kind of electric arc melting droplet casting water cooling assembling die |
-
2019
- 2019-07-26 CN CN201910682379.1A patent/CN110218934B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3667533A (en) * | 1970-04-28 | 1972-06-06 | United Aircraft Corp | Making directionally solidified castings |
| CN1195609A (en) * | 1996-12-13 | 1998-10-14 | 庄臣及庄臣医药有限公司 | Thermal gradient beveling of catheters |
| CN101262039A (en) * | 2007-03-05 | 2008-09-10 | 有研稀土新材料股份有限公司 | Fe-Ga base magnetism driven elastic silk and part using this material |
| CN201632629U (en) * | 2010-01-30 | 2010-11-17 | 何灿东 | Spreader |
| CN102176507A (en) * | 2011-03-15 | 2011-09-07 | 北京科技大学 | Preparation method of FeGaYB lamellate magnetostriction material |
| CN103143679A (en) * | 2013-03-28 | 2013-06-12 | 南昌工程学院 | Strong cold casting copper mold for fabricating giant magnetostictive alloy disc |
| CN103170607A (en) * | 2013-03-28 | 2013-06-26 | 南昌工程学院 | Cast copper mould used for manufacturing giant magnetostrictive alloy bars |
| CN108687314A (en) * | 2018-05-02 | 2018-10-23 | 西安理工大学 | A kind of electric arc melting droplet casting water cooling assembling die |
Non-Patent Citations (2)
| Title |
|---|
| SUOK-MIN NA和ALISON B. FLATAU: "Effect of Boron Addition on Magnetostrictive and Mechanical Properties in Rolled Polycrystalline Fe-18.7%Ga Alloy", 《MATERIALS RESEARCH SOCIETY》 * |
| ZHANQUAN YAO等: "Influences of rare earth element Ce-doping and melt-spinning on microstructure and magnetostriction of Fe83Ga17 alloy", 《JOURNAL OF ALLOYS AND COMPOUNDS》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110976806A (en) * | 2019-11-22 | 2020-04-10 | 中国航发西安动力控制科技有限公司 | Casting method of thin-wall aluminum alloy casting |
| CN113909455A (en) * | 2021-09-24 | 2022-01-11 | 北京科技大学 | Device and method for preparing sub-rapid solidification alloy in high flux |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110218934B (en) | 2020-06-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10279391B2 (en) | Magnetic phase-transformation material | |
| CN1354804A (en) | Nickel-based metallic material and method for producing same | |
| TW200416291A (en) | Tantalum modified amorphous alloy | |
| CN106756372B (en) | A kind of high-performance aluminizing-preparation method of rare earth alloy and its product of preparation | |
| CN111041256B (en) | Preparation method of vacuum induction melting CuTi alloy material | |
| TW200409823A (en) | Method and device for controlling solidification of molten alloy in induction furnace with water-cooled copper crucible | |
| CN110218934A (en) | A kind of Fe-Ga-Ce-B alloy bar material and preparation method thereof and a kind of cooling copper mould | |
| US11655529B2 (en) | Zr-based amorphous alloy and manufacturing method thereof | |
| CN110951946B (en) | Heat treatment process of low-density steel and preparation method thereof | |
| CN106244848B (en) | The copper-based glass mold material of microalloying non-ferrous metal and its manufacturing method | |
| CN107475561A (en) | High ferro acid bronze alloy glass mold material and preparation method thereof | |
| CN116287807A (en) | Preparation method of short-process alloy forging | |
| CN103184358A (en) | Reinforcing and toughening method for magnesium aluminium intermetallic compound | |
| JP6827461B2 (en) | Molybdenum crucible | |
| CN108220636B (en) | Preparation method of beryllium-silicon alloy | |
| CN109468548A (en) | A kind of width supercooling liquid phase region zirconium-base amorphous alloy | |
| CN112974740B (en) | Vacuum induction melting casting process and ingot mold device for GH4151 alloy | |
| CN114293159A (en) | Preparation method of nickel-based alloy target material | |
| CN109475931A (en) | The cooling smelting furnace of directional solidification and the cooling means using this smelting furnace | |
| CN107199321A (en) | A kind of time-varying control semi-solid-state shaping technique | |
| CN1971781B (en) | Preparing method of block amorphous ring type magnetic core | |
| CN109457166B (en) | Preparation and thermoplastic forming method of iron-based bulk amorphous alloy | |
| CN108085537A (en) | The copper alloy glass mold production method of control molding facial disfigurement | |
| JP5453480B2 (en) | Cast iron billet for thixocasting and manufacturing method thereof | |
| CN114752796B (en) | Preparation method of casting blank for copper-silver alloy wire suitable for ultra-fine drawing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200609 Termination date: 20210726 |