CN111283212B - Tungsten alloy material with stripping self-sharpening structure and preparation method and application thereof - Google Patents
Tungsten alloy material with stripping self-sharpening structure and preparation method and application thereof Download PDFInfo
- Publication number
- CN111283212B CN111283212B CN202010227146.5A CN202010227146A CN111283212B CN 111283212 B CN111283212 B CN 111283212B CN 202010227146 A CN202010227146 A CN 202010227146A CN 111283212 B CN111283212 B CN 111283212B
- Authority
- CN
- China
- Prior art keywords
- tungsten
- nickel
- treatment
- iron
- oxide powder
- 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
- 229910001080 W alloy Inorganic materials 0.000 title claims abstract description 45
- 239000000956 alloy Substances 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 77
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 38
- OWUGOENUEKACGV-UHFFFAOYSA-N [Fe].[Ni].[W] Chemical compound [Fe].[Ni].[W] OWUGOENUEKACGV-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 claims abstract description 26
- 229910000480 nickel oxide Inorganic materials 0.000 claims abstract description 19
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 claims abstract description 19
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910001930 tungsten oxide Inorganic materials 0.000 claims abstract description 19
- 239000011812 mixed powder Substances 0.000 claims abstract description 18
- 238000013000 roll bending Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 238000000280 densification Methods 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 17
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 14
- 238000005245 sintering Methods 0.000 claims description 8
- 229910052786 argon Inorganic materials 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 239000002826 coolant Substances 0.000 claims description 4
- 238000011068 loading method Methods 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000006722 reduction reaction Methods 0.000 abstract description 23
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000010008 shearing Methods 0.000 abstract description 6
- 238000009413 insulation Methods 0.000 abstract description 5
- 239000003638 chemical reducing agent Substances 0.000 abstract description 3
- 229910001145 Ferrotungsten Inorganic materials 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 229910003271 Ni-Fe Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
- B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/18—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by using pressure rollers
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/04—Alloys based on tungsten or molybdenum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
- B22F2003/145—Both compacting and sintering simultaneously by warm compacting, below debindering temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention provides a tungsten alloy material with a stripping self-sharpening structure and a preparation method and application thereof, belonging to the technical field of tungsten alloy preparation. Mixing tungsten oxide powder, nickel oxide powder and iron oxide powder to obtain mixed powder, and performing pulse reduction plasma jet treatment and cooling treatment on the mixed powder to obtain tungsten-nickel-iron prealloyed powder; carrying out four-stage double-roll forming treatment on the tungsten-nickel-iron prealloy powder to obtain a plate type tungsten-nickel-iron alloy; performing roll bending deformation treatment on the plate type tungsten-nickel-iron alloy to obtain a deformed tungsten-nickel-iron alloy; and carrying out warm-pressing densification treatment on the deformed tungsten-nickel-iron alloy to obtain the tungsten alloy material with the delaminating self-sharpening structure. The invention fully exerts the technical advantages of chemical reduction and plastic deformation by adopting the pulse reduction plasma jet technology, the four-stage pair roller forming treatment, the roll bending deformation treatment and the warm pressing densification treatment, can optimize the matching property of the strength and the plasticity of the tungsten alloy material, and ensures that the obtained tungsten alloy material with the delaminating self-sharpening structure has better heat insulation shearing performance.
Description
Technical Field
The invention relates to the technical field of tungsten alloy preparation, in particular to a tungsten alloy material with a stripping self-sharpening structure and a preparation method and application thereof.
Background
The high-density tungsten alloy is used as a structural material and is mainly used in the military field of armor piercing bullet cores and the like, and the matching property (heat insulation shearing property) of the strength and the plasticity of the high-density tungsten alloy is a key condition for determining the armor piercing performance of bullets. If the strength is too high and the plasticity is too low, the armor piercing process is easy to break, otherwise, if the strength is too low and the plasticity is too high, a mushroom-shaped bullet is easy to appear, and the bullet loses the self-sharpening property and the armor piercing performance. The existing methods of pressureless liquid phase sintering, hot pressing sintering, two-step sintering, simple plastic deformation and the like have limited regulation and control level on the adiabatic shearing performance of the tungsten alloy material. Therefore, an effective method is found, the matching of the strength and the plasticity of the tungsten alloy material is optimized, and the method is very important for improving the armor piercing performance such as the heat insulation shearing performance of the tungsten alloy material.
Disclosure of Invention
The method provided by the invention fully exerts the technical advantages of chemical reduction and plastic deformation, can optimize the matching of the strength and the plasticity of the tungsten alloy material, and enables the obtained tungsten alloy material with the stripping self-sharpening structure to have better heat insulation and shearing performance.
In order to achieve the above object, the present invention provides the following technical solutions:
a preparation method of a tungsten alloy material with a stripping self-sharpening structure comprises the following steps:
mixing tungsten oxide powder, nickel oxide powder and iron oxide powder to obtain mixed powder, and performing pulse reduction plasma jet treatment and cooling treatment on the mixed powder to obtain wolfram-nickel-iron prealloy powder;
carrying out four-stage double-roll forming treatment on the tungsten-nickel-iron prealloy powder to obtain a plate type tungsten-nickel-iron alloy;
performing roll bending deformation treatment on the plate type tungsten-nickel-iron alloy to obtain a deformed tungsten-nickel-iron alloy;
and carrying out warm-pressing densification treatment on the deformed tungsten-nickel-iron alloy to obtain the tungsten alloy material with the delaminating self-sharpening structure.
Preferably, the amount of the tungsten oxide powder is 91.67-96.89% by mass, the amount of the nickel oxide powder is 2.11-5.33% by mass, and the amount of the iron oxide powder is 1-3% by mass.
Preferably, the plasma source for the pulse reduction plasma jet treatment is a mixed gas of argon and hydrogen, the pulse current is 2.3-4.1A, and the pulse frequency is 6.8-11.5 Hz; the treatment efficiency of the pulse reduction plasma jet treatment was 7s/g based on the mass of the mixed powder.
Preferably, the cooling medium adopted in the cooling treatment is circulating water at 3 ℃.
Preferably, the operating conditions of the four-stage roll-to-roll forming process include: the diameter grading of the four-stage pair roller is 4:2.5:2.3:2, the blank discharging speed is 0.3-1.6 cm/s, the temperature rising gradient is 3-6 ℃/cm according to the running direction of the blank, and the highest sintering temperature is 1410-1600 ℃.
Preferably, the transverse deformation speed of the roll bending deformation treatment is 3-6 mm/min, and the longitudinal deformation speed is 0.05-0.14 mm/min.
Preferably, the pressure of the warm-pressing densification treatment is 3.6-5.8 GPa, the loading rate of the pressure is 120-240 MPa/min, the temperature is 560-740 ℃, and the heat preservation and pressure maintaining time is 2-5 min.
The invention provides the tungsten alloy material with the stripping self-sharpening structure prepared by the preparation method in the technical scheme.
Preferably, the Mohs hardness of the tungsten alloy material with the stripping self-sharpening structure is more than or equal to 7.4, the yield strength is more than or equal to 2150MPa, the adiabatic shear strain rate is less than or equal to 5.6%, and the average grain size of crystal grains is less than or equal to 1.5 μm.
The invention provides application of the tungsten alloy material with the stripping self-sharpening structure in the technical scheme in the military field.
The invention provides a preparation method of a tungsten alloy material with a stripping self-sharpening structure, which comprises the following steps: mixing tungsten oxide powder, nickel oxide powder and iron oxide powder to obtain mixed powder, and performing pulse reduction plasma jet treatment and cooling treatment on the mixed powder to obtain wolfram-nickel-iron prealloy powder; carrying out four-stage double-roll forming treatment on the tungsten-nickel-iron prealloy powder to obtain a plate type tungsten-nickel-iron alloy; performing roll bending deformation treatment on the plate type tungsten-nickel-iron alloy to obtain a deformed tungsten-nickel-iron alloy; and carrying out warm-pressing densification treatment on the deformed tungsten nickel-iron alloy to obtain the tungsten alloy material with a delaminating self-sharpening structure. Aiming at the problem that the contradiction between the strength and the plasticity of the tungsten alloy is difficult to effectively coordinate by common means in the prior art, the invention fully exerts the technical advantages of chemical reduction and plastic deformation by adopting a pulse reduction plasma jet technology, four-stage pair roller forming treatment, roll bending deformation treatment and warm pressing densification treatment, and can optimize the matching property of the strength and the plasticity of the tungsten alloy material, so that the obtained tungsten alloy material with the delaminating self-sharpening structure has better heat insulation shearing performance. Specifically, the pulse reduction plasma jet technology is adopted, which is beneficial to realizing the rapid and high-purity reduction of tungsten oxide powder, nickel oxide powder and iron oxide powder, inhibiting the powder from growing and homogenizing the distribution of tungsten, nickel and iron atoms; the four-stage pair roller forming treatment and the roll bending deformation treatment are respectively fast and slow plastic deformation technologies, and the combination of the fast and slow plastic deformation technologies can regulate the grain boundary area and the grain orientation relation, so that a foundation is provided for obtaining a stripping self-sharpening structure; the warm-pressing densification treatment is used for removing the internal stress of the plastic deformation tissue and avoiding the stress concentration effect. In addition, the method provided by the invention has the advantages of high component control precision, good process stability and strong repeatability, can realize the performance optimization of the tungsten alloy material, and expands the application range of the tungsten alloy material. The results of the examples show that the tungsten alloy material prepared by the method provided by the invention has a delaminating self-sharpening structure, the Mohs hardness is more than or equal to 7.4, the yield strength is more than or equal to 2150MPa, the adiabatic shear strain rate is less than or equal to 5.6%, and the average grain size of crystal grains is less than or equal to 1.5 μm.
Detailed Description
The invention provides a preparation method of a tungsten alloy material with a stripping self-sharpening structure, which comprises the following steps:
mixing tungsten oxide powder, nickel oxide powder and iron oxide powder to obtain mixed powder, and performing pulse reduction plasma jet treatment and cooling treatment on the mixed powder to obtain wolfram-nickel-iron prealloy powder;
carrying out four-stage double-roll forming treatment on the tungsten-nickel-iron prealloy powder to obtain a plate type tungsten-nickel-iron alloy;
performing roll bending deformation treatment on the plate type tungsten-nickel-iron alloy to obtain a deformed tungsten-nickel-iron alloy;
and carrying out warm-pressing densification treatment on the deformed tungsten-nickel-iron alloy to obtain the tungsten alloy material with the delaminating self-sharpening structure.
In the present invention, unless otherwise specified, all the raw materials and equipment used are commercially available products well known to those skilled in the art.
The method comprises the steps of mixing tungsten oxide powder, nickel oxide powder and iron oxide powder to obtain mixed powder, and carrying out pulse reduction plasma jet treatment and cooling treatment on the mixed powder to obtain tungsten-nickel-iron prealloyed powder. In the invention, the tungsten oxide powder is preferably used in an amount of 91.67 to 96.89% by mass, the nickel oxide powder is preferably used in an amount of 2.11 to 5.33% by mass, and the iron oxide powder is preferably used in an amount of 1 to 3% by mass. In the present invention, the particle sizes of the tungsten oxide powder, the nickel oxide powder and the iron oxide powder are preferably independently 2 to 6 μm; the sources of the tungsten oxide powder, nickel oxide powder and iron oxide powder are not particularly limited in the present invention, and commercially available products known to those skilled in the art may be used. The mixing mode of the tungsten oxide powder, the nickel oxide powder and the iron oxide powder is not specially limited, and the tungsten oxide powder, the nickel oxide powder and the iron oxide powder can be uniformly mixed.
After mixing tungsten oxide powder, nickel oxide powder and iron oxide powder, the invention carries out pulse reduction plasma jet treatment and cooling treatment on the obtained mixed powder to obtain wolfram-nickel-iron prealloy powder. In the present invention, the plasma source of the pulse reduction plasma jet treatment is preferably a mixed gas of argon gas and hydrogen gas; the volume ratio of argon to hydrogen is preferably 6: 4; the pulse current is preferably 2.3-4.1A, more preferably 2.4-3.5A, and further preferably 2.5-3.1A; the pulse frequency is preferably 6.8-11.5 Hz, more preferably 6.9-10.5 Hz, and further preferably 7.0-7.5 Hz; the treatment efficiency of the pulse reduction plasma jet treatment is preferably 7s/g based on the mass of the mixed powder. In the present invention, the cooling medium used in the cooling treatment is preferably circulating water at 3 ℃. The invention adopts the pulse reduction plasma jet technology to realize the reduction of the tungsten oxide powder, the nickel oxide powder and the iron oxide powder, the pulse reduction plasma jet technology takes high pulse current as an energy excitation medium and takes the mixed gas of argon and hydrogen as a high-energy plasma source, and the tungsten oxide powder, the nickel oxide powder and the iron oxide powder can be rapidly reduced with high purity by the high-energy reduction and rapid cooling method, thereby inhibiting the powder from growing and homogenizing the distribution of tungsten, nickel and iron atoms.
After obtaining the ferrotungsten prealloying powder, the ferrotungsten prealloying powder is subjected to four-stage double-roll forming treatment to obtain the plate type ferrotungsten alloy. In the present invention, the operating conditions of the four-stage pair-roll forming process include: the diameter grading of the four-stage pair roller is preferably 4:2.5:2.3: 2; the ejection speed is preferably 0.3-1.6 cm/s, and more preferably 0.4-0.6 cm/s; the temperature rise gradient is preferably 3-6 ℃/cm and more preferably 4-5 ℃/cm according to the running direction of the blank; the maximum sintering temperature is preferably 1410-1600 ℃, more preferably 1450-1600 ℃, and further preferably 1490-1500 ℃. In the present invention, the material of the counter roller used in the four-stage counter roller forming process is preferably cemented carbide. The invention carries out four-stage double-roller forming treatment on the ferrotungsten prealloying powder, and gradually heats the ferrotungsten prealloying powder in an induction heating mode to achieve the purpose of pressure sintering. In the present invention, the four-stage roll-to-roll forming treatment is preferably performed in a four-stage roll-to-roll forming integrated apparatus.
After the plate-type W-Ni-Fe alloy is obtained, the invention carries out roll bending deformation treatment on the plate-type W-Ni-Fe alloy to obtain the deformed W-Ni-Fe alloy. In the invention, the transverse deformation speed of the roll bending deformation treatment is preferably 3-6 mm/min, and more preferably 4-5 mm/min; the longitudinal deformation speed is preferably 0.05-0.14 mm/min, and more preferably 0.07-0.08 mm/min.
After the deformed tungsten-nickel-iron alloy is obtained, the deformed tungsten-nickel-iron alloy is subjected to warm compaction treatment to obtain the tungsten alloy material with the delaminating self-sharpening structure. In the invention, the pressure of the warm-pressing densification treatment is preferably 3.6-5.8 GPa, and more preferably 3.8-4.8 GPa; the loading rate of the pressure is preferably 120-240 MPa/min, and more preferably 140-210 MPa/min; the temperature is preferably 560-740 ℃; the heat preservation and pressure maintaining time is preferably 2-5 min, and more preferably 3-4 min.
The invention provides the tungsten alloy material with the stripping self-sharpening structure prepared by the preparation method in the technical scheme. In the invention, the Mohs hardness of the tungsten alloy material with the stripping self-sharpening structure is more than or equal to 7.4, the yield strength is more than or equal to 2150MPa, the adiabatic shear strain rate is less than or equal to 5.6%, and the average grain size of crystal grains is less than or equal to 1.5 μm.
The invention provides application of the tungsten alloy material with the delaminating self-sharpening structure in the technical scheme in the military industry field, and the tungsten alloy material can be specifically used for preparing armor piercing bullet cores.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
(1) According to the mass percentage, 92.70% of tungsten oxide powder (the granularity is 2-6 mu m), 5.33% of nickel oxide powder (the granularity is 2-6 mu m) and 1.97% of iron oxide powder (the granularity is 2-6 mu m) are uniformly mixed, and the obtained mixed powder is subjected to pulse reduction plasma jet treatment and cooling treatment to obtain tungsten-nickel-iron pre-alloy powder; wherein the operating conditions include: the plasma source is a mixed gas of argon and hydrogen, and the volume ratio of the argon to the hydrogen is 6: 4; the pulse current is 2.3A, and the pulse frequency is 6.8 Hz; the treatment efficiency of the pulse reduction plasma jet treatment is 7s/g based on the mass of the mixed powder; the cooling medium is circulating water at 3 ℃;
(2) sending the tungsten-nickel-iron prealloying powder into a four-stage double-roller forming integrated device for forming to obtain a plate type tungsten-nickel-iron alloy; wherein the operating conditions include: the diameter grading of the four-stage pair roller is 4:2.5:2.3:2, the blank discharging speed is 0.3cm/s, the temperature rising gradient is 3 ℃/cm according to the running direction of the blank, and the highest sintering temperature is 1410 ℃;
(3) performing roll bending deformation treatment on the plate type tungsten-nickel-iron alloy to obtain a deformed tungsten-nickel-iron alloy; wherein the operating conditions include: the transverse deformation speed is 3mm/min, and the longitudinal deformation speed is 0.05 mm/min;
(4) carrying out warm-pressing densification treatment on the deformed tungsten-nickel-iron alloy in a bidirectional overweight press device to obtain a tungsten alloy material with a layer-stripping self-sharpening structure; wherein the operating conditions include: the pressure is 3.6GPa, the loading rate of the pressure is 120MPa/min, the temperature is 560 ℃, and the heat preservation and pressure maintaining time is 2 min.
Examples 2 to 8
The tungsten alloy material with a delaminated self-sharpening structure was prepared according to the method of example 1, and the raw material ratios and the operating parameters of the respective steps are shown in table 1 (the operating conditions or parameters not listed in table 1 are the same as those of example 1).
TABLE 1 feed proportioning and operating parameters for each step in examples 1-8
The mohs hardness, yield strength (GB T228.1-2010), adiabatic shear strain rate, and grain size of the tungsten alloy materials of the delaminated self-sharpening structure prepared in examples 1 to 8 were measured, and the results are shown in table 2; the measurement method of the adiabatic shear strain rate comprises the following steps: the tungsten alloy material with the stripping self-sharpening structure prepared in each embodiment is processed into a circular truncated cone sample with the diameter of the lower bottom being 4mm, the diameter of the upper bottom being 1mm and the height being 5mm by linear cutting, the upper bottom is placed on a 515BHN high-hardness steel plate downwards, a forging hammer is used for hammering the lower bottom of the circular truncated cone sample by an instant impact force of 0.5-1.5 GPa, and the strain rate required for generating initial stripping cracks is measured.
Table 2 detection results of performance and quality index of the tungsten alloy material having the delamination self-sharpening structure prepared in examples 1 to 8
| Sample (I) | Mohs hardness | Yield strength (MPa) | Adiabatic shear strain rate (%) | Average grain size (. mu.m) |
| Example 1 | 7.8 | 2210 | 5.4 | 1.5 |
| Example 2 | 7.4 | 2180 | 5.6 | 1.2 |
| Example 3 | 7.5 | 2150 | 4.8 | 1.1 |
| Example 4 | 7.6 | 2160 | 4.7 | 1.3 |
| Example 5 | 7.9 | 2240 | 5.5 | 1.4 |
| Example 6 | 7.7 | 2280 | 5.1 | 1.0 |
| Example 7 | 8.0 | 2190 | 4.5 | 0.9 |
| Example 8 | 8.1 | 2170 | 5.0 | 1.2 |
The tungsten alloy material prepared by the invention has a delaminating self-sharpening structure, and as can be seen from Table 2, the Mohs hardness of the tungsten alloy material is more than or equal to 7.4, the yield strength is more than or equal to 2150MPa, the adiabatic shear strain rate is less than or equal to 5.6%, and the average grain size of crystal grains is less than or equal to 1.5 μm.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A preparation method of a tungsten alloy material with a stripping self-sharpening structure is characterized by comprising the following steps:
mixing tungsten oxide powder, nickel oxide powder and iron oxide powder to obtain mixed powder, and performing pulse reduction plasma jet treatment and cooling treatment on the mixed powder to obtain wolfram-nickel-iron prealloy powder; the particle sizes of the tungsten oxide powder, the nickel oxide powder and the iron oxide powder are independently 2-6 mu m; the plasma source for the pulse reduction plasma jet treatment is a mixed gas of argon and hydrogen, the pulse current is 2.3-4.1A, and the pulse frequency is 6.8-11.5 Hz; the treatment efficiency of the pulse reduction plasma jet treatment is 7s/g based on the mass of the mixed powder;
carrying out four-stage double-roll forming treatment on the tungsten-nickel-iron prealloy powder, and gradually heating in an induction heating mode to obtain a plate type tungsten-nickel-iron alloy; the operating conditions of the four-stage roll-to-roll forming process include: the four-stage roller pair diameter grading is 4:2.5:2.3:2, the blank discharging speed is 0.3-1.6 cm/s, the temperature rising gradient is 3-6 ℃/cm according to the running direction of the blank, and the highest sintering temperature is 1410-1600 ℃;
performing roll bending deformation treatment on the plate type tungsten-nickel-iron alloy to obtain a deformed tungsten-nickel-iron alloy;
and carrying out warm-pressing densification treatment on the deformed tungsten-nickel-iron alloy to obtain the tungsten alloy material with the delaminating self-sharpening structure.
2. The method according to claim 1, wherein the tungsten oxide powder is used in an amount of 91.67 to 96.89%, the nickel oxide powder is used in an amount of 2.11 to 5.33%, and the iron oxide powder is used in an amount of 1 to 3% by mass.
3. The method according to claim 1, wherein the cooling medium used in the cooling treatment is circulating water at 3 ℃.
4. The production method according to claim 1, wherein the roll bending deformation process has a transverse deformation speed of 3 to 6mm/min and a longitudinal deformation speed of 0.05 to 0.14 mm/min.
5. The preparation method according to claim 1, wherein the pressure of the warm-pressing densification treatment is 3.6-5.8 GPa, the loading rate of the pressure is 120-240 MPa/min, the temperature is 560-740 ℃, and the heat preservation and pressure maintaining time is 2-5 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010227146.5A CN111283212B (en) | 2020-03-27 | 2020-03-27 | Tungsten alloy material with stripping self-sharpening structure and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010227146.5A CN111283212B (en) | 2020-03-27 | 2020-03-27 | Tungsten alloy material with stripping self-sharpening structure and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111283212A CN111283212A (en) | 2020-06-16 |
| CN111283212B true CN111283212B (en) | 2022-05-17 |
Family
ID=71020889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010227146.5A Active CN111283212B (en) | 2020-03-27 | 2020-03-27 | Tungsten alloy material with stripping self-sharpening structure and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111283212B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113916062A (en) * | 2020-07-07 | 2022-01-11 | 东莞梵铃材料科技有限公司 | Armor piercing bullet and manufacturing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563443A (en) * | 2004-03-30 | 2005-01-12 | 上海大学 | Equipment for intensifying hydrogen reductiion for metallic oxide |
| CN104722770A (en) * | 2015-04-16 | 2015-06-24 | 柳州豪祥特科技有限公司 | Method for preparing tungsten-molybdenum powder |
| CN106694897A (en) * | 2016-12-27 | 2017-05-24 | 中国兵器科学研究院宁波分院 | Method for preparing tungsten-based high-density alloy nano-composite powder and block material made of nano-composite powder |
| CN110465666A (en) * | 2019-09-16 | 2019-11-19 | 陕西理工大学 | The preparation method of nano-interface and ultra micro crystal grain tungsten alloy material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006348349A (en) * | 2005-06-16 | 2006-12-28 | Katsuyoshi Kondo | Magnesium alloy-powder raw material, high proof-stress magnesium alloy, method for manufacturing magnesium alloy-powder raw material and method for manufacturing high proof-stress magnesium alloy |
-
2020
- 2020-03-27 CN CN202010227146.5A patent/CN111283212B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563443A (en) * | 2004-03-30 | 2005-01-12 | 上海大学 | Equipment for intensifying hydrogen reductiion for metallic oxide |
| CN104722770A (en) * | 2015-04-16 | 2015-06-24 | 柳州豪祥特科技有限公司 | Method for preparing tungsten-molybdenum powder |
| CN106694897A (en) * | 2016-12-27 | 2017-05-24 | 中国兵器科学研究院宁波分院 | Method for preparing tungsten-based high-density alloy nano-composite powder and block material made of nano-composite powder |
| CN110465666A (en) * | 2019-09-16 | 2019-11-19 | 陕西理工大学 | The preparation method of nano-interface and ultra micro crystal grain tungsten alloy material |
Non-Patent Citations (5)
| Title |
|---|
| 变形对钨合金微观组织性能及绝热剪切敏感性的影响;李淑华等;《特种铸造及有色合金》;20061015;第25卷(第11期);664-667 * |
| 郎利辉等.钨基合金的预强化和后期强化技术.《锻压技术》.2012,第37卷(第04期), * |
| 钨及其合金塑性加工的研究进展;李萍等;《稀有金属材料与工程》;20160215;第45卷(第02期);529-536 * |
| 钨基合金的预强化和后期强化技术;郎利辉等;《锻压技术》;20120825;第37卷(第04期);第1页-第4页 * |
| 钨基合金穿、破甲材料的研究进展;范景莲等;《中国钨业》;20070228;第22卷(第01期);25-29 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111283212A (en) | 2020-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105562694B (en) | A kind of three prosecutor method of hot isostatic pressing suitable for increasing material manufacturing components | |
| CN102230097A (en) | Preparation method of titanium alloy bars | |
| CN102502603A (en) | Production process of large isotropic and isostatic high purity graphite with fine particles | |
| CN105562448A (en) | Low-temperature preparation method for fine grain material of shaped charge liner | |
| CN110586824A (en) | Multidirectional isothermal forging method for refining titanium alloy grains by utilizing alpha' hexagonal martensite phase transformation | |
| CN111283212B (en) | Tungsten alloy material with stripping self-sharpening structure and preparation method and application thereof | |
| CN111088449A (en) | Double-crystal WC structure hard alloy and preparation method thereof | |
| CN104190944B (en) | A kind of preparation method of Sintered NdFeB magnet and device | |
| CN115198162A (en) | Entropy alloy in high-toughness heterogeneous multi-phase core-shell organization structure and preparation method thereof | |
| CN114959406A (en) | Oscillatory pressure sintering ultrahigh-temperature medium-entropy ceramic reinforced refractory fine-grain medium-entropy alloy composite material | |
| CN107244918B (en) | TiB-TiC-TiB2-B4Rapid preparation method of C-Al composite ceramic | |
| CN106834778B (en) | Hard alloy and preparation method | |
| CN103602870A (en) | Cemented carbide having nearly spherical WC grains and preparing method thereof | |
| CN103205663A (en) | Method for preparing difficultly-deformed metal block nanocrystalline material at low temperature | |
| CN109317679B (en) | Production method of aluminum alloy sheet | |
| CN113798495B (en) | High-entropy alloy sintering molding process with equivalent conversion of double elements | |
| CN103789563A (en) | Preparation method for TiB/Ti gradient composite material | |
| CN102828190A (en) | Improved heat processing method of corrugating roller | |
| CN105483626B (en) | A kind of production method of fine grain planar molybdenum target material | |
| CN112063892B (en) | High-thermal-stability equiaxial nanocrystalline Ti-Zr-Mn alloy and preparation method thereof | |
| CN112342433B (en) | High-thermal-stability equiaxial nanocrystalline Ti-Zr-W alloy and preparation method thereof | |
| CN112342431B (en) | High-thermal-stability equiaxial nanocrystalline Ti6Al4V-Cu alloy and preparation method thereof | |
| CN115106527A (en) | Multistage sintering method of high-strength titanium alloy part based on spark plasma sintering | |
| CN113088781A (en) | High-entropy hard alloy and preparation method and application thereof | |
| CN115652166B (en) | Superhard hard alloy material for ultrahigh-pressure water jet knife and preparation method thereof |
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 | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231114 Address after: 518000 zone B, first floor, building D, Chiwan Industrial Park, No. 1, Chiwan Shaodi Road, Shekou, Nanshan District, Shenzhen, Guangdong Province Patentee after: SHENZHEN QIANYAN EQUIPMENT Co.,Ltd. Address before: No. 99 Xinfeng Avenue, Jinfeng Town, High tech Zone, Jiulongpo District, Chongqing, 400050 Patentee before: Chongqing Science City Intellectual Property Operation Center Co.,Ltd. Effective date of registration: 20231114 Address after: No. 99 Xinfeng Avenue, Jinfeng Town, High tech Zone, Jiulongpo District, Chongqing, 400050 Patentee after: Chongqing Science City Intellectual Property Operation Center Co.,Ltd. Address before: No.1, East 1st ring road, Hantai District, Hanzhong City, Shaanxi Province Patentee before: Shaanxi University of Technology |