CN106222517B - A kind of TiCuAlCrMoNb high-entropy alloys and preparation method thereof - Google Patents
A kind of TiCuAlCrMoNb high-entropy alloys and preparation method thereof Download PDFInfo
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Abstract
A kind of TiCuAlCrMoNb high-entropy alloys and preparation method thereof, the component of the high-entropy alloy is TiaCubAlcCrdMoeNbf, wherein, a, b, c, d, e and f represent the mol ratio of corresponding each element, 0.3≤a≤1.5,0.2≤b≤1.2,0.2≤c≤1.5,0.05≤d≤1.2,0≤e≤1.2,0.05≤f≤1.2 respectively.The present invention prepares microhardness not less than 600HV, seawater corrosion resistance, the high entropy alloy material for possessing certain anti-pollution function by non-consumable vacuum arc melting technique or electromagnetic levitation-melt technique, the deficiency of traditional high-entropy alloy is made up, meets following Marine Materials application demand.
Description
Technical field
The present invention relates to technical field of high-entropy, and in particular to a kind of TiCuAlCrMoNb high-entropy alloys and its preparation side
Method.
Background technology
Seawater pipe is distributed in each position of ship, mainly provides refrigerated sea water and fire water to full ship, and provide
Ballast water needed for Ship's Ballast System, ensure the normal operation of key equipment of ship, its quantity is more, spacing is small, maintenance is protected
Support complexity, and it is most of in humidity, high temperature, high salinity adverse circumstances in, military service operating mode is severe.Titanium alloy has density
It is small, specific strength is high, without magnetic, the advantages that seawater corrosion resistance, had broad application prospects in ship domain.Existing ship titanium and titanium
Alloy yield strength is typically in below 1150MPa, it is impossible to meets deep sea equipment to high-strength titanium alloy application demand；And titanium has
Good biocompatibility, easily occurs sea marine organism pollution, when marine growth is accumulated in seawaterline inwall, will cause pipeline,
The blocks such as pump, valve, heat exchanger, influence seawater velocity and heat exchange efficiency.
High-entropy alloy（High Entropy Alloys）It is a kind of new alloy design reason proposed the 1990s
Read, also known as high randomness alloy, it is the alloy with the characteristics of all occupying high atomic percent by Determination of multiple metal elements, is breached
The development framework of conventional alloys based on a kind or 2 kinds of metallic elements, possesses high entropic effect thermodynamically, kinetically
The four big effects such as the cocktail effect in lattice misfit effect and performance in slow diffusion effect, crystal structure, can be according to need
Design new alloy material is sought, there is high intensity, high rigidity, wear-resisting, high temperature oxidation resisting, corrosion-resistant.
It is the face-centered cubic using CoCrFeMnNi as representative to report more high-entropy alloy at present（FCC）Solid solution structure
Alloy, added with Cu, Al etc.；Another kind of is dystectic single body-centered cubic（BCC）Solid solution structure NbMoTaW and VNbMoTaW
High-entropy alloy.Research for ship military service operating mode still belongs to blank, and existing high entropy alloy material only lays particular emphasis on single height
Strong high-ductility, or the research of single decay resistance, lack the conjunction of collection high-strength and high ductility, seawater corrosion resistance and antifouling property matched well
Golden material, it is badly in need of carrying out high-strength high-ductility corrosion high-entropy alloy pilot study, meets the application demand of following apparel.
The content of the invention
The present invention is in order to overcome existing high-entropy alloy not possess anti-pollution function, and marine titanium alloy low strength, easily
The deficiency of sea marine organism pollution occurs, there is provided a kind of TiCuAlCrMoNb high-entropy alloys and preparation method thereof.
The present invention is that technical scheme is used by solving the above problems：A kind of TiCuAlCrMoNb high-entropy alloys, it is special
Sign is：The component of the high-entropy alloy is TiaCubAlcCrdMoeNbf, wherein, a, b, c, d, e and f represent corresponding each element respectively
Mol ratio, 0.3≤a≤1.5,0.2≤b≤1.2,0.2≤c≤1.5,0.05≤d≤1.2,0≤e≤1.2,0.05≤f
≤1.2。
A kind of preparation method of TiCuAlCrMoNb high-entropy alloys, comprises the following steps：
Step 1: titanium sponge, Cu materials, Al materials and Cr materials are placed in container, then respectively with Al-Mo/Ti-Mo,
After the form of Al-Nb/Ti-Nb intermediate alloys adds Mo, Nb, Al and/or Ti in a reservoir, it is ultrasonically treated, it is standby；
Step 2: according to described component, the step of weighing equimolar amounts or equimultiple mol ratio one obtained sponge
Titanium, Cu materials, Al materials, Cr materials, Al-Mo/Ti-Mo materials, Al-Nb/Ti-Nb materials；
Step 3: take titanium sponge to be put into a melting pond of water cooled copper mould, then remaining each material that step 2 is weighed
It is sequentially placed according to the fusing point order from low to high from bottom to top of material in another melting pond of water cooled copper mould, it is standby；
It is sequentially placed according to the fusing point order from low to high from bottom to top of material, ensures melting uniformity；
Step 4: by the vacuum chamber inside smelting furnace to 5 × 10-3Pa, argon gas is then charged with to 0.01Pa, the step
Suddenly in triplicate above with clean vacuum chambers；
Step 5: Cu materials, Al materials, Cr materials, Al-Mo/Ti- in difference melting titanium sponge and another melting pond
Mo materials and Al-Nb/Ti-Nb materials, ingot bar A and alloy ingot B are obtained after casting successively, ingot bar A and alloy ingot B is placed
After together, melting 3 ~ 5 times, the melting of progress same method after 180 ° of sample is overturn after each melting, after furnace cooling, be made
TiCuAlCrMoNb high-entropy alloys.
Further, Cu materials, Al materials, Cr materials, Al-Mo/Ti-Mo materials and the Al-Nb/Ti- that step 1 uses
The purity of Nb materials is more than 99.9%.
Further, the method for the supersound process in step 1 is：Acetone is added in container all to be flooded to each material
After not, it is cleaned by ultrasonic 15 ~ 20min, removes the greasy dirt and impurity of surface attachment；Then the titanium sponge after the removal of impurity, Cu will be removed again
Material, Al materials, Cr materials, Al-Mo/Ti-Mo materials and Al-Nb/Ti-Nb materials are respectively placed in container, add anhydrous second
After alcohol is all submerged to each material, it is cleaned by ultrasonic 15 ~ 20min, is subsequently placed in baking oven and dries, the sea after being ultrasonically treated
Continuous titanium, Cu materials, Al materials, Cr materials, Al-Mo/Ti-Mo materials and Al-Nb/Ti-Nb materials.
Further, in the vacuum chamber of step 4, purity >=99.999% of argon gas, oxygen content≤1.5ppm, nitrogen content≤
50ppm, phosphorus content≤4ppm, water content≤3ppm.
In the step five of the present invention, melting is carried out using non-consumable vacuum arc melting technique, wherein, titanium sponge 200 ~
1 ~ 2min of melting under 400A melting electric currents, obtains alloy ingot A；Cu under 200 ~ 400A electric currents in another melting pond of melting
Material, Al materials, Cr materials, Al-Mo/Ti-Mo materials and Al-Nb/Ti-Nb 1 ~ 2min of material, obtain alloy ingot B.
In the step five of the present invention, using electromagnetic levitation-melt technique to Cu materials in titanium sponge and another melting pond
Material, Al materials, Cr materials, Al-Mo/Ti-Mo materials and Al-Nb/Ti-Nb materials carry out melting, by electromagnetic field and induced electricity
The Lorentz force that the interphase interaction of stream is formed suspends metal bath get up, the caused sense in coil using alternating electromagnetic field
Induced current heats fusing metal.
In the present invention, Mo and Nb element fusing points are higher, from Al-Mo or Ti-Mo, Al-Nb or Ti-Nb centre during melting
Alloy replaces simple metal.Titanium is an essential element of this patent high-entropy alloy, and some or all Ti source is sea
Continuous titanium, titanium sponge are usually the existing biscuit titanium produced by metallothermic processes, and purity is not less than 99.8%, because
Titanium sponge is more loose, and titanium sponge volatile matter has an impact to alloy property during to prevent direct melting, in step 5, first sea
Continuous titanium is smelted into ingot bar, then is fully mutually melted with Cu, Al, Cr, Mo, Nb other elements melt, obtains impurity element particularly O elements
The relatively low high-entropy alloy ingot casting of content.
In the present invention, Ti elements are advantageous to improve solution strengthening, the distortion of lattice characteristic of alloy, and Cu elements possess antifouling work(
Energy, the antifouling properties of alloy can be improved, and Cu is face-centered cubic crystal structure, and when higher than 354 DEG C, both can form the center of area
The complete solid solution tissue of cubic structure, the toughness of alloy is improved, therefore Ti, Cu are the preferred pivots for designing alloy.Al has
Face-centered cubic crystal structure, with the increase of Al constituent contents, the crystal structure of alloy can be caused gradually to be turned from FCC to FCC+BCC
Change, thus Al content be not easy it is too high.Cr、Mo（Refractory metal）Alloy can be promoted to be changed from FCC to BCC, be advantageous to improve alloy
Intensity, meanwhile, Cr, Mo, Ti are corrosion resistant alloy common elements, are easily formed dense oxidation film in alloy surface and improve alloy
Corrosion resisting property, Nb improves favourable to Impact Toughness of Alloy.
Beneficial effect：1st, the present invention intends the alloying member that selection is easy to improve alloy strength on the basis of Ti, Cu element
Plain Al, Cr, Mo and essential element of the element nb as alloy for being easy to improve alloy ductility, prepare the high entropy conjunctions of TiCuAlCrMoNb
Golden system.The corrosion resistant alloy of Ti, Cr, Mo generation in alloy, beneficial to the corrosion resisting property of enhancing alloy；Cu, Cr, Mo, Nb mole
Percentage is smaller, can obtain the less high-entropy alloy of density；Meanwhile Mo is high-melting-point refractory metal elements, can promote alloy
Changed from FCC to BCC, be advantageous to improve the intensity of alloy.
2nd, the present invention prepares microhardness not by non-consumable vacuum arc melting technique or electromagnetic levitation-melt technique
Less than 600HV, seawater corrosion resistance, the high entropy alloy material for possessing certain anti-pollution function, the deficiency of traditional high-entropy alloy is made up, it is full
The following Marine Materials application demand of foot.Melting vacuum, melting electric current and melting number are controlled during alloy melting, is prepared
TiCuAlCrMoNb high-entropy alloys.
3rd, the high-entropy alloy density that prepared by the present invention is smaller, and intensity, hardness are high, and sea water corrosion resistant is excellent, and possesses
Certain anti-pollution function.Develop the yield strength R of alloyp0.2>=1350MPa, tensile strength Rm>=1500MPa, elongation percentage A >=
10%, hardness >=600HV, homogeneous corrosion rate≤0.001mm/a is soaked in 60 DEG C of seawater, copper ion dissolution rate is more than 10ppb, have
There are higher intensity, hardness, plasticity and toughness, excellent sea water corrosion resistant, and possess certain anti-pollution function, compensate for tradition
The shortcomings that high-entropy alloy combination property is poor, and existing titanium alloy is not antifouling, solve in high-entropy alloy solid solution phase formed and
Phase in version controls, and high-entropy alloy mechanical property, density match the key technologies such as regulation and control with corrosion resisting property, in ship/deep sea equipment
Seawater pipe has good application prospect.
Embodiment
With reference to specific embodiment, the invention will be further described, so that those skilled in the art can be more preferable
Understand the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
A kind of TiCuAlCrMoNb high-entropy alloys, the component of the high-entropy alloy is TiaCubAlcCrdMoeNbf, wherein, a, b,
C, d, e and f represent the mol ratio of corresponding each element respectively, 0.3≤a≤1.5,0.2≤b≤1.2,0.2≤c≤1.5, and 0.05
≤ d≤1.2,0≤e≤1.2,0.05≤f≤1.2.
Embodiment 1
A kind of TiCuAlCrMoNb high-entropy alloys, the component of the high-entropy alloy is TiaCubAlcCrdMoeNbf, wherein, arbitrarily
The mol ratio of two elements is 1：1.
A kind of preparation method of TiCuAlCrMoNb high-entropy alloys, comprises the following steps：
First, it is ultrasonically treated：Titanium sponge, Cu materials, Al materials and Cr materials are placed in container, then respectively with Al-Mo/
After the form of Ti-Mo, Al-Nb/Ti-Nb intermediate alloy adds Mo, Nb, Al and/or Ti in a reservoir, acetone is added to each material
After being all submerged, it is cleaned by ultrasonic 15 ~ 20min, removes the greasy dirt and impurity of surface attachment；Then the sea after the removal of impurity will be gone to again
Continuous titanium, Cu materials, Al materials, Cr materials, Al-Mo/Ti-Mo materials and Al-Nb/Ti-Nb materials are placed in container, are added anhydrous
After ethanol is all submerged to each material, it is cleaned by ultrasonic 15 ~ 20min, is placed in baking oven and dries, the sponge after being ultrasonically treated
Titanium, Cu materials, Al materials, Cr materials, Al-Mo/Ti-Mo materials and Al-Nb/Ti-Nb materials.
2nd, dispensing：Weigh the component, titanium sponge, Cu after the supersound process for weighing step 1 and obtaining of equimolar amounts
Material, Al materials, Cr materials, Al-Mo/Ti-Mo materials and Al-Nb/Ti-Nb materials；
3rd, high-entropy alloy melting：1. titanium sponge is put into a melting pond of water cooled copper mould, then step 2 is weighed
Cu materials, Al materials, Cr materials, Al-Mo/Ti-Mo materials and Al-Nb/Ti-Nb materials after supersound process are placed on cold water copper mold
In another melting pond, it is sequentially placed from bottom to top from low to high by material melting point, ensures melting uniformity；Wherein, from lower and
Upper placement order is Al, Cu, Cr, Al-Nb/Ti-Nb, Al-Mo/Ti-Mo；
2. water cooled copper mould is located in smelting furnace, by the vacuum chamber inside smelting furnace to 5 × 10-3Pa, it is then charged with
High-purity argon gas is to 0.01Pa, and the process is in triplicate above with clean vacuum chambers.Wherein, the purity of the high-purity argon gas in vacuum chamber
>=99.999%, oxygen content≤1.5ppm, nitrogen content≤50ppm, phosphorus content≤4ppm, water content≤3ppm；
3. first, melting 1~2min of titanium sponge under conditions of melting electric current is 200~400A, obtains ingot bar A, secondly,
Cu materials, Al materials, Cr materials, Al-Mo/Ti-Mo materials and Al-Nb/Ti-Nb materials after the supersound process that step 2 is weighed
1~2min of melting under 200~400A electric currents, obtains alloy ingot B, then puts together ingot bar A and alloy ingot B molten
Refining 3~5 times, same electric arc melting is carried out after overturning 180 ° of sample after each melting, after furnace cooling, is obtained
TiCuAlCrMoNb high-entropy alloys.
TiCuAlCrMoNb high-entropy alloys obtained by the present embodiment, density 5.23g/cm3, microhardness 796HV, bend
It is 1510MPa to take intensity, tensile strength 1980MPa, elongation percentage 13.0%.Soaked 60 days in 60 DEG C of seawater, alloy is uniformly rotten
Erosion rate is 0.0003mm/a, and copper ion stripping quantity is 390ppb, possesses certain anti-fouling effect.
Embodiment 2
A kind of TiCuAlCrMoNb high-entropy alloys, the component of the high-entropy alloy is TiaCubAlcCrdMoeNbf, wherein, mole
Percentage is that a is 1mol, b 0.5mol, c 1mol, d 0.2mol, e 0.3mol, f 0.5mol.
A kind of preparation method of TiCuAlCrMoNb high-entropy alloys, comprises the following steps：
First, it is ultrasonically treated：Titanium sponge, Cu materials, Al materials and Cr materials are placed in container, then respectively with Ti-Mo,
After the form of Al-Nb intermediate alloys adds Mo, Nb, Al and Ti in a reservoir, after addition acetone is all submerged to each material, surpass
Sound cleans 15 ~ 18min, removes the greasy dirt and impurity of surface attachment；Then the titanium sponge after the removal of impurity, Cu materials, Al will be removed again
Material, Cr materials, Ti-Mo materials and Al-Nb materials are placed in container, after addition absolute ethyl alcohol is all submerged to each material,
It is cleaned by ultrasonic 15 ~ 18min, is placed in baking oven and dries, titanium sponge, Cu materials, Al materials, Cr materials after being ultrasonically treated,
Ti-Mo materials and Al-Nb materials.
2nd, dispensing：Weigh the component, the sponge after the supersound process for weighing step 1 and obtaining of each element equimolar amounts
Titanium, Cu materials, Al materials, Cr materials, Ti-Mo materials and Al-Nb materials；
3rd, high-entropy alloy melting：1. titanium sponge is put into a melting pond of water cooled copper mould, then step 2 is weighed
Cu materials, Al materials, Cr materials, Ti-Mo materials and Al-Nb materials after supersound process are placed on another melting pond of cold water copper mold
It is interior, it is sequentially placed from bottom to top from low to high by material melting point, ensures melting uniformity；Wherein, the order of placement from bottom to top is
Al、Cu、Cr、Al-Nb、Ti-Mo；
2. water cooled copper mould is located in smelting furnace, by the vacuum chamber inside smelting furnace to 5 × 10-3Pa, it is then charged with
High-purity argon gas is to 0.01Pa, and the process is in triplicate above with clean vacuum chambers.Wherein, purity >=99.999% of high-purity argon gas,
Oxygen content≤1.5ppm, nitrogen content≤50ppm, phosphorus content≤4ppm, water content≤3ppm；
3. first, melting 1~2min of titanium sponge under conditions of melting electric current is 200~250A, secondly, step 2 is claimed
Cu materials, Al materials, Cr materials, Ti-Mo materials and Al-Nb the materials melting 1 under 200~250A electric currents after the supersound process taken
~2min, ingot bar is obtained, both are then put together into melting 3~5 times, carried out together after 180 ° of sample is overturn after each melting
The electric arc melting of sample, after furnace cooling, obtain TiCu0.5AlCr0.2Mo0.3Nb0.5High-entropy alloy.
TiCu obtained by the present embodiment0.5AlCr0.2Mo0.3Nb0.5High-entropy alloy, density 4.96g/cm3, microhardness is
752HV, yield strength 1490MPa, tensile strength 1965MPa, elongation percentage 14.5%.Soak 60 days, close in 60 DEG C of seawater
Golden homogeneous corrosion rate is 0.00035mm/a, and copper ion stripping quantity is 315ppb, possesses certain anti-fouling effect.
Embodiment 3
A kind of TiCuAlCrMoNb high-entropy alloys, the component of the high-entropy alloy is TiaCubAlcCrdMoeNbf, wherein, mole
Percentage is that a is 0.9mol, b 0.6mol, c 0.2mol, d 0.5mol, e 0mol, f 0.05mol.
A kind of preparation method of TiCuAlCrNb high-entropy alloys, comprises the following steps：
Step 1: titanium sponge, Cu materials, Al materials and Cr materials are placed in container, then respectively with Ti-Nb intermediate alloys
Form add Nb, Ti in a reservoir after, add after acetone is all submerged to each material, be cleaned by ultrasonic 15 ~ 20min, remove
The greasy dirt and impurity of surface attachment；Then titanium sponge, Cu materials, Al materials, Cr materials and Ti-Nb after the removal of impurity will be removed again
Material is respectively placed in container, after addition absolute ethyl alcohol is all submerged to each material, is cleaned by ultrasonic 15 ~ 20min, is subsequently placed in
Dried in baking oven, titanium sponge, Cu materials, Al materials, Cr materials and Ti-Nb materials after being ultrasonically treated；
Step 2: according to described component, titanium sponge that the step of weighing equimolar amounts or certain mol ratio one obtains,
Cu materials, Al materials, Cr materials and Ti-Nb materials；
Step 3: take titanium sponge to be put into a melting pond of water cooled copper mould, then Cu materials, the Al materials that step 2 is weighed
Material, Cr materials and Ti-Nb materials are sequentially placed water cooled copper mould another melting according to material melting point from bottom to top from low to high
It is standby in pond；Wherein, the order of placement from bottom to top is Al, Cu, Cr, Ti-Nb；
Step 4: by the vacuum chamber inside smelting furnace to 5 × 10-3Pa, argon gas is then charged with to 0.01Pa, the step
Suddenly in triplicate above with clean vacuum chambers；
Step 5: using non-consumable vacuum arc melting technique respectively under 250 ~ 400A melting electric currents melting titanium sponge 1 ~
2min, ingot bar A is obtained after casting；Cu materials, Al materials, Cr materials and Ti-Nb materials in another melting pond 250 ~
1 ~ 2min of melting under 400A melting electric currents, obtains alloy ingot B after casting, by ingot bar A and alloy ingot B put together according to
Preceding method melting 4 ~ 5 times, the melting of progress same method after 180 ° of sample is overturn after each melting, after furnace cooling, be made
Ti0.9Cu0.6Al0.2Cr0.5Nb0.05High-entropy alloy.
Ti obtained by the present embodiment0.9Cu0.6Al0.2Cr0.5Nb0.05High-entropy alloy, density 4.81g/cm3, microhardness is
817HV, yield strength 1410MPa, tensile strength 1950MPa, elongation percentage 17.5%.Soak 60 days, close in 60 DEG C of seawater
Golden homogeneous corrosion rate is 0.0005mm/a, and copper ion stripping quantity is 280ppb, possesses certain anti-fouling effect.
Embodiment 4
A kind of TiCuAlCrMoNb high-entropy alloys, the component of the high-entropy alloy is TiaCubAlcCrdMoeNbf, wherein, mole
Percentage is that a is 0.9mol, b 0.6mol, c 1.2mol, d 0.7mol, e 0mol, f 0.3mol.
A kind of preparation method of TiCuAlCrNb high-entropy alloys, the step of preparation method one to step 4 with embodiment 1, it is real
Apply in example 4, using electromagnetic levitation-melt technique to Cu materials in titanium sponge and another melting pond, Al materials, Cr materials and
Al-Nb materials carry out melting, and the Lorentz force formed by the interphase interaction of electromagnetic field and induced-current hangs metal bath
Float, using alternating electromagnetic field, caused induced-current heats fusing metal in coil；Then by obtained ingot bar A and conjunction
Golden ingot bar B is put together according to electromagnetic levitation-melt technique melting 3 ~ 5 times, is carried out together after 180 ° of sample is overturn after each melting
The melting of quadrat method, ingot casting composition are more uniform.After furnace cooling, Ti is made0.9Cu0.6Al1.2Cr0.7Nb0.3High-entropy alloy.
Ti obtained by the present embodiment0.9Cu0.6Al1.2Cr0.7Nb0.3High-entropy alloy, density 4.86g/cm3, microhardness is
832HV, yield strength 1425MPa, tensile strength 1965MPa, elongation percentage 15.2%.Soak 60 days, close in 60 DEG C of seawater
Golden homogeneous corrosion rate is 0.00048mm/a, and copper ion stripping quantity is 245ppb, possesses certain anti-fouling effect.
In the present invention, electromagnetic levitation-melt technique：The alloy solution for making melting using electromagnetic force suspension technology suspends,
Wherein, high-frequency alternating current is led in coil, melting electric current is 80 ~ 120A；Lead to high-frequency alternating magnetic field around coil, sense is produced in material
It should be vortexed, suspending power reaches dynamic balance state with material deadweight.
Embodiment 5
A kind of TiCuAlCrMoNb high-entropy alloys, the component of the high-entropy alloy is TiaCubAlcCrdMoeNbf, wherein, mole
Percentage is that a is 0.3mol, b 0.2mol, c 1.5mol, d 1.2mol, e 0.7mol, f 0.05mol.Its preparation side
Method is with embodiment 3, wherein the raw material used is titanium sponge, Cu materials, Al materials, Cr materials, Al-Mo materials, Ti-Nb material,
Ti is prepared0.3Cu0.2Al1.5Cr1.2Mo0.7Nb0.05High-entropy alloy.
Ti obtained by the present embodiment0.3Cu0.2Al1.5Cr1.2Mo0.7Nb0.05High-entropy alloy, density 5.28g/cm3, it is micro- hard
Spend for 720HV, yield strength 1410MPa, tensile strength 1865MPa, elongation percentage 12.7%.60 are soaked in 60 DEG C of seawater
My god, alloy homogeneous corrosion rate is 0.0006mm/a, and copper ion stripping quantity is 76ppb, possesses certain anti-fouling effect.
Embodiment 6
A kind of TiCuAlCrMoNb high-entropy alloys, the component of the high-entropy alloy is TiaCubAlcCrdMoeNbf, wherein, mole
Percentage is that a is 1.5mol, b 1.2mol, c 0.8mol, d 0.05mol, e 1.2mol, f 1.2mol.Its preparation side
Method is with embodiment 1, wherein the raw material used is titanium sponge, Cu materials, Al materials, Cr materials, Al-Mo materials, Al-Nb material,
Ti is prepared1.5Cu1.2Al0.8Cr0.05Mo1.2Nb1.2High-entropy alloy.
Ti obtained by the present embodiment1.5Cu1.2Al0.8Cr0.05Mo1.2Nb1.2High-entropy alloy, density 4.79g/cm3, it is micro- hard
Spend for 745HV, yield strength 1450MPa, tensile strength 1878MPa, elongation percentage 11.2%.60 are soaked in 60 DEG C of seawater
My god, alloy homogeneous corrosion rate is 0.0002mm/a, and copper ion stripping quantity is 560ppb, possesses certain anti-fouling effect.
Embodiment 7
A kind of TiCuAlCrMoNb high-entropy alloys, the component of the high-entropy alloy is TiaCubAlcCrdMoeNbf, wherein, mole
Percentage is that a is 0.6mol, b 0.7mol, c 0.2mol, d 0.6mol, e 0.5mol, f 0.6mol.Its preparation side
Method is with embodiment 1, wherein the raw material used is titanium sponge, Cu materials, Al materials, Cr materials, Ti-Mo materials, Ti-Nb material,
Ti is prepared0.6Cu0.7Al0.2Cr0.6Mo0.5Nb0.6High-entropy alloy.
High-entropy alloy sea water corrosion resistant prepared by the present invention is excellent, and possesses certain anti-pollution function, makes up tradition
High-entropy alloy only lays particular emphasis on the deficiency of single high-strength or single corrosion resistance, obtains intensity, hardness, plasticity and toughness, corrosion-resistant and anti-
The alloy material of dirty functional matching, has filled up research blank of the high-entropy alloy in ship domain, has expanded new application direction,
Application feasibility based theoretical is engineered for high-entropy alloy future ship domain.
Claims (7)
- A kind of 1. TiCuAlCrMoNb high-entropy alloys, it is characterised in that：The component of the high-entropy alloy is TiaCubAlcCrdMoeNbf, Wherein, a, b, c, d, e and f represent the mol ratio of corresponding each element, 0.3≤a≤1.5,0.2≤b≤1.2,0.2≤c respectively ≤ 1.5,0.05≤d≤1.2,0≤e≤1.2,0.05≤f≤1.2.
- 2. prepare a kind of method of TiCuAlCrMoNb high-entropy alloys as claimed in claim 1, it is characterised in that including following Step：Step 1: titanium sponge, Cu materials, Al materials and Cr materials are placed in container, then respectively with Al-Mo/Ti-Mo, Al- After the form of Nb/Ti-Nb intermediate alloys adds Mo, Nb, Al and/or Ti in a reservoir, it is ultrasonically treated, it is standby；Step 2: according to described component, the step of weighing equimolar amounts or equimultiple mol ratio one obtained titanium sponge, Cu Material, Al materials, Cr materials, Al-Mo/Ti-Mo materials, Al-Nb/Ti-Nb materials；Step 3: take titanium sponge to be put into a melting pond of water cooled copper mould, then by remaining each material that step 2 weighs according to The order of the fusing point of material from low to high from bottom to top is sequentially placed in another melting pond of water cooled copper mould, standby；Step 4: by the vacuum chamber inside smelting furnace to 5 × 10-3Pa, argon gas is then charged with to 0.01Pa, the step weight Again three times above with clean vacuum chambers；Step 5: Cu materials, Al materials, Cr materials, Al-Mo/Ti-Mo materials in difference melting titanium sponge and another melting pond Material and Al-Nb/Ti-Nb materials, ingot bar A and alloy ingot B are obtained after casting successively, ingot bar A and alloy ingot B are placed on one After rising, melting 3 ~ 5 times, the melting of progress same method after 180 ° of sample is overturn after each melting, after furnace cooling, be made TiCuAlCrMoNb high-entropy alloys.
- A kind of 3. preparation method of TiCuAlCrMoNb high-entropy alloys according to claim 2, it is characterised in that：Step 1 The Cu materials of use, Al materials, Cr materials, the mass percentage content of Al-Mo/Ti-Mo materials and Al-Nb/Ti-Nb materials are Purity is more than 99.9%.
- A kind of 4. preparation method of TiCuAlCrMoNb high-entropy alloys according to claim 2, it is characterised in that：Step 1 In the method for supersound process be：After addition acetone is all submerged to each material in container, it is cleaned by ultrasonic 15 ~ 20min, goes Except the greasy dirt and impurity of surface attachment；Then the titanium sponge after the removal of impurity, Cu materials, Al materials, Cr materials, Al-Mo/ will be removed again Ti-Mo materials and Al-Nb/Ti-Nb materials are respectively placed in container, after addition absolute ethyl alcohol is all submerged to each material, are surpassed Sound cleans 15 ~ 20min, is subsequently placed in baking oven and dries, titanium sponge, Cu materials, Al materials, Cr materials after being ultrasonically treated Material, Al-Mo/Ti-Mo materials and Al-Nb/Ti-Nb materials.
- A kind of 5. preparation method of TiCuAlCrMoNb high-entropy alloys according to claim 2, it is characterised in that：Step 4 Vacuum chamber in, purity >=99.999% of argon gas, oxygen content≤1.5ppm, nitrogen content≤50ppm, phosphorus content≤4ppm is aqueous Amount≤3ppm.
- A kind of 6. preparation method of TiCuAlCrMoNb high-entropy alloys according to claim 2, it is characterised in that：Step 5 In, melting is carried out using non-consumable vacuum arc melting technique, wherein, melting 1 under titanium sponge 200 ~ 400A melting electric currents ~ 2min, obtain alloy ingot A；Cu materials, Al materials, Cr materials under 200 ~ 400A electric currents in another melting pond of melting, Al-Mo/Ti-Mo materials and Al-Nb/Ti-Nb 1 ~ 2min of material, obtain alloy ingot B.
- A kind of 7. preparation method of TiCuAlCrMoNb high-entropy alloys according to claim 2, it is characterised in that：Step 5 In, using electromagnetic levitation-melt technique to Cu materials, Al materials, Cr materials, Al-Mo/ in titanium sponge and another melting pond Ti-Mo materials and Al-Nb/Ti-Nb materials carry out melting, the long-range navigation formed by the interphase interaction of electromagnetic field and induced-current Hereby power suspends metal bath get up, and using alternating electromagnetic field, caused induced-current heats fusing metal in coil.
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| CN109913732B (en) * | 2019-03-21 | 2021-06-08 | 大连理工大学 | Irradiation-resistant FCC structure high-entropy alloy |
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| CN111647767B (en) * | 2020-06-29 | 2021-07-20 | 西安斯瑞先进铜合金科技有限公司 | Method for preparing CuTi25 intermediate alloy by using magnetic suspension smelting process |
| CN111763847B (en) * | 2020-06-29 | 2021-07-06 | 西安斯瑞先进铜合金科技有限公司 | Method for preparing copper-titanium 50 intermediate alloy by using magnetic suspension smelting process |
| CN112458352B (en) * | 2020-11-23 | 2022-11-11 | 北京航空航天大学 | Corrosion-resistant aluminum-transition metal series biphase high-entropy alloy and preparation method thereof |
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