CN113235033B - Method for enhancing hardness of high-entropy alloy through electric pulse treatment - Google Patents
Method for enhancing hardness of high-entropy alloy through electric pulse treatment Download PDFInfo
- Publication number
- CN113235033B CN113235033B CN202110512953.6A CN202110512953A CN113235033B CN 113235033 B CN113235033 B CN 113235033B CN 202110512953 A CN202110512953 A CN 202110512953A CN 113235033 B CN113235033 B CN 113235033B
- Authority
- CN
- China
- Prior art keywords
- electric pulse
- entropy alloy
- pulse treatment
- treatment
- hardness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F3/00—Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
The invention relates to a method for enhancing the hardness of a high-entropy alloy by electric pulse treatment, and belongs to the technical field of strengthening and toughening treatment of alloy materials. The method comprises the following steps: mixing Al0.1The CoCrFeNi high-entropy alloy is subjected to electric pulse treatment for 5 to 20 times, and single electric pulse treatmentThe time of the impact treatment is 0.1 s-1 s, the time interval of two adjacent electric pulse treatments is 10 s-60 s, and the current density of the electric pulse treatment is 10A/mm2～100A/mm2And the current density of each electric pulse treatment is the same, and after the electric pulse treatment is finished, the treated Al is added0.1The CoCrFeNi high-entropy alloy is naturally cooled to obtain Al after electric pulse treatment0.1CoCrFeNi high entropy alloy. The method has the characteristics of short time, high efficiency and green, and can enhance Al0.1Hardness of CoCrFeNi high entropy alloy.
Description
Technical Field
The invention relates to a method for enhancing the hardness of a high-entropy alloy by electric pulse treatment, in particular to a method for enhancing Al by electric pulse treatment0.1A method for improving the hardness of CoCrFeNi high-entropy alloy belongs to the technical field of strengthening and toughening treatment of alloy materials.
Background
In recent years, under the guidance of a multi-component alloy design idea, researchers discover a novel metal material, namely a high-entropy alloy, which has both structural disorder and chemical disorder by changing and regulating the configuration entropy of an alloy system. Thermodynamically, high entropy alloys have lower gibbs free energy and therefore exhibit higher phase and structure stability. The high entropy alloy, in turn, exhibits slow or retarded diffusion characteristics in kinetics due to lattice distortion effects of the structure. In terms of performance, the high-entropy alloy also exhibits compressive strength, toughness and thermal stability superior to those of conventional metallic materials. In conclusion, the high-entropy alloy has a unique alloy design concept and a remarkable high mixed entropy effect, so that the formed high-entropy alloy solid solution alloy has a huge potential application value and is expected to be used in the fields of heat-resistant and wear-resistant coatings, die linings, hard alloys, high-temperature alloys and the like.
At present, Al0.1CoCrFeNi belongs to one of high-entropy alloy systems which are widely researched, and research shows that Al0.1CoCrFeNi is a single-phase solid solution with a simple Face-Centered Cubic (FCC) structure at both high and low temperatures, and has excellent structural stability. Further, Al0.1The CoCrFeNi high-entropy alloy also shows excellent mechanical properties of high impact toughness, high tensile strength and high plasticity. However, like other FCC high entropy alloys, Al0.1The CoCrFeNi high-entropy alloy has the defect of low hardness, so that the application of the CoCrFeNi high-entropy alloy in a practical scene is influenced.
To improve Al0.1The problem of low hardness of the CoCrFeNi high-entropy alloy can be solved by adopting the traditional heat treatment, and the traditional heat treatment is generally to heat up an alloy sample by heat conduction or heat radiation in a heating furnace. However, the conventional heat treatment requires a long treatment time and consumes a large amount of energy. In addition, a large energy loss is often associated with the heating and cooling process over a long period of time. Therefore, the conventional heat treatment process is not an energy-saving and efficient process. Therefore, the optimization of the processing technology of the alloy material and the improvement of the energy utilization rate in the processing process need to be solved urgently.
The electric pulse treatment is used as an instantaneous high-energy input technology, the microstructure of the alloy can be improved, the performance of the alloy is further improved, and the electric pulse treatment also has the advantages of high efficiency, economy, energy conservation and environmental protection.
In the process of electric pulse treatment, joule heating effect, electromigration effect (directional movement of charged particles or cavities under the action of an electric field), skin effect (phenomenon that current density of high-frequency current is not uniformly distributed in the direction of a cross section when the high-frequency current passes through a conductor), electron wind effect (momentum generated by violent collision of a large amount of rapidly-moving free electrons and atoms) and hot-pressing stress (stress caused by asynchronous temperature rise and thermal expansion inside a material) caused by pulse current can have great influence on material tissues. Therefore, the structure and the performance of the alloy material can be rapidly improved and enhanced within microsecond or millisecond time by the electric, thermal and force three-field coupling effect induced by the high-density pulse current, namely, the structure of the alloy can be effectively controlled by adjusting the energy input of the electric pulse, and further the regulation and control of the alloy performance are realized.
In order to solve the problems of long production period, high production cost and low energy utilization rate of the traditional heat treatment, the electric pulse is utilized to treat the Al0.1The CoCrFeNi high-entropy alloy and a method for enhancing the hardness of the alloy are not reported at present.
Disclosure of Invention
In view of the above, the present invention aims to provide a method for enhancing the hardness of high-entropy alloy by electric pulse treatment, and particularly to provide a method for enhancing Al by electric pulse treatment0.1The method for improving the hardness of the CoCrFeNi high-entropy alloy has the characteristics of short time, high efficiency and green color, and can enhance Al0.1Hardness of CoCrFeNi high entropy alloy.
In order to achieve the purpose of the invention, the following technical scheme is provided.
A method for enhancing the hardness of a high-entropy alloy by electric pulse treatment comprises the following steps:
mixing Al0.1The CoCrFeNi high-entropy alloy is subjected to electric pulse treatment, the frequency of the electric pulse treatment is 5-20 times, the time of single electric pulse treatment is 0.1-1 s, the time interval of two adjacent electric pulse treatments is 10-60 s, and the current density of the electric pulse treatment is 10A/mm2～100A/mm2And the current density of each electric pulse treatment is the same, and after the electric pulse treatment is finished, the treated Al is added0.1The CoCrFeNi high-entropy alloy is naturally cooled to obtain Al after electric pulse treatment0.1CoCrFeNi high entropy alloy.
The Al is0.1The raw materials Al, Co, Cr, Fe and Ni used by the CoCrFeNi high-entropy alloy are all metals with the purity of more than or equal to 99.9 percent.
Preferably, the electrical pulses output during the electrical pulse treatment are in the form of a pulsed square wave.
Preferably, the number of electric pulse treatments is 10.
Preferably, the time for the single electrical pulse treatment is 0.5 s.
Preferably, the time interval between two adjacent electric pulse treatments is 30 s.
Preferably, the electric pulse treatment has a current density of 90A/mm2。
Advantageous effects
(1) The invention provides a method for enhancing the hardness of high-entropy alloy by electric pulse treatment, which is characterized in that an electric pulse mode is adopted to treat Al0.1The CoCrFeNi high-entropy alloy has the characteristics of short time, high efficiency and energy conservation, so that the method has the characteristics of rapidness, high efficiency and greenness; meanwhile, the method can obviously improve Al in a short time0.1The hardness of the CoCrFeNi high-entropy alloy not only makes up for Al0.1The defects of the CoCrFeNi high-entropy alloy in the aspect of hardness performance are overcome, and the disadvantages of long production period, high production cost and serious pollution of the traditional heat treatment are avoided.
(2) The invention provides a method for enhancing the hardness of high-entropy alloy by electric pulse treatment, which adopts an electric pulse technology to treat Al0.1The CoCrFeNi high-entropy alloy can greatly reduce Al by the coupling effect of the thermal effect and the non-thermal effect of the electric pulse0.1The recrystallization nucleation thermodynamic barrier of the CoCrFeNi high-entropy alloy promotes the diffusion of solute atoms of the high-entropy alloy, thereby shortening the local recrystallization time of the high-entropy alloy and simultaneously changing the preferred orientation of the crystal face of the high-entropy alloy. Further, Al0.1The improvement of the diffusion capacity of the atoms of the solute of the CoCrFeNi high-entropy alloy also enhances the chemical disorder and the structural disorder of the CoCrFeNi high-entropy alloy, and finally causes the aggravation of the lattice distortion degree of the high-entropy alloy on the micro scale so as to influence the hardness of the high-entropy alloy0.1The hardness of the CoCrFeNi high-entropy alloy is increased.
(3) According to the method for enhancing the hardness of the high-entropy alloy through electric pulse treatment, when the pulse form is pulse square waves, the change of current density is small in the process of applying the electric pulse treatment, the energy output in the process of periodically and continuously treating the electric pulse is concentrated and stable, the microstructure evolution of the high-entropy alloy can be effectively regulated and controlled, and further the hardness change of the high-entropy alloy is influenced.
Drawings
FIG. 1 shows examples 1 to 3 for enhancing Al by electric pulse treatment0.1Schematic diagram of an experimental device for hardness of CoCrFeNi high-entropy alloy.
FIG. 2 shows as-cast Al of comparative example 10.1CoCrFeNi high-entropy alloy and Al treated with electric pulse in examples 1 to 30.1X-ray diffraction pattern spectrogram of the CoCrFeNi high-entropy alloy.
FIG. 3 shows as-cast Al of comparative example 10.1CoCrFeNi high-entropy alloy and Al treated with electric pulse in examples 1 to 30.1Vickers hardness of the CoCrFeNi high entropy alloy.
Wherein, 1-regulating switch, 2-DC pulse power supply, 3-cathode clamp, 4-pressure head, 5-Al0.1CoCrFeNi high-entropy alloy sample, 6-anode clamp.
Detailed Description
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto. The following comparative examples and examples:
the X-ray diffraction pattern test has the scanning angle range of 10-100 degrees and the scanning speed of 5 degrees/min, and the test result is processed by crystal structure analysis software MDI Jade 6.5.
The alloy hardness test is carried out by adopting a full-automatic digital display micro Vickers hardness tester of Deka HV-1000Z, and is carried out under a static load of 100g for 10 s. The method for selecting the Vickers hardness test points comprises the steps of starting from the center point of an alloy sample, then selecting the alloy sample at equal intervals along the straight line directions of the upper part, the lower part, the left part and the right part, selecting 10 Vickers hardness test points for each alloy sample to be tested to perform Vickers hardness test, and finally averaging.
The documents [1 to 3] mentioned in comparative example 1 are:
document [1 ]]：X.Xu,P.Liu,Z.Tang,A.Hirata,S.Song,T.Nieh,P.Liaw,C.Liu,M.Chen,Transmission electron microscopy characterization of dislocation structure in a face-centered cubic high-entropy alloy Al0.1CoCrFeNi,Acta Materialia 144(2018)107-115.
Document [2 ]]：P.Yu,H.Cheng,L.Zhang,H.Zhang,Q.Jing,M.Ma,P.Liaw,G.Li,R.Liu,Effects of high pressure torsion on microstructures and properties of an Al0.1CoCrFeNi high-entropy alloy,Materials Science and Engineering:A 655(2016)283-291.
Document [3]：T.Yang,Z.Tang,X.Xie,R.Carroll,G.Wang,Y.Wang,K.A.Dahmen,P.K.Liaw,Y.Zhang,Deformation mechanisms of Al0.1CoCrFeNi at elevated temperatures,Materials Science and Engineering:A 684(2017)552-558.
FIG. 1 shows examples 1 to 3 for enhancing Al by electric pulse treatment0.1Schematic diagram of an experimental device for the hardness of the CoCrFeNi high-entropy alloy; when in use, the cathode clamp 3 and the anode clamp 6 at the output end of the direct current pulse power supply 2 are respectively connected to the pressure heads 4 at two ends of the compression mould matched with the universal tester, and Al is added0.1The CoCrFeNi high-entropy alloy sample 5 is stably placed between the pressure heads 4 at the two ends of the compression die, and the pressure heads 4 at the two ends of the compression die are adjusted through a universal testing machine to be matched with Al0.1The upper and lower surfaces of the CoCrFeNi high-entropy alloy sample 5 are in contact without applying an acting force, and the magnitude of the current is adjusted by adjusting the switch 1.
Comparative example 1
Al prepared by vacuum suspension smelting0.1Taking a cylindrical alloy sample with the size of 3.5mm and the height of 7mm from the CoCrFeNi high-entropy alloy ingot in a wire cutting mode for preparing Al0.1The raw materials Al, Co, Cr, Fe and Ni of the CoCrFeNi high-entropy alloy ingot are all metals with the purity of more than or equal to 99.9%; the upper surface and the lower surface of the alloy sample are sequentially ground by using 800-mesh, 1000-mesh, 1200-mesh and 1500-mesh metallographic abrasive paper, and then the alloy sample is mechanically polished to ensure that the upper surface and the lower surface of the alloy sample have no scratch and good parallelism and are cast Al without electric pulse treatment0.1CoCrFeNi high entropy alloy.
As-cast Al of this comparative example which had not been subjected to electric pulse treatment0.1The CoCrFeNi high-entropy alloy was tested as follows:
(1) as-cast Al of this comparative example which had not been subjected to electric pulse treatment was subjected to X-ray diffractometry0.1The CoCrFeNi high-entropy alloy is subjected to X-ray diffraction pattern test to characterize the crystal structure, and the result is shown as (a) in FIG. 2, namely the cast Al0.1X-ray diffraction pattern of CoCrFeNi high-entropy alloy, X-ray diffraction peak and PDF standard card thereof and literature[1-3]Reported Al0.1The X-ray diffraction peaks of the CoCrFeNi high-entropy alloy are matched, so that the following can be known: as-cast Al not treated with Electrical pulse in this comparative example0.1The CoCrFeNi high-entropy alloy is an FCC single-phase solid solution.
(2) The hardness test of the alloy showed that the cast Al of this comparative example was not treated with electric pulse as shown in FIG. 30.1The Vickers hardness of the CoCrFeNi high-entropy alloy is 171.4 Hv.
Example 1
The same alloy sample as in comparative example 1 was used, and electric pulse treatment was applied thereto; the electrical pulse treatment parameters were as follows: the electric pulse output in the electric pulse treatment process is in the form of pulse square waves, the times of the electric pulse treatment are 10 times, the time of single electric pulse treatment is 0.5s, the time interval of two adjacent electric pulse treatments is 30s, and the current density of each electric pulse treatment is 10A/mm2After the electric pulse treatment, Al0.1Naturally cooling the CoCrFeNi high-entropy alloy sample to obtain Al after electric pulse treatment0.1CoCrFeNi high entropy alloy.
The electric pulse-treated Al obtained in the example0.1The CoCrFeNi high-entropy alloy was tested as follows:
(1) the electric pulse-treated Al obtained in this example was subjected to X-ray diffractometry0.1The CoCrFeNi high-entropy alloy is subjected to an X-ray diffraction pattern test to characterize the crystal structure thereof, and the result is shown in (b) of fig. 2, from which it can be known that: passing current density is 10A/mm2After electric pulse treatment, Al0.1The crystal structure of the CoCrFeNi high-entropy alloy is not obviously changed and still belongs to an FCC single-phase solid solution structure; however, as is clear from comparison with FIG. 2 (a), this example passed 10A/mm2After electric pulse treatment, Al0.1The diffraction peak relative intensity of the CoCrFeNi high-entropy alloy in the (111) and (200) crystal face directions is obviously enhanced, namely the embodiment passes through 10A/mm2Electric pulse treated Al0.1The CoCrFeNi high-entropy alloy has obvious preferred orientation in the (111) crystal plane and the (200) crystal plane.
(2) The hardness test results of the alloy are shown in FIG. 3, from which it can be seen that the passing current density of this example is 10A/mm2Electric pulse treated Al0.1The Vickers hardness of the CoCrFeNi high-entropy alloy is 194.7Hv, and the alloy is compared with the cast Al which is not treated by electric pulse in the comparative example 10.1Compared with the hardness of the CoCrFeNi high-entropy alloy, the hardness of the CoCrFeNi high-entropy alloy is improved by about 13.5 percent, and the CoCrFeNi high-entropy alloy has an obvious improvement effect.
Example 2
The same alloy sample as in comparative example 1 was used, and electric pulse treatment was applied thereto; the electrical pulse treatment parameters were as follows: the electric pulse output in the electric pulse treatment process is in the form of pulse square waves, the times of the electric pulse treatment are 10 times, the time of single electric pulse treatment is 0.5s, the time interval of two adjacent electric pulse treatments is 30s, and the current density of each electric pulse treatment is 90A/mm2After the electric pulse treatment, Al0.1Naturally cooling the CoCrFeNi high-entropy alloy sample to obtain Al after electric pulse treatment0.1CoCrFeNi high entropy alloy.
The electric pulse-treated Al obtained in the example0.1The CoCrFeNi high-entropy alloy was tested as follows:
(1) the electric pulse-treated Al obtained in this example was subjected to X-ray diffractometry0.1The CoCrFeNi high-entropy alloy is subjected to an X-ray diffraction pattern test to characterize the crystal structure thereof, and the result is shown in (c) of fig. 2, from which it can be known that: the passing current density is 90A/mm2After electric pulse treatment, Al0.1The CoCrFeNi high-entropy alloy still belongs to an FCC single-phase solid solution structure; as can be seen from comparison of (a) and (b) in FIG. 2, the present example passed 90A/mm2After electric pulse treatment, Al is present as the electric pulse density increases0.1The diffraction peak relative intensity of the CoCrFeNi high-entropy alloy in the (111), (200) and (220) crystal face directions is enhanced, namely, the current density is 10A/mm2To 90A/mm2In the range of (A), Al0.1The preferred orientation of the CoCrFeNi high-entropy alloy in the (111), (200) and (220) crystal plane directions becomes more obvious with the increase of the pulse current density.
(2) The hardness test results of the alloy are shown in FIG. 3, from which it can be seen that the current density of 90A/mm passes in the present example2Electric pulse treated Al0.1The Vickers hardness of the CoCrFeNi high-entropy alloy is 251.0Hv, and the alloy is compared with the cast state which is not treated by electric pulse in comparative example 1Al0.1Compared with CoCrFeNi high-entropy alloy, Al obtained in the embodiment0.1The hardness of the CoCrFeNi high-entropy alloy is improved by about 46.4 percent, and the hardness of the CoCrFeNi high-entropy alloy is equal to that of Al obtained in example 10.1The hardness of the CoCrFeNi high-entropy alloy is improved by about 28.9 percent.
Example 3
The same alloy sample as in comparative example 1 was used, and electric pulse treatment was applied thereto; the electrical pulse treatment parameters were as follows: the electric pulse output in the electric pulse treatment process is in the form of pulse square waves, the times of the electric pulse treatment are 10 times, the time of single electric pulse treatment is 0.5s, the time interval of two adjacent electric pulse treatments is 30s, and the current density of each electric pulse treatment is 100A/mm2After the electric pulse treatment, Al0.1Naturally cooling the CoCrFeNi high-entropy alloy sample to obtain Al after electric pulse treatment0.1CoCrFeNi high entropy alloy.
The electric pulse-treated Al obtained in the example0.1The CoCrFeNi high-entropy alloy was tested as follows:
(1) the electric pulse-treated Al obtained in this example was subjected to X-ray diffractometry0.1The CoCrFeNi high-entropy alloy is subjected to an X-ray diffraction pattern test to characterize the crystal structure thereof, and the result is shown in (d) in fig. 2, from which it can be known that: the passing current density is 100A/mm2After electric pulse treatment, Al0.1The CoCrFeNi high-entropy alloy still belongs to an FCC single-phase solid solution structure; as can be seen from comparison of (a), (b) and (c) in FIG. 2, this example passed 100A/mm2After the electric pulse treatment, Al is added with the continuous increase of the electric pulse density0.1The relative intensity of the diffraction peak of the CoCrFeNi high-entropy alloy in the (200) crystal face direction is continuously enhanced, and the diffraction peak in the Al crystal face direction is continuously enhanced0.1The relative intensity of diffraction peaks of the CoCrFeNi high-entropy alloy in the (111) and (220) crystal plane directions tends to decrease along with the increase of the pulse current density.
(2) The hardness of the alloy is measured and the results are shown in FIG. 3, from which it can be seen that the current density of the alloy passes 100A/mm2Electric pulse treated Al0.1The Vickers hardness of the CoCrFeNi high-entropy alloy is 212.8Hv, and the alloy is compared with the cast Al which is not treated by electric pulse and is in the cast state of comparative example 10.1Compared with CoCrFeNi high-entropy alloy, the alloy obtained by the embodimentAl of (2)0.1The hardness of the CoCrFeNi high-entropy alloy is improved by about 24.2 percent, and the hardness of the CoCrFeNi high-entropy alloy is equal to that of Al obtained in example 10.1The hardness of the CoCrFeNi high-entropy alloy is improved by about 9.3 percent compared with that of the Al obtained in example 20.1The hardness of the CoCrFeNi high-entropy alloy is reduced by 38.2Hv compared with that of the CoCrFeNi high-entropy alloy.
In conclusion, the invention adopts electric pulse to treat Al0.1The CoCrFeNi high-entropy alloy is convenient to operate, short in time consumption and environment-friendly; in addition, as-cast Al0.1After the CoCrFeNi high-entropy alloy is subjected to electric pulse treatment, the current density is 10A/mm2To 100A/mm2In the range of (1), Al0.1The hardness of the CoCrFeNi high-entropy alloy is improved to 10A/mm2To 90A/mm2In the range of (1), treated Al with increasing pulse current density0.1The hardness of the CoCrFeNi high-entropy alloy is increased; and the current density is 90A/mm2While treating the obtained Al0.1The hardness of the CoCrFeNi high-entropy alloy is even better than that of the alloy with the current density of 100A/mm2Treated Al0.1Hardness of CoCrFeNi high entropy alloy.
The present invention includes, but is not limited to, the above embodiments, and any equivalent substitutions or partial modifications made under the principle of the present invention should be considered within the scope of the present invention.
Claims (7)
1. A method for enhancing the hardness of a high-entropy alloy by electric pulse treatment is characterized by comprising the following steps: the method comprises the following steps:
mixing Al0.1The CoCrFeNi high-entropy alloy is subjected to electric pulse treatment, the frequency of the electric pulse treatment is 5-20 times, the time of single electric pulse treatment is 0.1-1 s, the time interval of two adjacent electric pulse treatments is 10-60 s, and the current density of the electric pulse treatment is 10A/mm2～100A/mm2And the current density of each electric pulse treatment is the same, and after the electric pulse treatment is finished, the treated Al is added0.1The CoCrFeNi high-entropy alloy is naturally cooled to obtain Al after electric pulse treatment0.1A CoCrFeNi high entropy alloy;
the Al is0.1Raw materials Al, Co, Cr, Fe and for CoCrFeNi high-entropy alloyThe Ni is metal with the purity of more than or equal to 99.9 percent.
2. The method for enhancing the hardness of the high-entropy alloy by electric pulse treatment according to claim 1, wherein the electric pulse treatment comprises the following steps: the electric pulse output in the electric pulse treatment process is in the form of pulse square waves.
3. The method for enhancing the hardness of the high-entropy alloy by electric pulse treatment according to claim 1, wherein the electric pulse treatment comprises the following steps: the number of electric pulse treatments was 10.
4. The method for enhancing the hardness of the high-entropy alloy by electric pulse treatment according to claim 1, wherein the electric pulse treatment comprises the following steps: the time for single electrical pulse treatment was 0.5 s.
5. The method for enhancing the hardness of the high-entropy alloy by electric pulse treatment according to claim 1, wherein the electric pulse treatment comprises the following steps: the time interval between two adjacent electric pulse treatments was 30 s.
6. A method for enhancing the hardness of a high-entropy alloy by electric pulse treatment according to claim 1, wherein: the current density of the electric pulse treatment was 90A/mm2。
7. The method for enhancing the hardness of the high-entropy alloy by electric pulse treatment according to claim 1, wherein the electric pulse treatment comprises the following steps: the electric pulse output in the electric pulse treatment process is in the form of pulse square waves;
the number of electric pulse treatments was 10;
the time of single electric pulse treatment is 0.5 s;
the time interval between two adjacent electric pulse treatments is 30 s;
the current density of the electric pulse treatment was 90A/mm2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110512953.6A CN113235033B (en) | 2021-05-11 | 2021-05-11 | Method for enhancing hardness of high-entropy alloy through electric pulse treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110512953.6A CN113235033B (en) | 2021-05-11 | 2021-05-11 | Method for enhancing hardness of high-entropy alloy through electric pulse treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113235033A CN113235033A (en) | 2021-08-10 |
| CN113235033B true CN113235033B (en) | 2022-05-03 |
Family
ID=77133487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110512953.6A Active CN113235033B (en) | 2021-05-11 | 2021-05-11 | Method for enhancing hardness of high-entropy alloy through electric pulse treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113235033B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107267843A (en) * | 2017-06-28 | 2017-10-20 | 吉林化工学院 | A kind of high strength and high hardness AlCoCrFeNi high-entropy alloys and preparation method thereof |
| CN107653425B (en) * | 2017-09-12 | 2019-03-29 | 西北工业大学 | The method for improving Al0.5CoCrFeNi high-entropy alloy mechanical property using magnetic field |
| CN110129522A (en) * | 2019-05-20 | 2019-08-16 | 北京理工大学 | High-entropy alloy magnetic field impulse heat treatment technics |
-
2021
- 2021-05-11 CN CN202110512953.6A patent/CN113235033B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113235033A (en) | 2021-08-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108179343A (en) | A kind of preparation method of Ultra-fine Grained high-entropy alloy | |
| CN110241367A (en) | A kind of aluminium alloy method for toughening based on pulse current | |
| CN112831711B (en) | High-performance low-density two-phase high-entropy alloy and preparation method thereof | |
| CN104451491A (en) | Preparation method of Ti12LC titanium alloy forge piece | |
| CN101148713B (en) | Method for preparing high-strength high-conductivity copper-chromium-zirconium alloy material and device thereof | |
| CN102049515B (en) | Iron-silicon-aluminum soft magnetic powder and manufacturing method thereof | |
| CN106011681A (en) | Method capable of improving mechanical property of 316 LN austenitic stainless steel | |
| CN112195420A (en) | Method for preparing wear-resistant Ti-based amorphous alloy block through cold treatment | |
| CN115198162A (en) | Entropy alloy in high-toughness heterogeneous multi-phase core-shell organization structure and preparation method thereof | |
| CN114411072B (en) | Aluminum alloy material with gradient structure and preparation method thereof | |
| CN113235033B (en) | Method for enhancing hardness of high-entropy alloy through electric pulse treatment | |
| CN108977689A (en) | A kind of metastable β Titanium-alloy plate and its processing method | |
| CN111850372A (en) | A series of FeCoCrNiW (VC)XPreparation of high-entropy alloy and precipitation strengthening process thereof | |
| CN110923750A (en) | Preparation method of high-entropy alloy | |
| CN109136804A (en) | The preparation method of the plate of high tough ultra-fine two-phase lamellar structure QAl10-4-4 aluminium bronze | |
| CN117660738A (en) | Plastic deformation lifting method for dual-phase TRIP steel | |
| CN115612955B (en) | Recrystallized high-strength and high-toughness superfine crystal pure titanium and preparation method thereof | |
| CN108246828B (en) | Method for preparing high-silicon steel wire by electro-plastic drawing method | |
| CN114381677B (en) | Toughening control method for rare earth magnesium alloy | |
| CN113493886B (en) | Forming method for improving structure uniformity of titanium alloy bar by combining free forging and pulse current auxiliary extrusion | |
| CN108359834A (en) | A kind of preparation method of electrospark electrode nanostructure copper alloy | |
| CN116463569B (en) | Method for regulating orientation of titanium-aluminum alloy sheet layer through strong magnetic field heat treatment | |
| CN109402501A (en) | A kind of high-fatigue strength nonmagnetic steel and preparation method thereof | |
| CN110195148B (en) | High magnetic induction oriented silicon steel heat treatment process | |
| Tan et al. | Influences of Solution Temperatures on Microstructure and Mechanical Properties of near α Titanium Alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |