CN107739958A - A kind of high-entropy alloy containing eutectic structure and preparation method thereof - Google Patents
A kind of high-entropy alloy containing eutectic structure and preparation method thereof Download PDFInfo
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- CN107739958A CN107739958A CN201710999232.6A CN201710999232A CN107739958A CN 107739958 A CN107739958 A CN 107739958A CN 201710999232 A CN201710999232 A CN 201710999232A CN 107739958 A CN107739958 A CN 107739958A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C30/00—Alloys containing less than 50% by weight of each constituent
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Abstract
The invention discloses a kind of high-entropy alloy containing eutectic structure, including：By FCC phases and Cr9Mo21Ni20The CoCrFeNiMo of the lamellar eutectic structure formed0.6~1.2；Wherein, CoCrFeNiMo0.6Alloy is organized as hypoeutectic structure, CoCrFeNiMo0.8Alloy is organized as eutectic structure, CoCrFeNiMo and CoCrFeNiMo1.2Alloy is organized as hypereutectic tissue.Meanwhile the invention also discloses a kind of preparation method of the high-entropy alloy containing eutectic structure, comprise the following steps：Step 1: weighing raw material Co, Cr, Fe, Ni and Mo elemental metals, and it is 1 according to molar ratio computing：1：1：1：0.6~1.2；Step 2: the elemental metals are put into vacuumize process after smelting furnace and are filled with protection gas；Step 3: remove the alloy after elemental metals described in energization melting after residual oxygen are melted；Step 4: the alloy is cooled down to obtain the high-entropy alloy；Wherein, the elemental metals are placed sequentially in smelting furnace from the bottom up from low to high according to fusing point.
Description
Technical field
The present invention relates to field of alloy material, and in particular to a kind of to contain the high-entropy alloy of eutectic structure and its preparation side
Method.
Background technology
Since high-entropy alloy is mentioned so far first, obtain increasing concern also obtained substantial amounts of research into
Fruit.As high temperature coatings, super high-entropy alloy, the low-density high-entropy alloy that can apply to aviation field, radiation hardness material,
Low temperature structure material etc..But this metal material of high-entropy alloy is primarily due to such there is presently no being widely used
Either alloy often only high intensity, or only high-ductility, it is difficult to make it possess the two characteristics, and component segregation simultaneously
It is other two big difficulties of the pendulum before high-entropy alloy application surface with castability difference.
The eutectic alloy being used widely in conventional metals field has lot of advantages：1) tissue of near-equilibrium state can
To sustain the temperature of up to eutectic point；2) low phase boundary energy；3) organize controllable；4) high fracture strength；5) the defects of stable, ties
Structure；6) good Properties of High Temperature Creep；7) sheet in good order of arranging or ROD EUTECTIC tissue can form In-situ reaction
Material；Simultaneously as eutectic reaction is an isothermal transformation, so solidification temperature range just is not present, it is so also just same
When reduce segregation and shrinkage cavity.
If it is possible to make FCC phases (Face Centered Cubic, face-centred cubic structure) and another hard
The eutectic high-entropy alloy being combined, then this alloy can just possess excellent mechanical performance and casting character simultaneously；This is with regard to energy
It is enough to help to clear away obstruction of the high-entropy alloy encountered in industrial processes；Then, scholar proposes a kind of new high entropy
Alloy concept-eutectic high-entropy alloy.At present, it has been reported that eutectic high-entropy alloy composition have AlCoCrFeNi2.1、
CoFeNi2V0.5Nb7.5、CoFeNi1.4VMo、CoFeNiVMo0.6、Al1.2CrCuFeNi2Deng.
The content of the invention
The present invention has designed and developed a kind of high-entropy alloy containing eutectic structure, and goal of the invention of the invention is to pass through adjustment
The content of Mo elements and then the institutional framework for adjusting high-entropy alloy, and then the mechanical performance of alloy is adjusted, improve high-entropy alloy
Mobility and castability.
The present invention has designed and developed a kind of preparation method of the high-entropy alloy containing eutectic structure, goal of the invention of the invention
It is to provide a kind of preparation method for preparing high-entropy alloy system containing eutectic structure, that there is excellent comprehensive performance.
Technical scheme provided by the invention is：
A kind of high-entropy alloy containing eutectic structure, including：
Co：It is calculated in molar ratio as 1,
Cr：It is calculated in molar ratio as 1,
Fe：It is calculated in molar ratio as 1,
Ni：It is calculated in molar ratio as 1,
Mo：It is calculated in molar ratio as 0.6~1.2.
Preferably, including：
Co：It is calculated in molar ratio as 1,
Cr：It is calculated in molar ratio as 1,
Fe：It is calculated in molar ratio as 1,
Ni：It is calculated in molar ratio as 1,
Mo：It is calculated in molar ratio as 0.6.
Preferably, including：
Co：It is calculated in molar ratio as 1,
Cr：It is calculated in molar ratio as 1,
Fe：It is calculated in molar ratio as 1,
Ni：It is calculated in molar ratio as 1,
Mo：It is calculated in molar ratio as 1.2.
Preferably, Co, Cr, Fe, Ni and Mo purity are all higher than 99.8%.
A kind of preparation method of the high-entropy alloy containing eutectic structure, comprises the following steps：
Step 1: weighing raw material Co, Cr, Fe, Ni and Mo elemental metals, and it is 1 according to molar ratio computing：1：1：1：0.6
~1.2；
Step 2: the elemental metals are put into vacuumize process after smelting furnace and are filled with protection gas；
Step 3: remove the alloy after elemental metals described in energization melting after residual oxygen are melted；
Step 4: the alloy is cooled down to obtain the high-entropy alloy；
Wherein, the elemental metals are placed sequentially in smelting furnace from the bottom up from low to high according to fusing point.
Preferably, in the step 1, raw material Co, Cr, Fe, Ni and Mo elemental metals are 1 according to molar ratio computing：1：
1：1：0.6；
In the step 1, raw material Co, Cr, Fe, Ni and Mo elemental metals are 1 according to molar ratio computing：1：1：1：0.8；
In the step 1, raw material Co, Cr, Fe, Ni and Mo elemental metals are 1 according to molar ratio computing：1：1：1：1；Or
Person
In the step 1, raw material Co, Cr, Fe, Ni and Mo elemental metals are 1 according to molar ratio computing：1：1：1：1.2.
Preferably, in the step 2, the protection gas is argon gas, and vacuum is 5 in the smelting furnace
×10-3The protection gas is filled with during Pa.
Preferably, in the step 3, removing residual oxygen includes：
The smelting furnace includes the first melting pond and the second melting pond；
Pure titanium ingot is added in the first melting pond, the elemental metals is added in the second melting pond, is entering
Pure titanium ingot described in energization melting is carried out to the first melting pond before elemental metals described in row energization melting, is remained for removing
Oxygen.
Preferably, in the step 3, the elemental metals energization melting is first drawn using 60~70A electric current
Arc, then electric current 60~120s of melting with 200~300A, obtain ingot casting；
By the ingot overturning, then electric current 60~120s of melting with 200~300A, and be repeated 6 times.
Preferably, in the step 3, pure titanium ingot described in energization melting is carried out to the first melting pond and uses 200
~300A electric current 60~120s of melting, and repeat 2~3 times.
Present invention beneficial effect possessed compared with prior art：
1st, preparation method technique simple and stable of the present invention, it is designed according to this invention and prepare containing eutectic structure
CoCrFeNiMoxHigh-entropy alloy system, and before and have not been reported；
2、CoCrFeNiMo0.6Alloy is organized as hypoeutectic structure, has excellent synthesis compression performance, compression strength
For 2062MPa, compression ratio 17.5%；CoCrFeNiMo0.8Alloy is organized as eutectic structure, has preferably comprehensive compress
Performance, compression strength 2240MPa, compression ratio 8.5%；CoCrFeNiMo and CoCrFeNiMo1.2Being organized as alloy is common
Crystalline substance tissue, has high intensity, high rigidity, but plasticity is poor；
3rd, the present invention can synthesize the CoCrFeNiMo with high intensity and high rigidity1.2High-entropy alloy, this alloy resist
Compressive Strength reaches 2382Mpa, and hardness reaches 762.8HV.
Brief description of the drawings
Fig. 1 is high-entropy alloy CoCrFeNiMo of the present inventionxXRD spectrum.
Fig. 2 is high-entropy alloy CoCrFeNiMo of the present invention0.6Stereoscan photograph.
Fig. 3 is high-entropy alloy CoCrFeNiMo of the present invention0.8Stereoscan photograph.
Fig. 4 is high-entropy alloy CoCrFeNiMo of the present invention stereoscan photograph.
Fig. 5 is high-entropy alloy CoCrFeNiMo of the present invention1.2Stereoscan photograph.
Fig. 6 is high-entropy alloy CoCrFeNiMo of the present invention0.6~1.2Load-deformation curve；(x=0.6；0.8；
1；1.2；).
Fig. 7 is high-entropy alloy CoCrFeNiMo of the present invention0.6~1.2Vickers hardness curve；(x=0.6；0.8；1；
1.2；).
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text
Word can be implemented according to this.
It there is no eutectic CoCrFeNiMo at presentxThe report of serial high-entropy alloy, the present invention is for high-entropy alloy fusing point height, stream
The present situation that dynamic property is poor, hardly possible is cast, intensity and plasticity can not coordinate very well, with reference to eutectic alloy theory and high-entropy alloy composition design
Theory, design and be prepared for containing high intensity, high rigidity, have excellent comprehensive performance, by FCC phases and Cr9Mo21Ni20Institute's group
Into lamellar eutectic structure CoCrFeNiMoxHigh-entropy alloy system, so as to solve high-entropy alloy fusing point height, mobility
The problem of difference, difficult casting；And can be by adjusting the content of Mo elements, and then the institutional framework of alloy is adjusted, so as to
The combination of intensity and plasticity is realized, there is huge application value in engineering.
Therefore, the invention provides a kind of high-entropy alloy containing eutectic structure, including：
Co：It is calculated in molar ratio as 1,
Cr：It is calculated in molar ratio as 1,
Fe：It is calculated in molar ratio as 1,
Ni：It is calculated in molar ratio as 1,
Mo：It is calculated in molar ratio as 0.6~1.2.
In another embodiment, including：
Co：It is calculated in molar ratio as 1,
Cr：It is calculated in molar ratio as 1,
Fe：It is calculated in molar ratio as 1,
Ni：It is calculated in molar ratio as 1,
Mo：It is calculated in molar ratio as 0.6.
In another embodiment, including：
Co：It is calculated in molar ratio as 1,
Cr：It is calculated in molar ratio as 1,
Fe：It is calculated in molar ratio as 1,
Ni：It is calculated in molar ratio as 1,
Mo：It is calculated in molar ratio as 0.8.
In another embodiment, including：
Co：It is calculated in molar ratio as 1,
Cr：It is calculated in molar ratio as 1,
Fe：It is calculated in molar ratio as 1,
Ni：It is calculated in molar ratio as 1,
Mo：It is calculated in molar ratio as 1.
In another embodiment, including：
Co：It is calculated in molar ratio as 1,
Cr：It is calculated in molar ratio as 1,
Fe：It is calculated in molar ratio as 1,
Ni：It is calculated in molar ratio as 1,
Mo：It is calculated in molar ratio as 1.2.
In another embodiment, Co, Cr, Fe, Ni and Mo purity are all higher than 99.8%.
Present invention also offers a kind of preparation method of the high-entropy alloy containing eutectic structure, comprise the following steps：
Step 1: weighing raw material Co, Cr, Fe, Ni and Mo elemental metals, and it is 1 according to molar ratio computing：1：1：1：0.6
~1.2；
Step 2: the elemental metals are put into vacuumize process after smelting furnace and are filled with protection gas；
Step 3: remove the alloy after elemental metals described in energization melting after residual oxygen are melted；
Step 4: the alloy is cooled down to obtain the high-entropy alloy；
Wherein, the elemental metals are placed sequentially in smelting furnace from the bottom up from low to high according to fusing point.
In another embodiment, in the step 1, raw material Co, Cr, Fe, Ni and Mo elemental metals are according to mol ratio
It is calculated as 1：1：1：1：0.6.
In another embodiment, in the step 1, raw material Co, Cr, Fe, Ni and Mo elemental metals are according to mol ratio
It is calculated as 1：1：1：1：0.8.
In another embodiment, in the step 1, raw material Co, Cr, Fe, Ni and Mo elemental metals are according to mol ratio
It is calculated as 1：1：1：1：1.
In another embodiment, in the step 1, raw material Co, Cr, Fe, Ni and Mo elemental metals are according to mol ratio
It is calculated as 1：1：1：1：1.2.
In another embodiment, in the step 2, the protection gas is argon gas, and true in the smelting furnace
Reciprocal of duty cycle is 5 × 10-3The protection gas is filled with during Pa.
In another embodiment, in the step 3, removing residual oxygen includes：
The smelting furnace includes the first melting pond and the second melting pond；
Pure titanium ingot is added in the first melting pond, the elemental metals is added in the second melting pond, is entering
Pure titanium ingot described in energization melting is carried out to the first melting pond before elemental metals described in row energization melting, is remained for removing
Oxygen.
In another embodiment, in the step 3, to the elemental metals energization melting first using 60~70A's
Current arc ignition, then electric current 60~120s of melting with 200~300A, obtain ingot casting；
By the ingot overturning, then electric current 60~120s of melting with 200~300A, and be repeated 6 times.
In another embodiment, in the step 3, pure titanium described in energization melting is carried out to the first melting pond
Ingot uses 200~300A electric current 60~120s of melting, and repeats 2~3 times.
The high-entropy alloy of the present invention is further described with reference to specific embodiment.
Embodiment 1
Stock
Prepare Co, Cr, Fe, Ni, Mo simple substance simple metal raw material, purity be more than 99.8%, and by larger bulk, sheet material,
Band, bar etc. are cut into less bulk easy to use, bar etc.；Raw material is weighed by equimolar ratio：Co：Cr：Fe：Ni：Mo
=1：1：1：1：0.6；
Melting
Raw metal gross mass is 25g after weighing, by load weighted raw metal WK- П type non-consumable vacuum melting furnaces
Melting is carried out, it is diameter 6mm cylinders that it, which inhales cast copper model cavity, has in water jacketed copper crucible and inhales cast copper die device and cast pump phase with inhaling
Even；Specifically comprise the following steps：
Step 1: pure titanium ingot is put into a melting pond of water cooled copper mould, then by the raw material Co, Cr weighed in stock,
Fe, Ni, Mo are put into another melting pond of water cooled copper mould, according to each material melting point height, by material melting point from low to high from
Under be up sequentially placed, bell is covered after Material Containment, tightens sample room knob；
It is 5 × 10 in vacuum Step 2: to melting stove evacuation-3The argon gas of 1 atmospheric pressure is filled with during Pa；
Step 3: step 2 is repeated 2 times；
Step 4: melt back titanium ingot 2 times~3 times, each melting 60s under conditions of melting electric current is 200A~300A
~120s, to remove residual oxygen；
Step 5: 60~70A current arc ignition, then high current is first used to be placed on into 200~300A melting steps one
Co, Cr, Fe, Ni, Mo material 60s~120s in another melting pond of water cooled copper mould, obtains ingot casting；
Step 6: the ingot casting obtained in step 5 is overturn, then in the condition that melting electric current is 200A~300A
Lower melting 60s~120s；
Step 7: step 6 is repeated 6 times, with uniform alloy composition；
Casting pump is inhaled Step 8: opening, by the alloy suction mold cavity of fusing, treats that mould cooling is taken out, obtains cylindric
Sample, just it is successfully prepared alloy bar.
Embodiment 2
Stock
Prepare Co, Cr, Fe, Ni, Mo simple substance simple metal raw material, purity be more than 99.8%, and by larger bulk, sheet material,
Band, bar etc. are cut into less bulk easy to use, bar etc.；Raw material is weighed by equimolar ratio：Co：Cr：Fe：Ni：Mo
=1：1：1：1：0.8；
Melting
Raw metal gross mass is 25g after weighing, by load weighted raw metal WK- П type non-consumable vacuum melting furnaces
Melting is carried out, it is diameter 6mm cylinders that it, which inhales cast copper model cavity, has in water jacketed copper crucible and inhales cast copper die device and cast pump phase with inhaling
Even；Specifically comprise the following steps：
Step 1: pure titanium ingot is put into a melting pond of water cooled copper mould, then by the raw material Co, Cr weighed in stock,
Fe, Ni, Mo are put into another melting pond of water cooled copper mould, according to each material melting point height, by material melting point from low to high from
Under be up sequentially placed, bell is covered after Material Containment, tightens sample room knob；
It is 5 × 10 in vacuum Step 2: to melting stove evacuation-3The argon gas of 1 atmospheric pressure is filled with during Pa；
Step 3: step 2 is repeated 2 times；
Step 4: melt back titanium ingot 2 times~3 times, each melting 60s under conditions of melting electric current is 200A~300A
~120s, to remove residual oxygen；
Step 5: 60~70A current arc ignition, then high current is first used to be placed on into 200~300A melting steps one
Co, Cr, Fe, Ni, Mo material 60s~120s in another melting pond of water cooled copper mould, obtains ingot casting；
Step 6: the ingot casting obtained in step 5 is overturn, then in the condition that melting electric current is 200A~300A
Lower melting 60s~120s；
Step 7: step 6 is repeated 6 times, with uniform alloy composition；
Casting pump is inhaled Step 8: opening, by the alloy suction mold cavity of fusing, treats that mould cooling is taken out, obtains cylindric
Sample, just it is successfully prepared alloy bar.
Embodiment 3
Stock
Prepare Co, Cr, Fe, Ni, Mo simple substance simple metal raw material, purity be more than 99.8%, and by larger bulk, sheet material,
Band, bar etc. are cut into less bulk easy to use, bar etc.；Raw material is weighed by equimolar ratio：Co：Cr：Fe：Ni：Mo
=1：1：1：1：1；
Melting
Raw metal gross mass is 25g after weighing, by load weighted raw metal WK- П type non-consumable vacuum melting furnaces
Melting is carried out, it is diameter 6mm cylinders that it, which inhales cast copper model cavity, has in water jacketed copper crucible and inhales cast copper die device and cast pump phase with inhaling
Even；Specifically comprise the following steps：
Step 1: pure titanium ingot is put into a melting pond of water cooled copper mould, then by the raw material Co, Cr weighed in stock,
Fe, Ni, Mo are put into another melting pond of water cooled copper mould, according to each material melting point height, by material melting point from low to high from
Under be up sequentially placed, bell is covered after Material Containment, tightens sample room knob；
It is 5 × 10 in vacuum Step 2: to melting stove evacuation-3The argon gas of 1 atmospheric pressure is filled with during Pa；
Step 3: step 2 is repeated 2 times；
Step 4: melt back titanium ingot 2 times~3 times, each melting 60s under conditions of melting electric current is 200A~300A
~120s, to remove residual oxygen；
Step 5: 60~70A current arc ignition, then high current is first used to be placed on into 200~300A melting steps one
Co, Cr, Fe, Ni, Mo material 60s~120s in another melting pond of water cooled copper mould, obtains ingot casting；
Step 6: the ingot casting obtained in step 5 is overturn, then in the condition that melting electric current is 200A~300A
Lower melting 60s~120s；
Step 7: step 6 is repeated 6 times, with uniform alloy composition；
Casting pump is inhaled Step 8: opening, by the alloy suction mold cavity of fusing, treats that mould cooling is taken out, obtains cylindric
Sample, just it is successfully prepared alloy bar.
Embodiment 4
Stock
Prepare Co, Cr, Fe, Ni, Mo simple substance simple metal raw material, purity be more than 99.8%, and by larger bulk, sheet material,
Band, bar etc. are cut into less bulk easy to use, bar etc.；Raw material is weighed by equimolar ratio：Co：Cr：Fe：Ni：Mo
=1：1：1：1：1.2；
Melting
Raw metal gross mass is 25g after weighing, by load weighted raw metal WK- П type non-consumable vacuum melting furnaces
Melting is carried out, it is diameter 6mm cylinders that it, which inhales cast copper model cavity, has in water jacketed copper crucible and inhales cast copper die device and cast pump phase with inhaling
Even；Specifically comprise the following steps：
Step 1: pure titanium ingot is put into a melting pond of water cooled copper mould, then by the raw material Co, Cr weighed in stock,
Fe, Ni, Mo are put into another melting pond of water cooled copper mould, according to each material melting point height, by material melting point from low to high from
Under be up sequentially placed, bell is covered after Material Containment, tightens sample room knob；
It is 5 × 10 in vacuum Step 2: to melting stove evacuation-3The argon gas of 1 atmospheric pressure is filled with during Pa；
Step 3: step 2 is repeated 2 times；
Step 4: melt back titanium ingot 2 times~3 times, each melting 60s under conditions of melting electric current is 200A~300A
~120s, to remove residual oxygen；
Step 5: 60~70A current arc ignition, then high current is first used to be placed on into 200~300A melting steps one
Co, Cr, Fe, Ni, Mo material 60s~120s in another melting pond of water cooled copper mould, obtains ingot casting；
Step 6: the ingot casting obtained in step 5 is overturn, then in the condition that melting electric current is 200A~300A
Lower melting 60s~120s；
Step 7: step 6 is repeated 6 times, with uniform alloy composition；
Casting pump is inhaled Step 8: opening, by the alloy suction mold cavity of fusing, treats that mould cooling is taken out, obtains cylindric
Sample, just it is successfully prepared alloy bar.
Experimental result
The present invention is by high-entropy alloy, with reference to eutectic solidification theory, designs and be prepared for CoCrFeNiMox high-entropy alloys
System；Wherein, alloying element Co, Cr, Fe, Ni, Mo in molar ratio 1：1：1：1：X (wherein, x=0.6,0.8,1.0,1.2) enter
Row proportioning, the high-entropy alloy as obtained by this proportioning has high intensity, high rigidity and excellent comprehensive mechanical property, such as the institute of Fig. 1~7
Show, embodiment 1~4 is tested, and CoCrFeNiMo0.6 alloys are organized as hypoeutectic structure, have excellent comprehensive pressure
Contracting performance, compression strength 2062MPa, compression ratio 17.5%；CoCrFeNiMo0.8 alloys are organized as eutectic structure, tool
There are preferably comprehensive compression performance, compression strength 2240MPa, compression ratio 8.5%；CoCrFeNiMo and CoCrFeNiMo1.2
Alloy is organized as hypereutectic tissue, has high intensity, high rigidity, but plasticity is poor；CoCrFeNiMo1.2High-entropy alloy, resistance to compression
Intensity reaches 2382Mpa, and hardness reaches 762.8HV；The organizational composition of alloy is controlled by adjusting the content of Mo elements in alloy, can
To obtain the perfect adaptation of intensity and plasticity, there is huge application value in engineering.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, it is of the invention and unlimited
In specific details and shown here as the legend with description.
Claims (10)
- A kind of 1. high-entropy alloy containing eutectic structure, it is characterised in that including：Co：It is calculated in molar ratio as 1,Cr：It is calculated in molar ratio as 1,Fe：It is calculated in molar ratio as 1,Ni：It is calculated in molar ratio as 1,Mo：It is calculated in molar ratio as 0.6~1.2.
- 2. the high-entropy alloy containing eutectic structure as claimed in claim 1, it is characterised in that including：Co：It is calculated in molar ratio as 1,Cr：It is calculated in molar ratio as 1,Fe：It is calculated in molar ratio as 1,Ni：It is calculated in molar ratio as 1,Mo：It is calculated in molar ratio as 0.6.
- 3. the high-entropy alloy containing eutectic structure as claimed in claim 1, it is characterised in that including：Co：It is calculated in molar ratio as 1,Cr：It is calculated in molar ratio as 1,Fe：It is calculated in molar ratio as 1,Ni：It is calculated in molar ratio as 1,Mo：It is calculated in molar ratio as 1.2.
- 4. the high-entropy alloy containing eutectic structure as claimed in claim 1, it is characterised in that Co, Cr, Fe, Ni and Mo purity It is all higher than 99.8%.
- 5. a kind of preparation method of the high-entropy alloy containing eutectic structure, it is characterised in that comprise the following steps：Step 1: weighing raw material Co, Cr, Fe, Ni and Mo elemental metals, and it is 1 according to molar ratio computing：1：1：1：0.6~ 1.2；Step 2: the elemental metals are put into vacuumize process after smelting furnace and are filled with protection gas；Step 3: remove the alloy after elemental metals described in energization melting after residual oxygen are melted；Step 4: the alloy is cooled down to obtain the high-entropy alloy；Wherein, the elemental metals are placed sequentially in smelting furnace from the bottom up from low to high according to fusing point.
- 6. the preparation method of the high-entropy alloy containing eutectic structure as claimed in claim 5, it is characterised in that in the step In one, raw material Co, Cr, Fe, Ni and Mo elemental metals are 1 according to molar ratio computing：1：1：1：0.6；In the step 1, raw material Co, Cr, Fe, Ni and Mo elemental metals are 1 according to molar ratio computing：1：1：1：0.8；In the step 1, raw material Co, Cr, Fe, Ni and Mo elemental metals are 1 according to molar ratio computing：1：1：1：1；OrIn the step 1, raw material Co, Cr, Fe, Ni and Mo elemental metals are 1 according to molar ratio computing：1：1：1：1.2.
- 7. the preparation method of the high-entropy alloy containing eutectic structure as claimed in claim 5, it is characterised in that in the step In two, the protection gas is argon gas, and vacuum is 5 × 10 in the smelting furnace-3The protection gas is filled with during Pa.
- 8. the preparation method of the high-entropy alloy containing eutectic structure as claimed in claims 6 or 7, it is characterised in that described In step 3, removing residual oxygen includes：The smelting furnace includes the first melting pond and the second melting pond；Pure titanium ingot is added in the first melting pond, the elemental metals is added in the second melting pond, is being led to Pure titanium ingot described in energization melting is carried out to the first melting pond before elemental metals described in electric smelting, oxygen is remained for removing Gas.
- 9. the preparation method of the high-entropy alloy containing eutectic structure as claimed in claim 8, it is characterised in that in the step In three, 60~70A current arc ignition, then the electric current melting 60 with 200~300A are first used the elemental metals energization melting ~120s, obtains ingot casting；By the ingot overturning, then electric current 60~120s of melting with 200~300A, and be repeated 6 times.
- 10. the preparation method of the high-entropy alloy containing eutectic structure as claimed in claim 8, it is characterised in that in the step In rapid three, electric current 60~120s of melting that pure titanium ingot described in energization melting uses 200~300A is carried out to the first melting pond, And repeat 2~3 times.
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Cited By (14)
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| CN108588704A (en) * | 2018-03-29 | 2018-09-28 | 中南大学 | A method of it is quickly cooled down using fixed point input energy and prepares high-entropy alloy/diamond composite film or coating |
| CN108950349A (en) * | 2018-07-27 | 2018-12-07 | 西安理工大学 | A kind of CoFeNi2VZrx eutectic high-entropy alloy and preparation method thereof |
| CN109266944A (en) * | 2018-11-08 | 2019-01-25 | 辽宁工业大学 | A kind of FeCoCrNiMn high-entropy alloy and preparation method thereof |
| CN109702199A (en) * | 2019-02-26 | 2019-05-03 | 中国科学院兰州化学物理研究所 | A kind of high-entropy alloy-base self-lubricating oily bearing material |
| CN110106428A (en) * | 2019-05-27 | 2019-08-09 | 河北工业大学 | One kind having band-like precipitated phase high-entropy alloy and preparation method thereof |
| CN110684978A (en) * | 2019-10-25 | 2020-01-14 | 北京科技大学 | High-entropy alloy coating and preparation method thereof |
| WO2020085697A1 (en) * | 2018-10-24 | 2020-04-30 | 포항공과대학교 산학협력단 | Medium-entropy alloy having high strength and high toughness, and manufacturing method therefor |
| CN111321336A (en) * | 2020-04-08 | 2020-06-23 | 辽宁工业大学 | Eutectic high-entropy alloy with low notch sensitivity and preparation method thereof |
| CN111763868A (en) * | 2020-06-29 | 2020-10-13 | 安徽盛赛再制造科技有限公司 | High-entropy alloy powder for additive manufacturing and preparation method thereof |
| CN112981208A (en) * | 2021-02-03 | 2021-06-18 | 上海交通大学 | Light refractory high-temperature-resistant eutectic high-entropy alloy and preparation method thereof |
| CN113846345A (en) * | 2021-09-18 | 2021-12-28 | 上海交通大学 | Electrocatalytic hydrogen evolution alloy and preparation method thereof |
| CN114059065A (en) * | 2021-11-18 | 2022-02-18 | 江苏科技大学 | Argon arc cladding high-entropy alloy coating and preparation method and application thereof |
| CN115323238A (en) * | 2022-07-06 | 2022-11-11 | 太原理工大学 | Eutectic high-entropy alloy with disordered face-centered cubic and disordered body-centered cubic structures |
| CN115786795A (en) * | 2022-11-24 | 2023-03-14 | 陕西科技大学 | CrFe 2 Ni 2 Nb x M y Eutectic medium entropy alloy and preparation method thereof |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108588704A (en) * | 2018-03-29 | 2018-09-28 | 中南大学 | A method of it is quickly cooled down using fixed point input energy and prepares high-entropy alloy/diamond composite film or coating |
| CN108950349A (en) * | 2018-07-27 | 2018-12-07 | 西安理工大学 | A kind of CoFeNi2VZrx eutectic high-entropy alloy and preparation method thereof |
| CN108950349B (en) * | 2018-07-27 | 2020-06-26 | 西安理工大学 | CoFeNi2VZrx eutectic high-entropy alloy and preparation method thereof |
| WO2020085697A1 (en) * | 2018-10-24 | 2020-04-30 | 포항공과대학교 산학협력단 | Medium-entropy alloy having high strength and high toughness, and manufacturing method therefor |
| CN109266944A (en) * | 2018-11-08 | 2019-01-25 | 辽宁工业大学 | A kind of FeCoCrNiMn high-entropy alloy and preparation method thereof |
| CN109702199A (en) * | 2019-02-26 | 2019-05-03 | 中国科学院兰州化学物理研究所 | A kind of high-entropy alloy-base self-lubricating oily bearing material |
| CN110106428A (en) * | 2019-05-27 | 2019-08-09 | 河北工业大学 | One kind having band-like precipitated phase high-entropy alloy and preparation method thereof |
| CN110684978A (en) * | 2019-10-25 | 2020-01-14 | 北京科技大学 | High-entropy alloy coating and preparation method thereof |
| CN111321336A (en) * | 2020-04-08 | 2020-06-23 | 辽宁工业大学 | Eutectic high-entropy alloy with low notch sensitivity and preparation method thereof |
| CN111763868A (en) * | 2020-06-29 | 2020-10-13 | 安徽盛赛再制造科技有限公司 | High-entropy alloy powder for additive manufacturing and preparation method thereof |
| CN112981208A (en) * | 2021-02-03 | 2021-06-18 | 上海交通大学 | Light refractory high-temperature-resistant eutectic high-entropy alloy and preparation method thereof |
| CN112981208B (en) * | 2021-02-03 | 2022-04-26 | 上海交通大学 | Light refractory high-temperature-resistant eutectic high-entropy alloy and preparation method thereof |
| CN113846345A (en) * | 2021-09-18 | 2021-12-28 | 上海交通大学 | Electrocatalytic hydrogen evolution alloy and preparation method thereof |
| CN113846345B (en) * | 2021-09-18 | 2023-03-14 | 上海交通大学 | Electrocatalytic hydrogen evolution alloy and preparation method thereof |
| CN114059065A (en) * | 2021-11-18 | 2022-02-18 | 江苏科技大学 | Argon arc cladding high-entropy alloy coating and preparation method and application thereof |
| CN115323238A (en) * | 2022-07-06 | 2022-11-11 | 太原理工大学 | Eutectic high-entropy alloy with disordered face-centered cubic and disordered body-centered cubic structures |
| CN115786795A (en) * | 2022-11-24 | 2023-03-14 | 陕西科技大学 | CrFe 2 Ni 2 Nb x M y Eutectic medium entropy alloy and preparation method thereof |
| CN115786795B (en) * | 2022-11-24 | 2024-01-26 | 陕西科技大学 | CrFe 2 Ni 2 Nb x M y Eutectic medium-entropy alloy and preparation method thereof |
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