CN104152781A - A high-entropy alloy of AlCoFeNiSi and a preparation method thereof - Google Patents
A high-entropy alloy of AlCoFeNiSi and a preparation method thereof Download PDFInfo
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Abstract
A high-entropy alloy of AlCoFeNiSi and a preparation method thereof are provided. The present invention relates to a high-entropy alloy and a preparation method thereof. The object of the present invention is to solve the problem of the conventional structural steel that the heat resistance is not high. The method comprises the following steps: I. ultrasonic treatment: ultrasonically cleaning Al material, Co material, Cu material, Fe material, Ni material and Si material with an acetone solution and absolute ethyl alcohol successively; II. Weighing: getting alloy materials of equal molar weight through weighing; III. high-entropy alloy smelting: obtaining ingots of ellipsoid-shaped high-entropy alloy of AlCoFeNiSi. The high-entropy alloy of AlCoFeNiSi prepared according to the present invention has a simple body-centered cubic structure and a face-centered cubic structure, the yield strength reaches up to 1781.6MPa, and the breaking strength reaches up to 1895.2MPa. The high-entropy alloy of the present invention can be applied to bearing structures in the heat resistance field as structural material, such as utility boilers.
Description
Technical field
The present invention relates to a kind of high-entropy alloy and preparation method thereof.
Background technology
All the time, the method of design of conventional alloys is all to using one or both elements as major components, by adding other yuan, usually improve again tissue and the performance of material, as two component system intermetallic compound, aluminium alloy, titanium alloy, magnesium alloy and block amorphous alloys etc. such as stainless steel, Ti-Al.Conventional crystal theory thinks, in alloy, constituent element too much can cause forming compound and other complex organizations between various metals, makes alloy lose mechanical property, is difficult to obtain practical application.Development along with modern industry, material has been proposed to more and more higher performance requriements: excellent mechanical property, high temperature resistant, corrosion-resistant, soft magnetism etc., although improve the use properties of material by new material processing techniques such as rapid solidification, laser processing, but can not meet industrial application requirement.
On the other hand, through the development of centuries, it is saturated that the development of conventional alloys system has been tending towards.Breakthrough be take one or both metallic elements and is that the mentality of designing of main conventional alloys has become the inevitable requirement of metallic substance development.High-entropy alloy grows up just under such trend.
2004, TaiWan, China scholar professor Ye Junwei broke the single principal element Design Mode of conventional alloys completely, has started metallic substance and has completely newly studied frontier.High-entropy alloy no longer be take single-element as main, and adopts the mode of multiple principal element.Professor Ye Junwei thinks after many pivots alloy graining not only can not form numerous intermetallic compound, can form on the contrary simple body-centered cubic or face-centered cubic phase, the number of phases that the gained number of phases is predicted well below balance one after another.He thinks that this is because many pivots alloy has the high entropy of mixing, thereby has suppressed the appearance of intermetallic compound.And then, by many pivots of many pivots alloy called after high-entropy alloy, and provide the definition of many pivots high-entropy alloy: principal element number n >=5, and the alloy that wherein atomic percent of every kind of principal element is 5%～35%.Therefore in many pivots high-entropy alloy, do not have a kind of constituent element quantitatively can surpass more than 50%, and then become unique principal element.The proposition of many pivots alloy designs theory, has opened up wide brand-new alloy system.Many pivots alloy has excellent characteristic, comprises high rigidity, large work hardening, high temperature resistance is softening, corrosion-resistant and high resistivity etc., makes high-entropy alloy application colorful colourful, as high rigidity and anti-corrosion instrument, mould, the cutter of wear-resistant temperature-resistant; The stiff dough of the golf ring head scope of attack, oil pressure atmospheric pressure pole, steel pipe and roll-in cylinder; The magnetic core of high-frequency transformer, motor, carbon shielding, magnetic head, disk, magneto-optic disk, high-frequency soft magnetic thin film material; The corrosion-proof and high-strength degree material of chemical plant, ships; The refractory materials of turbine blade, welding material, heat exchange heat exchanger and High Temperature Furnaces Heating Apparatus, the fire-resistant skeleton in superelevation building, the anti-diffusion film of spraymetal material and micro electronmechanical material etc.Due to application potential diversification, there is wide diversification of industry prospect, therefore the research and development of many pivots alloy lifting metallurgical to tradition and steel industry is significant undoubtedly.Therefore exploitation has the AlCoCuFeNiSi high-entropy alloy of excellent mechanical performances, has extremely important meaning.
In heat-resisting occasions such as station boilers, need heat resistant structure material, the thermostability that high-entropy alloy has can be brought into play its excellent properties in this application scenario, how to develop and there is high-intensity high-entropy alloy to meet hot environment military service demand, becoming the prerequisite that high-entropy alloy moves towards large-scale industrial application, is also the current demand of high-temperature service environment to novel material research and development.
Summary of the invention
The object of the invention is to solve the not high problem of existing structure steel resistance toheat, and a kind of AlCoCuFeNiSi high-entropy alloy and preparation method thereof is provided.
A kind of AlCoCuFeNiSi high-entropy alloy of the present invention is elementary composition by Al, Co, Cu, Fe, Ni and Si;
In described a kind of AlCoCuFeNiSi high-entropy alloy, the mol ratio of any two elements is 1:1.
The preparation method of a kind of AlCoCuFeNiSi high-entropy alloy of the present invention specifically completes according to the following steps:
One, supersound process: by Al material, Co material, Cu material, Fe material, Ni material and Si material are placed in container, then add acetone soln, ultrasonic cleaning 20min～30min, remove greasy dirt and the impurity of surface attachment, obtain the Al material after removal of impurities, Co material, Cu material, Fe material, Ni material and Si material, again by the Al material after removal of impurities, Co material, Cu material, Fe material, Ni material and Si material are placed in container, add dehydrated alcohol ultrasonic cleaning 20min～30min, then being placed in drying baker dries, obtain the Al material after supersound process, Co material, Cu material, Fe material, Ni material and Si material,
Two, weighing: take Al material, Co material, Cu material, Fe material, Ni material and Si material after the supersound process that the step 1 of equimolar amount obtains;
Three, melting high-entropy alloy: a melting pond 1. titanium sponge being put into water cooled copper mould, Al material after the supersound process again step 2 being taken, Co material, Cu material, Fe material, Ni material and Si material are placed in another melting pond of water cooled copper mould, according to each material melting point height, by material melting point, place successively from the bottom up from low to high, material is built bell after putting, and tightens sample chamber knob; 2. smelting furnace being vacuumized, is 1 * 10 in vacuum tightness
-3during Pa, being filled with argon gas to pressure is 0.5atm～1atm; 3. repeating step is 2. 3 times～5 times; 4. under the condition that is 250A～300A at melting electric current, melt back titanium sponge is 3 times～5 times, each melting 60s～120s; 5. under the condition that is 250A～300A at melting electric current melting step 1. in Al material, Co material, Cu material, Fe material, Ni material and Si material 60s～120s after the supersound process that takes of step 2, obtain ingot bar; 6. the upset of the ingot bar after 5. by step, melting 60s～120s under the condition that is then 250A～300A at melting electric current; 7. repeating step is 6. 6 times～7 times, and furnace cooling obtains ellipsoid shape AlCoCuFeNiSi high-entropy alloy; The quality of the titanium sponge of step described in is 1. 40g～100g.
In the present invention step 2. with step 3. object be gas washing, repeatedly charge and discharge the air content that argon gas makes smelting furnace and reduce to minimum.
In the present invention, step object is 4. by melting titanium sponge, remaining oxygen to be eliminated as far as possible.
Advantage of the present invention: AlCoCuFeNiSi high-entropy alloy prepared by the present invention has excellent mechanical property, this high-entropy alloy has simple body-centered cubic structure and face-centred cubic structure, there is very high yield strength and breaking tenacity, yield strength is up to 1781.6MPa, breaking tenacity is up to 1895.2MPa, make it meet the requirement to material mechanical performance in modern industry, high-entropy alloy is used widely at industrial circle.
Accompanying drawing explanation
Fig. 1 is the AlCoCuFeNiSi high-entropy alloy XRD figure spectrum of test one preparation;
Fig. 2 is microstructure (X1000) photo of the AlCoCuFeNiSi high-entropy alloy of test one preparation;
Fig. 3 is microstructure (X4000) photo of the AlCoCuFeNiSi high-entropy alloy of test one preparation;
Fig. 4 is that the EDX of the AlCoCuFeNiSi high-entropy alloy of test one preparation analyzes column diagram; Wherein 1 is rich Cu/Al phase, class Cu
3al; 2 is poor Cu phase; 3 approach the dendrite phase of nominal composition for composition.
Fig. 5 is the Al Element area profile of the AlCoCuFeNiSi high-entropy alloy of test one preparation;
Fig. 6 is the Co Element area profile of the AlCoCuFeNiSi high-entropy alloy of test one preparation;
Fig. 7 is the Cu Element area profile of the AlCoCuFeNiSi high-entropy alloy of test one preparation;
Fig. 8 is the Fe Element area profile of the AlCoCuFeNiSi high-entropy alloy of test one preparation;
Fig. 9 is the Ni Element area profile of the AlCoCuFeNiSi high-entropy alloy of test one preparation;
Figure 10 is the Si Element area profile of the AlCoCuFeNiSi high-entropy alloy of test one preparation;
Figure 11 is true strain-true stress graphic representation of the AlCoCuFeNiSi high-entropy alloy of test one preparation;
Figure 12 is the compression fracture morphology figure of the AlCoCuFeNiSi high-entropy alloy of test one preparation;
Figure 13 is the enlarged view at a place in Figure 12.
Embodiment
Embodiment one: a kind of AlCoCuFeNiSi high-entropy alloy of present embodiment is elementary composition by Al, Co, Cu, Fe, Ni and Si;
In described a kind of AlCoCuFeNiSi high-entropy alloy, the mol ratio of any two elements is 1:1.
Embodiment two: the preparation method of a kind of AlCoCuFeNiSi high-entropy alloy of present embodiment specifically completes according to the following steps:
One, supersound process: by Al material, Co material, Cu material, Fe material, Ni material and Si material are placed in container, then add acetone soln, ultrasonic cleaning 20min～30min, remove greasy dirt and the impurity of surface attachment, obtain the Al material after removal of impurities, Co material, Cu material, Fe material, Ni material and Si material, again by the Al material after removal of impurities, Co material, Cu material, Fe material, Ni material and Si material are placed in container, add dehydrated alcohol ultrasonic cleaning 20min～30min, then being placed in drying baker dries, obtain the Al material after supersound process, Co material, Cu material, Fe material, Ni material and Si material,
Two, weighing: take Al material, Co material, Cu material, Fe material, Ni material and Si material after the supersound process that the step 1 of equimolar amount obtains;
Three, melting high-entropy alloy: a melting pond 1. titanium sponge being put into water cooled copper mould, Al material after the supersound process again step 2 being taken, Co material, Cu material, Fe material, Ni material and Si material are placed in another melting pond of water cooled copper mould, according to each material melting point height, by material melting point, place successively from the bottom up from low to high, material is built bell after putting, and tightens sample chamber knob; 2. smelting furnace being vacuumized, is 1 * 10 in vacuum tightness
-3during Pa, being filled with argon gas to pressure is 0.5atm～1atm; 3. repeating step is 2. 3 times～5 times; 4. under the condition that is 250A～300A at melting electric current, melt back titanium sponge is 3 times～5 times, each melting 60s～120s; 5. under the condition that is 250A～300A at melting electric current melting step 1. in Al material, Co material, Cu material, Fe material, Ni material and Si material 60s～120s after the supersound process that takes of step 2, obtain ingot bar; 6. the upset of the ingot bar after 5. by step, melting 60s～120s under the condition that is then 250A～300A at melting electric current; 7. repeating step is 6. 6 times～7 times, and furnace cooling obtains ellipsoid shape AlCoCuFeNiSi high-entropy alloy; The quality of the titanium sponge of step described in is 1. 40g～100g.
In the present invention step 2. with step 3. object be gas washing, repeatedly charge and discharge the air content that argon gas makes smelting furnace and reduce to minimum.
In the present invention, step object is 4. by melting titanium sponge, remaining oxygen to be eliminated as far as possible.
Embodiment three: present embodiment is different from embodiment two: the purity of the Al material described in step 1, Co material, Cu material, Fe material, Ni material and Si material all >=99.9%.Other steps and parameter are identical with embodiment two.
Embodiment four: present embodiment is different from embodiment two or three: the form of the Al material described in step 1, Co material, Cu material, Fe material, Ni material and Si material is the form except powdery.Other steps and parameter are identical with embodiment two or three.
Present embodiment is for guaranteeing under blow force of arc effect without material unaccounted-for (MUF).
Embodiment five: present embodiment is different from one of embodiment two to four: the form of the Al material described in step 1, Co material, Cu material, Fe material, Ni material and Si material is bulk, sheet or thread.Other steps and parameter are identical with one of embodiment two to four.
Embodiment six: present embodiment is different from one of embodiment two to five: the drying baker that is placed in described in step 1 is dried, its drying course is dried 20min～40min under being the condition of 40～60 ℃ in temperature.Other steps and parameter are identical with one of embodiment two to five.
Embodiment seven: present embodiment is different from one of embodiment two to six: the drying baker that is placed in described in step 1 is dried, its drying course is dried 30min under being the condition of 50 ℃ in temperature.Other steps and parameter are identical with one of embodiment two to six.
Adopt following verification experimental verification beneficial effect of the present invention:
The preparation method of a kind of AlCoCuFeNiSi high-entropy alloy of test one, this test carries out according to the following steps:
One, supersound process: by Al material, Co material, Cu material, Fe material, Ni material and Si material are placed in container, then add acetone soln, ultrasonic cleaning 25min, remove greasy dirt and the impurity of surface attachment, obtain the Al material after removal of impurities, Co material, Cu material, Fe material, Ni material and Si material, again by the Al material after removal of impurities, Co material, Cu material, Fe material, Ni material and Si material are placed in container, add dehydrated alcohol ultrasonic cleaning 25min, then being placed in drying baker dries, obtain the Al material after supersound process, Co material, Cu material, Fe material, Ni material and Si material,
Two, weighing: take Al material 3.6950g, Co material 8.0707g, Cu material 8.7024g, Fe material 7.6478g, Ni material 8.0379g and Si material 3.8462g after the supersound process that step 1 obtains;
Three, melting high-entropy alloy: a melting pond the 1. titanium sponge of 50g being put into water cooled copper mould, Al material after the supersound process again step 2 being taken, Co material, Cu material, Fe material, Ni material and Si material are placed in another melting pond of water cooled copper mould, according to each material melting point height, by material melting point, place successively from the bottom up from low to high, material is built bell after putting, and tightens sample chamber knob; 2. smelting furnace being vacuumized, is 1 * 10 in vacuum tightness
-3during Pa, being filled with argon gas to pressure is 1atm; 3. repeating step is 2. 5 times; 4. under the condition that is 300A at melting electric current, melt back titanium sponge is 4 times, each melting 120s; 5. under the condition that is 300A at melting electric current melting step 1. in Al material, Co material, Cu material, Fe material, Ni material and Si material 120s after the supersound process that takes of step 2, obtain ingot bar; 6. the upset of the ingot bar after 5. by step, melting 100s under the condition that is then 300A at melting electric current; 7. repeating step is 6. 6 times, and furnace cooling obtains ellipsoid shape AlCoCuFeNiSi high-entropy alloy.
The purity of the Al material described in step 1, Co material, Cu material, Fe material, Ni material and Si material all >=99.9%.
The form of the Al material described in step 1, Co material, Cu material, Fe material, Ni material and Si material is bulk.
Described in step 1, add acetone soln, ultrasonic cleaning, the amount of acetone soln is for making Al material, Co material, Cu material, Fe material, Ni material and the complete submergence of Si material.
Described in step 1, add dehydrated alcohol, ultrasonic cleaning, the amount of acetone soln is for making Al material, Co material, Cu material, Fe material, Ni material and the complete submergence of Si material.
The drying baker that is placed in described in step 2 is dried, and its drying course is dried 30min under being the condition of 50 ℃ in temperature.
(1) utilize line cutting from cut out the sample of Ф 6mm * 5mm from testing the AlCoCuFeNiSi high-entropy alloy ingot casting of a preparation, sample is ground with the waterproof abrasive paper son of 80#, 120#, 200#, 400#, 600#, 800#, 1000#, 1200#, 1500# and 2000# successively, AlCoCuFeNiSi high-entropy alloy after being ground, AlCoCuFeNiSi high-entropy alloy sample after re-using X-ray diffractometer metallographic being ground carries out phase composite composition analysis, and scanning step is 0.02s
-1, the scope of scanning angle 2 θ is 20 °～100 °; As shown in Figure 1, Fig. 1 is the AlCoCuFeNiSi high-entropy alloy XRD figure spectrum of test one preparation to test result, and in figure, " ■ " represents FCC, and "●" represents BCC; As can be seen from Figure 1, the AlCoCuFeNiSi high-entropy alloy of test one preparation consists of BCC and FCC sosoloid, and wherein FCC is principal phase, and BCC is time phase.
Fig. 2 is microstructure (X1000) photo of the AlCoCuFeNiSi high-entropy alloy of test one preparation; Fig. 3 is microstructure (X4000) photo of the AlCoCuFeNiSi high-entropy alloy of test one preparation; Fig. 4 is that the EDX of the AlCoCuFeNiSi high-entropy alloy of test one preparation analyzes column diagram.
As can be seen from Figure 2 the AlCoCuFeNiSi high-entropy alloy actual average composition of testing a preparation departs from nominal composition, and wherein Al, Si element be higher than nominal composition, and Cu, Fe and Ni are lower than nominal composition.Alloy is total three-phase always, and wherein dendritic structure is BCC phase, and intergranular structure is FCC phase.
Actual average composition quality percentage composition: Al:18.4at.%, Co:16.6at.%, Cu:14.4at.%, Fe:15.9at.%, Ni:16.2at.%, Si:18.5at.%.
In Fig. 3,1 is rich Cu/Al phase, class Cu
3al phase, 2 is poor Cu phase, 3 approach the dendrite phase of nominal composition for composition.
In Fig. 4,1 is rich Cu/Al phase, class Cu
3al phase, 2 is poor Cu phase, 3 approach the dendrite phase of nominal composition for composition
(3) adopt the AlCoCuFeNiSi high-entropy alloy of Quanta 200F Electronic Speculum test one preparation be furnished with EDX system to carry out each phase chemistry compositional analysis, obtain as shown in table 1 every mutually in the EDX detected value of each element.
Table 1 is that each phase chemistry of AlCoCuFeNiSi high-entropy alloy forms (at.%)
In table 1, dentrite DR-A is the dentrite that composition approaches nominal composition; Dentrite DR-B is poor Cu phase; Interdendritic ID is rich Cu/Al phase, class Cu
3al phase.
(4) face that adopts the Quanta 200F Electronic Speculum be furnished with EDX system to carry out each element to testing the AlCoCuFeNiSi high-entropy alloy of a preparation distributes and the detection of segregation, the face that obtains Al element in AlCoCuFeNiSi high-entropy alloy, Co element, Cu element, Fe element, Ni element and Si element distribute and segregation map as shown in Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 and Figure 10.
(5) utilize line cutting from testing the AlCoCuFeNiSi high-entropy alloy of a preparation, to cut out the sample of Ф 6mm * 5mm, sample is ground with the waterproof abrasive paper son of 80#, 120#, 200#, 400#, 600#, 800#, 1000#, 1200#, 1500# and 2000# successively, then use polishing machine to carry out polishing, use HDX-1000TM vickers microhardness to measure the microhardness of the AlCoCuFeNiSi high-entropy alloy after polishing, the load loading during experiment is 50g, keeps 10s; The data of 7 points of AlCoCuFeNiSi high-entropy alloy random test after polishing, remove after maximin, the mean value of 5 points of residue is the microhardness of the AlCoCuFeNiSi high-entropy alloy of test one preparation, and test result is the microhardness 688HV of the AlCoCuFeNiSi high-entropy alloy of test one preparation.
(6) 3 of the cylindrical sample of the AlCoCuFeNiSi high-entropy alloy of test one preparation being reduced out to Ф 4mm * 6mm; On Instron 5569 universal electrical trier, carry out room temperature compression verification, loading rate is 0.5mm/min, uses Origin software to draw compression true strain-true stress curve packed data.Compressive Mechanical Properties is listed in table 2, and compression curve as shown in figure 11.
Table 2AlCoCuFeNiSi high-entropy alloy Compressive Mechanical Properties and hardness value
From table 2 and Figure 11, can find out, the AlCoCuFeNiSi high-entropy alloy of test one preparation is compared with conventional alloys, has high rigidity, high compression yield strength, breaking tenacity, and yield strength is up to 1781.6MPa, and breaking tenacity is up to 1895.2MPa.Its high rigidity comes from the acting in conjunction of solution strengthening, precipitation strength and Nano compound strengthening.
(6) adopt the Quanta 200F Electronic Speculum be furnished with EDX system to observe its fracture property to testing the AlCoCuFeNiSi high-entropy alloy of a preparation, obtain compressing fracture morphology figure as Figure 12 and Figure 13, wherein Figure 13 is the enlarged view at a place in Figure 12.
Claims (7)
1. an AlCoCuFeNiSi high-entropy alloy, is characterized in that a kind of AlCoCuFeNiSi high-entropy alloy is elementary composition by Al, Co, Cu, Fe, Ni and Si;
In described a kind of AlCoCuFeNiSi high-entropy alloy, the mol ratio of any two elements is 1:1.
2. a preparation method for AlCoCuFeNiSi high-entropy alloy, is characterized in that a kind of preparation method of AlCoCuFeNiSi high-entropy alloy specifically completes according to the following steps:
One, supersound process: by Al material, Co material, Cu material, Fe material, Ni material and Si material are placed in container, then add acetone soln, ultrasonic cleaning 20min～30min, remove greasy dirt and the impurity of surface attachment, obtain the Al material after removal of impurities, Co material, Cu material, Fe material, Ni material and Si material, again by the Al material after removal of impurities, Co material, Cu material, Fe material, Ni material and Si material are placed in container, add dehydrated alcohol ultrasonic cleaning 20min～30min, then being placed in drying baker dries, obtain the Al material after supersound process, Co material, Cu material, Fe material, Ni material and Si material,
Two, weighing: take Al material, Co material, Cu material, Fe material, Ni material and Si material after the supersound process that the step 1 of equimolar amount obtains;
Three, melting high-entropy alloy: a melting pond 1. titanium sponge being put into water cooled copper mould, Al material after the supersound process again step 2 being taken, Co material, Cu material, Fe material, Ni material and Si material are placed in another melting pond of water cooled copper mould, according to each material melting point height, by material melting point, place successively from the bottom up from low to high, material is built bell after putting, and tightens sample chamber knob; 2. smelting furnace being vacuumized, is 1 * 10 in vacuum tightness
-3during Pa, being filled with argon gas to pressure is 0.5atm～1atm; 3. repeating step is 2. 3 times～5 times; 4. under the condition that is 250A～300A at melting electric current, melt back titanium sponge is 3 times～5 times, each melting 60s～120s; 5. under the condition that is 250A～300A at melting electric current melting step 1. in Al material, Co material, Cu material, Fe material, Ni material and Si material 60s～120s after the supersound process that takes of step 2, obtain ingot bar; 6. the upset of the ingot bar after 5. by step, melting 60s～120s under the condition that is then 250A～300A at melting electric current; 7. repeating step is 6. 6 times～7 times, and furnace cooling obtains ellipsoid shape AlCoCuFeNiSi high-entropy alloy; The quality of the titanium sponge of step described in is 1. 40g～100g.
3. the preparation method of a kind of AlCoCuFeNiSi high-entropy alloy according to claim 2, is characterized in that the purity of the Al material described in step 1, Co material, Cu material, Fe material, Ni material and Si material all >=99.9%.
4. the preparation method of a kind of AlCoCuFeNiSi high-entropy alloy according to claim 2, is characterized in that the form of the Al material described in step 1, Co material, Cu material, Fe material, Ni material and Si material is the form except powdery.
5. the preparation method of a kind of AlCoCuFeNiSi high-entropy alloy according to claim 2, is characterized in that the form of the Al material described in step 1, Co material, Cu material, Fe material, Ni material and Si material is bulk, sheet or thread.
6. the preparation method of a kind of AlCoCuFeNiSi high-entropy alloy according to claim 2, is characterized in that the drying baker that is placed in described in step 1 dries, and its drying course is for being to dry 20min～40min under the condition of 40～60 ℃ in temperature.
7. the preparation method of a kind of AlCoCuFeNiSi high-entropy alloy according to claim 2, is characterized in that the drying baker that is placed in described in step 1 dries, and its drying course is for being to dry 30min under the condition of 50 ℃ in temperature.
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| CN104611604B (en) * | 2014-11-26 | 2016-10-19 | 沈阳航空航天大学 | A kind of lightweight high-entropy alloy of tetragonal crystalline structure and preparation method thereof |
| CN107130124A (en) * | 2017-04-21 | 2017-09-05 | 北京科技大学 | A kind of method that increases material manufacturing technology shapes high-entropy alloy |
| CN107034410A (en) * | 2017-05-12 | 2017-08-11 | 南昌大学 | A kind of many pivot high-entropy alloys and preparation method thereof |
| CN107739958A (en) * | 2017-10-24 | 2018-02-27 | 辽宁工业大学 | A kind of high-entropy alloy containing eutectic structure and preparation method thereof |
| CN107739958B (en) * | 2017-10-24 | 2019-10-11 | 辽宁工业大学 | A kind of high-entropy alloy and preparation method thereof containing eutectic structure |
| CN108179345A (en) * | 2018-01-31 | 2018-06-19 | 湘潭大学 | A kind of wear-resisting, anti-corrosion CrVNiHfNb high-entropy alloys and preparation method thereof |
| CN108504881A (en) * | 2018-04-09 | 2018-09-07 | 山东农业大学 | A method of improving high-entropy alloy wear-resisting property |
| CN111250693A (en) * | 2020-01-19 | 2020-06-09 | 中国人民解放军陆军装甲兵学院 | High-entropy alloy powder for additive remanufacturing and preparation method thereof |
| CN111250693B (en) * | 2020-01-19 | 2022-08-09 | 中国人民解放军陆军装甲兵学院 | High-entropy alloy powder for additive remanufacturing and preparation method thereof |
| CN114000028A (en) * | 2021-10-13 | 2022-02-01 | 中国航发北京航空材料研究院 | NiCoFeCuSiB high-entropy alloy brazing filler metal and preparation method thereof |
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