CN106222517A - A kind of TiCuAlCrMoNb high-entropy alloy and preparation method thereof - Google Patents
A kind of TiCuAlCrMoNb high-entropy alloy and preparation method thereof Download PDFInfo
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Abstract
A kind of TiCuAlCrMoNb high-entropy alloy and preparation method thereof, the component of this 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 by non-consumable vacuum arc melting technique or electromagnetic levitation-melt technique and is not less than 600HV, seawater corrosion resistance, possesses the high entropy alloy material of certain anti-pollution function, make up the deficiency of tradition high-entropy alloy, meet following Marine Materials application demand.
Description
Technical field
The present invention relates to technical field of high-entropy, be specifically related to a kind of TiCuAlCrMoNb high-entropy alloy and preparation side thereof
Method.
Background technology
Seawater pipe is distributed in each position of boats and ships, mainly provides refrigerated sea water and fire water to full ship, and provides
Ballast water needed for Ship's Ballast System, it is ensured that key equipment of ship properly functioning, its quantity is many, spacing is little, maintenance is protected
Supporting complexity, and great majority are in the adverse circumstances of humidity, high temperature, high salinity, military service operating mode is severe.Titanium alloy has density
Little, specific strength is high, without advantages such as magnetic, seawater corrosion resistances, have broad application prospects at ship domain.Existing ship titanium and titanium
Alloy yield strength is typically at below 1150MPa, it is impossible to meet deep sea equipment to high-strength titanium alloy application demand；And titanium has
Good biocompatibility, is susceptible to sea marine organism pollution, when marine growth is piled up at seawaterline inwall, will result in pipeline,
The block such as pump, valve, heat exchanger, affect seawater velocity and heat exchange efficiency.
High-entropy alloy (High Entropy Alloys) is a kind of new alloy design reason proposed the nineties in 20th century
Reading, be also called high randomness alloy, it is all to occupy the high atomic percent alloy as feature with Determination of multiple metal elements, breaches
Based on the development framework of the conventional alloys of a kind or 2 kinds metallic element, possesses high entropic effect thermodynamically, kinetically
The slowly four big effects such as the lattice misfit effect on spreading effect, crystal structure and the cocktail effect in performance, can be according to need
Seek design novel alloy material, there is high intensity, high rigidity, wear-resisting, high temperature oxidation resisting, the feature such as corrosion-resistant.
Report that more high-entropy alloy is face-centered cubic (FCC) solid solution structure with CoCrFeMnNi as representative at present
Alloy, added with Cu, Al etc.；Another kind of for dystectic single body-centered cubic (BCC) solid solution structure NbMoTaW and VNbMoTaW
High-entropy alloy.Research for boats and ships 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 single decay resistance research, lack collection high-strength and high ductility, seawater corrosion resistance and the conjunction of antifouling property matched well
Gold copper-base alloy, is badly in need of carrying out high-strength high-ductility corrosion high-entropy alloy exploratory study, meets the application demand of following apparel.
Summary 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
There is the deficiency of sea marine organism pollution, it is provided that a kind of TiCuAlCrMoNb high-entropy alloy and preparation method thereof.
The present invention solves that the technical scheme that the problems referred to above are used is: a kind of TiCuAlCrMoNb high-entropy alloy, it is special
Levy and be: the component of this 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。
The preparation method of a kind of TiCuAlCrMoNb high-entropy alloy, comprises the following steps:
Step one, titanium sponge, Cu material, Al material and Cr material are placed in container, more respectively with Al-Mo/Ti-Mo, Al-
After the form of Nb/Ti-Nb intermediate alloy adds Mo, Nb, Al and/or Ti in a reservoir, carry out supersound process, standby；
Step 2, according to described component, weigh titanium sponge, Cu that the step one of equimolar amounts or equimultiple mol ratio obtains
Material, Al material, Cr material, Al-Mo/Ti-Mo material, Al-Nb/Ti-Nb material；
Step 3, take titanium sponge and put into a melting pond of water cooled copper mould, the more each material of residue that step 2 is weighed according to
The fusing point of material order the most from bottom to top is sequentially placed in another melting pond of water cooled copper mould, standby；According to
The fusing point of material order the most from bottom to top is sequentially placed, it is ensured that melting uniformity；
Step 4, by the vacuum chamber within smelting furnace to 5 × 10-3Pa, is then charged with argon to 0.01Pa, this step
Above with clean vacuum chambers in triplicate；
Cu material in step 5, difference melting titanium sponge and another melting pond, Al material, Cr material, Al-Mo/Ti-Mo material
Material and Al-Nb/Ti-Nb material, obtain ingot bar A and alloy ingot B after casting successively, ingot bar A and alloy ingot B be placed on one
After Qiing, melting 3 ~ 5 times, carry out the melting of same method after overturning 180 ° of sample after each melting, after furnace cooling, prepare
TiCuAlCrMoNb high-entropy alloy.
Further, Cu material, Al material, Cr material, Al-Mo/Ti-Mo material and the Al-Nb/Ti-that step one uses
The purity of Nb material is more than 99.9%.
Further, the method for the supersound process in step one is: adds acetone in container and is all flooded to each material
After Mei, ultrasonic cleaning 15 ~ 20min, removes greasy dirt and the impurity of surface attachment；The titanium sponge after the removal of impurity, Cu will be removed the most again
Material, Al material, Cr material, Al-Mo/Ti-Mo material and Al-Nb/Ti-Nb material are respectively placed in container, add anhydrous second
After alcohol is all submerged to each material, ultrasonic cleaning 15 ~ 20min, it is subsequently placed in baking oven drying, obtains the sea after supersound process
Continuous titanium, Cu material, Al material, Cr material, Al-Mo/Ti-Mo material and Al-Nb/Ti-Nb material.
Further, in the vacuum chamber of step 4, purity >=99.999% of argon, oxygen content≤1.5ppm, nitrogen content≤
50ppm, phosphorus content≤4ppm, water content≤3ppm.
In the step 5 of the present invention, non-consumable vacuum arc melting technique is utilized to carry out melting, wherein, titanium sponge 200 ~
Melting 1 ~ 2min under 400A melting electric current, obtains alloy ingot A；The Cu in another melting pond of melting under 200 ~ 400A electric current
Material, Al material, Cr material, Al-Mo/Ti-Mo material and Al-Nb/Ti-Nb material 1 ~ 2min, obtain alloy ingot B.
In the step 5 of the present invention, use electromagnetic levitation-melt technique to Cu material in titanium sponge and another melting pond
Material, Al material, Cr material, Al-Mo/Ti-Mo material and Al-Nb/Ti-Nb material carry out melting, rely on electromagnetic field and faradism
The Lorentz force that the interphase interaction of stream is formed suspends metal bath get up, and utilizes the sense that alternating electromagnetic field produces in coil
Induced current adds heat fusing metal.
In the present invention, Mo and Nb element fusing point is higher, selects Al-Mo or Ti-Mo, the centre of Al-Nb or Ti-Nb during melting
Alloy replaces simple metal.Titanium is an essential element of this patent high-entropy alloy, and the source of part or all Ti is sea
Continuous titanium, titanium sponge is usually the existing biscuit titanium produced by metallothermic processes, and purity is not less than 99.8%, because of
Titanium sponge is the most loose, and during for preventing direct melting, titanium sponge volatile matter produces impact to alloy property, in step 5, first sea
Continuous titanium is smelted into ingot bar, then melts the most mutually with other element melt of Cu, Al, Cr, Mo, Nb, it is thus achieved that impurity element particularly O element
The high-entropy alloy ingot casting that content is relatively low.
In the present invention, Ti element is conducive to putting forward heavy alloyed solution strengthening, distortion of lattice characteristic, and Cu element possesses antifouling merit
Can, the antifouling properties of alloy can be improved, and Cu is face-centered cubic crystal structure, when higher than 354 DEG C, both can form the center of area
The complete solid solution tissue of cubic structure, puies forward heavy alloyed toughness, and therefore Ti, Cu are the first-selected pivots of design alloy.Al has
Face-centered cubic crystal structure, increases with Al constituent content, the crystal structure of alloy can be caused gradually to be turned to FCC+BCC by FCC
Changing, therefore Al content is difficult to too high.Cr, Mo(refractory metal) can promote that alloy is changed to BCC by FCC, be conducive to improving alloy
Intensity, meanwhile, Cr, Mo, Ti are corrosion resistant alloy common element, are easily formed dense oxidation film at alloy surface and improve alloy
Corrosion resisting property, Impact Toughness of Alloy is improved favourable by Nb.
Beneficial effect: 1, the present invention is on the basis of Ti, Cu element, intends the alloying unit selecting to be prone to improve alloy strength
Element Al, Cr, Mo and be prone to the element nb improving alloy ductility and close as the essential element of alloy, preparation TiCuAlCrMoNb height entropy
Gold system.The corrosion resistant alloy that Ti, Cr, Mo in alloy generates, is beneficial to strengthen the corrosion resisting property of alloy；Cu, Cr, Mo, Nb mole
Percent is less, it is possible to obtain the high-entropy alloy that density is less；Meanwhile, Mo is high-melting-point refractory metal elements, can promote alloy
Changed to BCC by FCC, be conducive to putting forward heavy alloyed intensity.
2, the present invention prepares microhardness not by non-consumable vacuum arc melting technique or electromagnetic levitation-melt technique
Less than 600HV, seawater corrosion resistance, possess the high entropy alloy material of certain anti-pollution function, make up the deficiency of tradition high-entropy alloy, full
The following Marine Materials application demand of foot.Control melting vacuum, melting electric current and melting number of times during alloy melting, prepare
TiCuAlCrMoNb high-entropy alloy.
3, the high-entropy alloy density that prepared by the present invention is less, and intensity, hardness are high, and sea water corrosion resistant is excellent, and possesses
Certain anti-pollution function.Develop yield strength R of alloyp0.2>=1350MPa, tensile strength Rm>=1500MPa, elongation percentage A >=
10%, hardness >=600HV, soak homogeneous corrosion rate≤0.001mm/a in 60 DEG C of sea water, copper ion dissolution rate is more than 10ppb, tool
There are higher intensity, hardness, plasticity and toughness, excellent sea water corrosion resistant, and possess certain anti-pollution function, compensate for tradition
High-entropy alloy combination property is poor, and the shortcoming that existing titanium alloy is the most antifouling, solve in high-entropy alloy solid solution phase formed and
Phase in version controls, and high-entropy alloy mechanical property, density mate the key technologies such as regulation and control with corrosion resisting property, in boats and ships/deep sea equipment
Seawater pipe has good application prospect.
Detailed description of the invention
Below in conjunction with 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 alloy, the component of this 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 alloy, the component of this high-entropy alloy is TiaCubAlcCrdMoeNbf, wherein, any two yuan
The mol ratio of element is 1:1.
The preparation method of a kind of TiCuAlCrMoNb high-entropy alloy, comprises the following steps:
One, supersound process: titanium sponge, Cu material, Al material and Cr material are placed in container, more respectively with Al-Mo/Ti-Mo,
After the form of Al-Nb/Ti-Nb intermediate alloy adds Mo, Nb, Al and/or Ti in a reservoir, add acetone to each material all quilts
After flooding, ultrasonic cleaning 15 ~ 20min, removes greasy dirt and the impurity of surface attachment；The most again by go the titanium sponge after the removal of impurity,
Cu material, Al material, Cr material, Al-Mo/Ti-Mo material and Al-Nb/Ti-Nb material are placed in container, add dehydrated alcohol
After being all submerged to each material, ultrasonic cleaning 15 ~ 20min, be placed in baking oven drying, obtain the titanium sponge after supersound process,
Cu material, Al material, Cr material, Al-Mo/Ti-Mo material and Al-Nb/Ti-Nb material.
Two, dispensing: weigh described component, equimolar amounts weigh the titanium sponge after the supersound process that step one obtains, Cu
Material, Al material, Cr material, Al-Mo/Ti-Mo material and Al-Nb/Ti-Nb material；
Three, high-entropy alloy melting: 1. titanium sponge is put into a melting pond of water cooled copper mould, then step 2 is weighed ultrasonic
Cu material, Al material, Cr material, Al-Mo/Ti-Mo material and Al-Nb/Ti-Nb material after process be placed on cold water copper mold another
In individual melting pond, it is sequentially placed the most from bottom to top by material melting point, it is ensured that melting uniformity；Wherein, put from bottom to top
Put order for Al, Cu, Cr, Al-Nb/Ti-Nb, Al-Mo/Ti-Mo；
2. water cooled copper mould is positioned at smelting furnace, by the vacuum chamber within smelting furnace to 5 × 10-3Pa, is then charged with high-purity
Argon is to 0.01Pa, and this process is above with clean vacuum chambers in triplicate.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；
First, melting titanium sponge 1～2min under conditions of melting electric current is 200～400A, obtain ingot bar A, secondly, will step
After rapid two supersound process weighed, Cu material, Al material, Cr material, Al-Mo/Ti-Mo material and Al-Nb/Ti-Nb material exist
Melting 1～2min under 200～400A electric currents, obtains alloy ingot B, subsequently ingot bar A and alloy ingot B is put together melting
3～5 times, carry out same electric arc melting after overturning 180 ° of sample after each melting, after furnace cooling, obtain TiCuAlCrMoNb
High-entropy alloy.
The TiCuAlCrMoNb high-entropy alloy of the present embodiment gained, density is 5.23g/cm3, microhardness is 796HV, bends
Taking intensity is 1510MPa, and tensile strength is 1980MPa, and elongation percentage is 13.0%.Soaking 60 days in 60 DEG C of sea water, alloy is the most 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 alloy, the component of this high-entropy alloy is TiaCubAlcCrdMoeNbf, wherein, Mole percent
Number for a be 1mol, b be 0.5mol, c be 1mol, d be 0.2mol, e be 0.3mol, f be 0.5mol.
The preparation method of a kind of TiCuAlCrMoNb high-entropy alloy, comprises the following steps:
One, supersound process: titanium sponge, Cu material, Al material and Cr material are placed in container, more respectively with Ti-Mo, Al-Nb
After the form of intermediate alloy adds Mo, Nb, Al and Ti in a reservoir, add after acetone is all submerged to each material, ultrasonic clearly
Wash 15 ~ 18min, remove greasy dirt and the impurity of surface attachment；The most again by go the titanium sponge after the removal of impurity, Cu material, Al material,
Cr material, Ti-Mo material and Al-Nb material are placed in container, add after dehydrated alcohol is all submerged to each material, ultrasonic clearly
Wash 15 ~ 18min, be placed in baking oven drying, obtain the titanium sponge after supersound process, Cu material, Al material, Cr material, Ti-Mo material
Material and Al-Nb material.
Two, dispensing: weigh described component, the sponge weighed after the supersound process that step one obtains of each element equimolar amounts
Titanium, Cu material, Al material, Cr material, Ti-Mo material and Al-Nb material；
Three, high-entropy alloy melting: 1. titanium sponge is put into a melting pond of water cooled copper mould, then step 2 is weighed ultrasonic
Cu material, Al material, Cr material, Ti-Mo material and Al-Nb material after process is placed in another melting pond of cold water copper mold,
It is sequentially placed the most from bottom to top by material melting point, it is ensured that melting uniformity；Wherein, placement from bottom to top order be Al,
Cu、Cr、Al-Nb、Ti-Mo；
2. water cooled copper mould is positioned at smelting furnace, by the vacuum chamber within smelting furnace to 5 × 10-3Pa, is then charged with high-purity
Argon is to 0.01Pa, and this process is above with clean vacuum chambers in triplicate.Wherein, purity >=99.999% of high-purity argon gas, oxygen-containing
Amount≤1.5ppm, nitrogen content≤50ppm, phosphorus content≤4ppm, water content≤3ppm；
First, melting titanium sponge 1～2min under conditions of melting electric current is 200～250A, secondly, step 2 is weighed
After supersound process Cu material, Al material, Cr material, Ti-Mo material and Al-Nb material under 200～250A electric currents melting 1～
2min, obtains ingot bar, and both put together melting 3～5 times subsequently, carries out same after each melting after overturning 180 ° of sample
Electric arc melting, after furnace cooling, obtain TiCu0.5AlCr0.2Mo0.3Nb0.5High-entropy alloy.
The TiCu of the present embodiment gained0.5AlCr0.2Mo0.3Nb0.5High-entropy alloy, density is 4.96g/cm3, microhardness is
752HV, yield strength is 1490MPa, and tensile strength is 1965MPa, and elongation percentage is 14.5%.60 DEG C of sea water soak 60 days, closes
Gold 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 alloy, the component of this high-entropy alloy is TiaCubAlcCrdMoeNbf, wherein, Mole percent
Number for a be 0.9mol, b be 0.6mol, c be 0.2mol, d be 0.5mol, e be 0mol, f be 0.05mol.
The preparation method of a kind of TiCuAlCrNb high-entropy alloy, comprises the following steps:
Step one, titanium sponge, Cu material, Al material and Cr material are placed in container, more respectively with the shape of Ti-Nb intermediate alloy
After formula adds Nb, Ti in a reservoir, after addition acetone is all submerged to each material, ultrasonic cleaning 15 ~ 20min, removes surface
The greasy dirt of attachment and impurity；Titanium sponge, Cu material, Al material, Cr material and Ti-Nb material after the removal of impurity will be removed the most again
It is respectively placed in container, after addition dehydrated alcohol is all submerged to each material, ultrasonic cleaning 15 ~ 20min, it is subsequently placed in baking oven
Middle drying, obtains the titanium sponge after supersound process, Cu material, Al material, Cr material and Ti-Nb material；
Step 2, according to described component, weigh titanium sponge, Cu material that the step one of equimolar amounts or certain mol ratio obtains
Material, Al material, Cr material and Ti-Nb material；
Step 3, take titanium sponge and put into a melting pond of water cooled copper mould, then step 2 is weighed Cu material, Al material,
Cr material and Ti-Nb material are sequentially placed another melting pond of water cooled copper mould the most from bottom to top according to material melting point
In, standby；Wherein, the order of placement from bottom to top is Al, Cu, Cr, Ti-Nb；
Step 4, by the vacuum chamber within smelting furnace to 5 × 10-3Pa, is then charged with argon to 0.01Pa, this step
Above with clean vacuum chambers in triplicate；
Step 5, utilize non-consumable vacuum arc melting technique respectively under 250 ~ 400A melting electric current melting titanium sponge 1 ~
2min, obtains ingot bar A after casting；Cu material, Al material, Cr material and Ti-Nb material in another melting pond 250 ~
Melting 1 ~ 2min under 400A melting electric current, obtains alloy ingot B after casting, ingot bar A and alloy ingot B is put together according to
Preceding method melting 4 ~ 5 times, carries out the melting of same method after each melting after overturning 180 ° of sample, after furnace cooling, prepare
Ti0.9Cu0.6Al0.2Cr0.5Nb0.05High-entropy alloy.
The Ti of the present embodiment gained0.9Cu0.6Al0.2Cr0.5Nb0.05High-entropy alloy, density is 4.81g/cm3, microhardness is
817HV, yield strength is 1410MPa, and tensile strength is 1950MPa, and elongation percentage is 17.5%.60 DEG C of sea water soak 60 days, closes
Gold 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 alloy, the component of this high-entropy alloy is TiaCubAlcCrdMoeNbf, wherein, Mole percent
Number for a be 0.9mol, b be 0.6mol, c be 1.2mol, d be 0.7mol, e be 0mol, f be 0.3mol.
The preparation method of a kind of TiCuAlCrNb high-entropy alloy, the step one of preparation method to step 4 is with embodiment 1, real
Execute in example 4, use electromagnetic levitation-melt technique to Cu material in titanium sponge and another melting pond, Al material, Cr material and
Al-Nb material carries out melting, and the Lorentz force relying on the interphase interaction of electromagnetic field and faradic current to be formed hangs metal bath
Floating, the faradic current utilizing alternating electromagnetic field to produce in coil adds heat fusing metal；Then by the ingot bar A obtained and conjunction
Gold ingot bar B puts together according to electromagnetic levitation-melt technique melting 3 ~ 5 times, carries out same after each melting after overturning 180 ° of sample
The melting of quadrat method, ingot casting composition is more uniform.After furnace cooling, prepare Ti0.9Cu0.6Al1.2Cr0.7Nb0.3High-entropy alloy.
The Ti of the present embodiment gained0.9Cu0.6Al1.2Cr0.7Nb0.3High-entropy alloy, density is 4.86g/cm3, microhardness is
832HV, yield strength is 1425MPa, and tensile strength is 1965MPa, and elongation percentage is 15.2%.60 DEG C of sea water soak 60 days, closes
Gold 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 utilizing electromagnetic force suspension technology to make to melt suspends,
Wherein, logical high-frequency alternating current in coil, melting electric current is 80 ~ 120A；Logical high-frequency alternating magnetic field around coil, produces sense in material
Eddy current, suspending power is answered to reach dynamic balance state with material deadweight.
Embodiment 5
A kind of TiCuAlCrMoNb high-entropy alloy, the component of this high-entropy alloy is TiaCubAlcCrdMoeNbf, wherein, Mole percent
Number for a be 0.3mol, b be 0.2mol, c be 1.5mol, d be 1.2mol, e be 0.7mol, f be 0.05mol.Its preparation method is same
Embodiment 3, the raw material wherein used is titanium sponge, Cu material, Al material, Cr material, Al-Mo material, Ti-Nb material, preparation
Obtain Ti0.3Cu0.2Al1.5Cr1.2Mo0.7Nb0.05High-entropy alloy.
The Ti of the present embodiment gained0.3Cu0.2Al1.5Cr1.2Mo0.7Nb0.05High-entropy alloy, density is 5.28g/cm3, micro-firmly
Degree is 720HV, and yield strength is 1410MPa, and tensile strength is 1865MPa, and elongation percentage is 12.7%.60 DEG C of sea water soak 60
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 alloy, the component of this high-entropy alloy is TiaCubAlcCrdMoeNbf, wherein, Mole percent
Number for a be 1.5mol, b be 1.2mol, c be 0.8mol, d be 0.05mol, e be 1.2mol, f be 1.2mol.Its preparation method is same
Embodiment 1, the raw material wherein used is titanium sponge, Cu material, Al material, Cr material, Al-Mo material, Al-Nb material, preparation
Obtain Ti1.5Cu1.2Al0.8Cr0.05Mo1.2Nb1.2High-entropy alloy.
The Ti of the present embodiment gained1.5Cu1.2Al0.8Cr0.05Mo1.2Nb1.2High-entropy alloy, density is 4.79g/cm3, micro-firmly
Degree is 745HV, and yield strength is 1450MPa, and tensile strength is 1878MPa, and elongation percentage is 11.2%.60 DEG C of sea water soak 60
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 alloy, the component of this high-entropy alloy is TiaCubAlcCrdMoeNbf, wherein, Mole percent
Number for a be 0.6mol, b be 0.7mol, c be 0.2mol, d be 0.6mol, e be 0.5mol, f be 0.6mol.Its preparation method is same
Embodiment 1, the raw material wherein used is titanium sponge, Cu material, Al material, Cr material, Ti-Mo material, Ti-Nb material, preparation
Obtain Ti0.6Cu0.7Al0.2Cr0.6Mo0.5Nb0.6High-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, it is thus achieved that intensity, hardness, plasticity and toughness, corrosion-resistant and anti-
The alloy material of dirty functional coupling, has filled up high-entropy alloy blank in the research of ship domain, has expanded new application direction,
For high-entropy alloy ship domain in future through engineering approaches application feasibility based theoretical.
Claims (7)
1. a TiCuAlCrMoNb high-entropy alloy, it is characterised in that: the component of this 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. the method preparing a kind of TiCuAlCrMoNb high-entropy alloy as claimed in claim 1, it is characterised in that include following
Step:
Step one, titanium sponge, Cu material, Al material and Cr material are placed in container, more respectively with Al-Mo/Ti-Mo, Al-
After the form of Nb/Ti-Nb intermediate alloy adds Mo, Nb, Al and/or Ti in a reservoir, carry out supersound process, standby；
Step 2, according to described component, weigh titanium sponge, Cu that the step one of equimolar amounts or equimultiple mol ratio obtains
Material, Al material, Cr material, Al-Mo/Ti-Mo material, Al-Nb/Ti-Nb material；
Step 3, take titanium sponge and put into a melting pond of water cooled copper mould, the more each material of residue that step 2 is weighed according to
The fusing point of material order the most from bottom to top is sequentially placed in another melting pond of water cooled copper mould, standby；
Step 4, by the vacuum chamber within smelting furnace to 5 × 10-3Pa, is then charged with argon to 0.01Pa, this step weight
Answer more than three times with clean vacuum chambers；
Cu material in step 5, difference melting titanium sponge and another melting pond, Al material, Cr material, Al-Mo/Ti-Mo material
Material and Al-Nb/Ti-Nb material, obtain ingot bar A and alloy ingot B after casting successively, ingot bar A and alloy ingot B be placed on one
After Qiing, melting 3 ~ 5 times, carry out the melting of same method after overturning 180 ° of sample after each melting, after furnace cooling, prepare
TiCuAlCrMoNb high-entropy alloy.
The preparation method of a kind of TiCuAlCrMoNb high-entropy alloy the most according to claim 2, it is characterised in that: step one
The purity of Cu material, Al material, Cr material, Al-Mo/Ti-Mo material and Al-Nb/Ti-Nb material used be 99.9% with
On.
The preparation method of a kind of TiCuAlCrMoNb high-entropy alloy the most according to claim 2, it is characterised in that: step one
In the method for supersound process be: add after acetone is all submerged to each material in container, ultrasonic cleaning 15 ~ 20min, go
Greasy dirt and impurity except surface attachment；The titanium sponge after the removal of impurity, Cu material, Al material, Cr material, Al-Mo/ will be removed the most again
Ti-Mo material and Al-Nb/Ti-Nb material are respectively placed in container, after addition dehydrated alcohol is all submerged to each material, super
Sound cleans 15 ~ 20min, is subsequently placed in baking oven drying, obtains the titanium sponge after supersound process, Cu material, Al material, Cr material
Material, Al-Mo/Ti-Mo material and Al-Nb/Ti-Nb material.
The preparation method of a kind of TiCuAlCrMoNb high-entropy alloy the most according to claim 2, it is characterised in that: step 4
Vacuum chamber in, purity >=99.999% of argon, oxygen content≤1.5ppm, nitrogen content≤50ppm, phosphorus content≤4ppm, aqueous
Amount≤3ppm.
The preparation method of a kind of TiCuAlCrMoNb high-entropy alloy the most according to claim 2, it is characterised in that: step 5
In, utilize non-consumable vacuum arc melting technique to carry out melting, wherein, melting 1 under titanium sponge 200 ~ 400A melting electric current ~
2min, obtains alloy ingot A；Under 200 ~ 400A electric current the Cu material in another melting pond of melting, Al material, Cr material,
Al-Mo/Ti-Mo material and Al-Nb/Ti-Nb material 1 ~ 2min, obtain alloy ingot B.
The preparation method of a kind of TiCuAlCrMoNb high-entropy alloy the most according to claim 2, it is characterised in that: step 5
In, use electromagnetic levitation-melt technique to Cu material, Al material, Cr material, Al-Mo/ in titanium sponge and another melting pond
Ti-Mo material and Al-Nb/Ti-Nb material carry out melting, rely on the long-range navigation that the interphase interaction of electromagnetic field and faradic current is formed
Hereby power suspends metal bath get up, and the faradic current utilizing alternating electromagnetic field to produce in coil adds heat fusing metal.
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