CN111235430A - Ti-Al alloy shaped charge liner material and powder metallurgy preparation method thereof - Google Patents
Ti-Al alloy shaped charge liner material and powder metallurgy preparation method thereof Download PDFInfo
- Publication number
- CN111235430A CN111235430A CN202010134356.XA CN202010134356A CN111235430A CN 111235430 A CN111235430 A CN 111235430A CN 202010134356 A CN202010134356 A CN 202010134356A CN 111235430 A CN111235430 A CN 111235430A
- Authority
- CN
- China
- Prior art keywords
- powder
- alloy
- liner material
- shaped charge
- particle size
- 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.)
- Granted
Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 122
- 239000000956 alloy Substances 0.000 title claims abstract description 122
- 229910004349 Ti-Al Inorganic materials 0.000 title claims abstract description 63
- 229910004692 Ti—Al Inorganic materials 0.000 title claims abstract description 63
- 239000000463 material Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000004663 powder metallurgy Methods 0.000 title abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 169
- 238000005245 sintering Methods 0.000 claims abstract description 36
- 239000002994 raw material Substances 0.000 claims abstract description 23
- 229910001257 Nb alloy Inorganic materials 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 17
- 229910000048 titanium hydride Inorganic materials 0.000 claims abstract description 17
- 238000009694 cold isostatic pressing Methods 0.000 claims abstract description 16
- 239000011812 mixed powder Substances 0.000 claims abstract description 14
- 229910000542 Sc alloy Inorganic materials 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims description 25
- 238000000498 ball milling Methods 0.000 claims description 24
- 229910018084 Al-Fe Inorganic materials 0.000 claims description 14
- 229910018192 Al—Fe Inorganic materials 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 12
- 229910000756 V alloy Inorganic materials 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 9
- 239000002202 Polyethylene glycol Substances 0.000 claims description 7
- 239000002270 dispersing agent Substances 0.000 claims description 7
- 229920001223 polyethylene glycol Polymers 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 abstract description 9
- 230000003647 oxidation Effects 0.000 abstract description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 6
- 238000010923 batch production Methods 0.000 abstract description 2
- 229910018085 Al-F Inorganic materials 0.000 abstract 1
- 229910018179 Al—F Inorganic materials 0.000 abstract 1
- 239000010936 titanium Substances 0.000 description 28
- 230000000694 effects Effects 0.000 description 12
- 239000007789 gas Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 239000004567 concrete Substances 0.000 description 5
- 238000004321 preservation Methods 0.000 description 5
- 239000011435 rock Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000007514 turning Methods 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
-
- B22F1/0003—
-
- 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
- B22F3/02—Compacting only
- B22F3/04—Compacting only by applying fluid pressure, e.g. by cold isostatic pressing [CIP]
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
-
- 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
- C22C27/02—Alloys based on vanadium, niobium, or tantalum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention provides a Ti-Al alloy shaped charge liner material and a powder metallurgy preparation method thereof, belonging to the technical field of alloys. The invention replaces Al powder with Al-based master alloy powder, can effectively avoid the oxidation of the alloy and reduce the inclusion of the alloy. The invention uses Ti powder and TiH2The powder and Al-Nb alloy powder are used as basic raw materials, and Al-V, Al-F is addede, Al-Sc alloy powder and Nb powder, and the obtained alloy has high density and low impurity content. The invention provides a preparation method of a Ti-Al series alloy shaped charge liner material, which adopts a powder metallurgy method, can obtain the Ti-Al series alloy shaped charge liner material with uniform and compact structure by carrying out cold isostatic pressing and low-pressure sintering on mixed powder, has low cost and good consistency, and is easy to realize the industrialized batch production of the Ti-Al series alloy shaped charge liner.
Description
Technical Field
The invention relates to the technical field of alloys, in particular to a Ti-Al alloy shaped charge liner material and a powder metallurgy preparation method thereof.
Background
In the process of oil and mine exploitation, the energy-gathering perforation technology is one of the most key technologies of the whole exploitation process, and the development of the perforation technology plays a vital role in increasing the yield of oil and gas wells, improving the perforation efficiency and the like. The liner is the most central part for forming the shaped jet and has important influence on the shaped perforation effect.
The material is a key factor for determining the penetration and hole opening effect of the shaped charge liner energy-gathering jet. The liner applied to the existing perforating bullet is mainly a powder metallurgy liner mainly made of copper, the jet flow of the liner has low perforation depth on rocks and concrete and small opening size (for example, for the concrete with the strength of 40MPa, the opening diameter is less than 0.2 times of the liner diameter), and the exploitation efficiency is greatly limited.
The Ti-Al alloy belongs to intermetallic compounds, has lower density compared with copper, higher elastic modulus, high specific strength, higher high temperature performance such as high-temperature strength, creep resistance, oxidation resistance and the like, and is a light high-temperature structural material with great potential. The pure Ti-Al alloy has poor room temperature plasticity and poor processabilityThe properties of Ti-Al alloys are often improved by alloying with different alloying elements, where the addition of Nb allows the formation of the more plastic B2 phase (Ti)2AlNb), improves the room temperature plasticity of the Ti-Al alloy, and simultaneously improves the high-temperature oxidation resistance and creep resistance of the Ti-Al alloy; the addition of V and Fe can further improve the plasticity of the alloy, increase the modulus and the hardness of the alloy and is beneficial to the mechanical property of the material; the addition of Sc improves the plasticity of the alloy by reducing the oxygen content in the alloy. The Ti-Al alloy has excellent high-temperature strength, can form short and thick energy-gathering jet flow when used as a liner, and realizes the effect of drilling a larger hole on a rock; meanwhile, the Ti-Al alloy has good high-temperature plasticity, so that the uniform deformation capability of the model cover under the explosive loading condition is stronger, and the jet flow is not easy to break, thereby obtaining good penetration depth and perforation stability.
At present, the preparation method of the Ti-Al alloy product mainly comprises the following steps: smelting and casting and powder metallurgy, wherein elemental powder such as titanium powder is used as a raw material, and low-cost batch production of Ti-Al alloy special-shaped parts such as Ti-Al alloy shaped covers can be realized by a cold isostatic pressing and low-pressure sintering method. In addition, alloy elements such as Ti, Al, Fe, Sc and the like are easy to oxidize, more impurities are easy to introduce in the sintering process, and the performance of the alloy is extremely unfavorable. Therefore, the use requirements of the product cannot be met.
Disclosure of Invention
In view of the above, the present invention provides a Ti-Al alloy liner material and a powder metallurgy method for preparing the same, wherein the Ti-Al alloy liner material has uniform and compact structure, low impurity content, large opening size when used in a liner, and stable opening effect.
In order to achieve the purpose of the invention, the invention provides the following technical scheme:
the invention provides a Ti-Al alloy shaped charge liner material, which comprises the following components of Ti- (10-30) Al- (10-50) Nb- (0-5) V- (0-5) Fe- (0-3) Sc (wt.%), and the balance of Ti;
the Ti-Al series alloy shaped charge liner material comprises the following raw materials in percentage by mass:
the sum of the mass percentages of all the raw materials is 100 percent.
Preferably, the particle size of the Ti powder is 5-50 mu m, and the Ti powder is TiH2The particle size of the powder is 5-50 μm, the particle size of the Al-Nb alloy powder is 20-200 μm, the particle size of the Al-Fe alloy powder is 20-200 μm, the particle size of the Al-Sc alloy powder is 20-200 μm, the particle size of the Al-V alloy powder is 20-200 μm, and the particle size of the Nb powder is 5-50 μm.
Preferably, the Al-Nb alloy powder contains Al- (40 to 70) Nb (wt.%), the Al-Sc alloy powder contains Al- (8 to 10) Sc (wt.%), the Al-Fe alloy powder contains Al- (20 to 40) Fe (wt.%), and the Al-V alloy powder contains Al- (10 to 50) V (wt.%).
The invention provides a preparation method of a Ti-Al series alloy shaped charge liner material, which comprises the following steps:
(1) mixing the raw materials, and performing wet ball milling treatment to obtain mixed powder;
(2) and sequentially carrying out cold isostatic pressing, low-pressure sintering and cooling on the mixed powder to obtain the Ti-Al series alloy shaped charge liner material.
Preferably, the medium for ball milling treatment in the step (1) is ethanol, the dispersing agent is polyethylene glycol, and the volume ratio of the ball milling medium to the raw materials is (1-2): 1; the ball milling time is 120-600 min, and the rotating speed is 20-100 r/min.
Preferably, the pressure of the cold isostatic pressing in the step (2) is 200-400 MPa, and the pressure maintaining time is 10-60 min.
Preferably, in the step (2), Ar gas is used as the low-pressure sintering atmosphere, the sintering pressure is 1-5 MPa, the sintering temperature is 1300-1600 ℃, and the heat preservation is carried out for 1-4 h at the sintering temperature.
At low costIn the preparation process of the Ti-Al series alloy by the powder metallurgy technology, the melting point of Al powder is low, the mutual diffusion rate of the Al powder and elements among Ti powder, Nb powder, Fe powder, Sc powder and V powder is greatly different, and an obvious Cokendall effect occurs in the sintering process, so that the porosity of the alloy is high, and the requirement of a liner product is difficult to meet. In addition, alloy elements such as Ti, Al, Fe, Sc and the like are easy to oxidize, more impurities are easy to introduce in the sintering process, and the performance of the alloy is extremely unfavorable. The invention aims to overcome the technical problems and prepare the Ti-Al alloy liner material with large hole opening capacity by using a powder metallurgy method. The Al-based master alloy powder is used for replacing Al powder to provide Al element, so that the oxidation of the alloy can be effectively avoided, and the inclusion of the alloy is reduced. The invention uses Ti powder and TiH2The powder and the Al-Nb alloy powder are used as basic raw materials and are matched with one or more of Al-V, Al-Fe, Al-Sc alloy powder and Nb powder, wherein the existence of Nb can improve the room-temperature plasticity, high-temperature oxidation resistance and creep resistance of the Ti-Al alloy, the addition of V and Fe can further improve the plasticity of the alloy, improve the modulus and the hardness of the alloy and is beneficial to the mechanical property of the material, and the addition of Sc can reduce the oxygen content in the alloy and improve the plasticity of the alloy. The Ti-Al alloy provided by the invention has uniform and compact structure, and when the Ti-Al alloy is used for the shaped charge liner, the opening size is large, and the opening effect is stable.
The invention provides a preparation method of a Ti-Al series alloy shaped charge liner material, which adopts a powder metallurgy method, can obtain an alloy with uniform and compact structure by carrying out cold isostatic pressing and low-pressure sintering on mixed powder, and has the advantages of low cost, good consistency, large opening size when being used for a shaped charge liner and stable opening effect. Meanwhile, the method provided by the invention has the advantages of low cost, simple and convenient operation and easy realization of industrial mass production. The embodiment result shows that the density of the alloy obtained by the invention can reach more than 97 percent, the impurity content is less than 0.3 percent, the opening effect on reinforced concrete and rocks is good when the alloy is used for a shaped charge liner, the opening diameter is 0.5-0.6 times of the liner diameter and the opening depth is 7-8 times of the liner diameter for the concrete with the strength of 40 MPa; for the concrete with the strength of 35MPa, the diameter of the opening is 0.6-0.7 times of the cover diameter, and the depth of the opening is 8-9 times of the cover diameter; for the rock with the strength of 60MPa, the diameter of the opening is 0.3-0.4 times of the cover diameter, and the depth of the opening is 5-6 times of the cover diameter.
Drawings
FIG. 1 is a photograph of a liner of Ti-Al alloy obtained in example 1;
FIG. 2 is a microstructure photograph of the Ti-Al alloy liner material obtained in example 1 at 50 times magnification under a light microscope;
FIG. 3 is a microstructure photograph of the Ti-Al alloy liner material obtained in example 1 under a scanning electron microscope at 1000 times magnification.
Detailed Description
The invention provides a Ti-Al alloy shaped charge liner material, which comprises the following components of Ti- (10-30) Al- (10-50) Nb- (0-5) V- (0-5) Fe- (0-3) Sc (wt.%), and the balance of Ti;
the Ti-Al series alloy shaped charge liner material comprises the following raw materials in percentage by mass:
the sum of the mass percentages of all the raw material powders is 100 percent.
Unless otherwise specified, the starting materials used in the present invention are commercially available.
The raw material of the Ti-Al alloy liner material provided by the invention comprises 30-60% of Ti powder by mass percentage. In the present invention, the particle size of the Ti powder is preferably 5 to 50 μm.
The raw material of the Ti-Al series alloy shaped charge liner material comprises 10-20% of TiH by mass percentage2And (3) pulverizing. In the present invention, the TiH2The particle size of the powder is preferably 5 to 50 μm.
The Ti-Al alloy liner material provided by the invention comprises 10-60% of Al-Nb alloy powder by mass percentage, the Al-Nb alloy powder preferably comprises Al- (40-70) Nb (wt.%), and the grain size of the Al-Nb alloy powder is preferably 20-200 μm.
The raw material of the Ti-Al series alloy liner material provided by the invention comprises 0-10% of Al-Sc alloy powder by mass percentage. In the present invention, the composition of the Al-Sc alloy powder is preferably Al- (8 to 10) Sc (wt.%), and the particle size of the Al-Sc alloy powder is preferably 20 to 200 μm.
The raw material of the Ti-Al series alloy shaped charge liner material comprises 0-10% of Al-Fe alloy powder by mass percentage. In the present invention, the Al-Fe alloy powder preferably contains Al- (20-40) Fe (wt.%), and the particle size of the Al-Fe alloy powder is preferably 20-200 μm.
The raw material of the Ti-Al series alloy shaped charge liner material comprises 0-10% of Al-V alloy powder by mass percentage. In the present invention, the Al-V alloy powder preferably contains Al- (10 to 50) V (wt.%), and the particle size of the Al-V alloy powder is preferably 20 to 200 μm.
The raw material of the Ti-Al series alloy shaped charge liner comprises 0-20% of Nb powder by mass percentage. In the present invention, the particle size of the Nb powder is preferably 5 to 50 μm.
The invention uses Al-based master alloy powder to replace Al powder as raw material, provides Al element, and adds Ti powder and TiH2The powder and the Nb powder can effectively avoid the oxidation of the alloy and reduce the inclusion of the alloy.
The invention provides a preparation method of a Ti-Al series alloy shaped charge liner material, which comprises the following steps:
(1) mixing the raw materials, and performing wet ball milling treatment to obtain mixed powder;
(2) and sequentially carrying out cold isostatic pressing, low-pressure sintering and cooling on the mixed powder to obtain the Ti-Al series alloy shaped charge liner material.
The raw materials are mixed and subjected to wet ball milling treatment to obtain mixed powder. The present invention does not require special handling of the mixing means, and mixing means well known to those skilled in the art may be used. In the invention, the ball milling medium for ball milling treatment is preferably ethanol, the dispersing agent is preferably polyethylene glycol, and the volume ratio of the ball milling medium to the raw materials is preferably (1-2): 1; the time of ball milling treatment is preferably 120-600 min; the rotating speed of the ball milling treatment is preferably 20-100 r/min. The present invention preferably uses an inclined ball mill for ball milling.
The present invention preferably dries the mixed powder after ball milling, and the present invention does not require a special drying method, and a drying method known to those skilled in the art can be used.
After the mixed powder is obtained, the mixed powder is subjected to cold isostatic pressing, low-pressure sintering and cooling in sequence to obtain the Ti-Al alloy liner material. According to the invention, the density of the alloy sintered can be remarkably improved by carrying out cold isostatic pressing-low pressure sintering on the mixed powder. In the invention, the forming pressure of the cold isostatic pressing is preferably 200-400 MPa; the pressure maintaining time is preferably 10-60 min. In embodiments of the invention, when the alloy is used to make liners, the cold isostatic pressing die is preferably a liner die.
The present invention preferably performs the low pressure sintering in a tube furnace. In the invention, the atmosphere of the low-pressure sintering is preferably Ar gas, the pressure is preferably 1-5 MPa, the temperature is preferably 1300-1600 ℃, the temperature is preferably kept for 1-4 h at the sintering temperature, and the sintering temperature is cooled along with the furnace.
The Ti-Al series alloy shaped charge liner material prepared by the preparation method of the invention is α2The phase and the B2 phase are formed, the grain size range is 50-500 mu m, the structure is uniform and compact, the problem that alloy elements such as Ti, Al, Fe, Sc and the like are easily oxidized can be avoided, and the inclusions of the alloy are reduced.
The Ti-Al series alloy shaped charge liner material is prepared by adopting a powder metallurgy method, and the obtained alloy structure is uniform and compact by carrying out cold isostatic pressing and low-pressure sintering on the mixed powder, and when the material is used for a shaped charge liner, the opening size is large and the opening effect is stable. Meanwhile, the method provided by the invention has the advantages of low cost, simple and convenient operation and easy realization of industrial mass production.
The Ti-Al based alloy liner material and the powder metallurgy method for producing the same according to the present invention will be described in detail with reference to the following examples, but they should not be construed as limiting the scope of the present invention.
Example 1
Alloy components: ti-18Al-24Nb (wt.%)
(1) Weighing Ti powder and TiH according to the proportion2The alloy powder comprises powder, Al-50Nb (wt.%) master alloy powder and Nb powder, and the mass percentages are as follows: 45% of Ti powder and TiH 213% of powder, 36% of Al-Nb alloy powder and 6% of Nb powder, wherein the particle diameter of Ti powder is 45 mu m, and the TiH powder2The grain size of the powder is 45 mu m, the grain size of the Al-Nb alloy powder is 120 mu m, and the grain size of the Nb powder is 20 mu m.
(2) Ethanol is used as a ball milling medium, polyethylene glycol is used as a dispersing agent, and the volume ratio of the ball milling medium to powder is 1.6: 1, using an inclined ball mill to treat Ti powder and TiH2And fully mixing the powder, the Al-Nb powder and the Nb powder at the rotating speed of 20r/min for 600 min.
(3) And (3) drying the powder obtained in the step (2), and then placing the dried powder into a liner die for cold isostatic pressing, wherein the forming pressure is 200MPa, and the pressure maintaining time is 60 min.
(4) And (4) placing the liner blank obtained in the step (3) into a sintering furnace for low-pressure sintering, wherein the pressure of Ar gas is as follows: 3MPa, sintering temperature: 1400 ℃, heat preservation time: 2.5h, cooling along with the furnace.
The obtained liner sintered compact is processed by precision turning to obtain Ti-Al alloy liner, and the photo of the liner is shown in FIG. 1.
The microstructure photographs of the obtained Ti-Al series alloy liner material are shown in FIGS. 2 and 3, and it can be seen from FIGS. 2 and 3 that the alloy is a two-state structure, namely, a connected Widmannstatten structure (α)2Phase + B2 phase) randomly distributed equiaxed α2And (4) phase(s).
Example 2
Alloy components: ti-28Al-22Nb-2V-0.6Fe (wt.%)
(1) Weighing Ti powder and TiH according to the proportion2The alloy powder comprises powder, Al-50Nb (wt.%), Al-30V (wt.%) and Al-30Fe (wt.%): 35.4% of Ti powder and TiH 212% of powder, 22% of Al-Nb alloy powder, 2% of Al-Fe alloy powder and 6.6% of Al-V alloy powder. Ti powder particle diameter 38 mu m, TiH2The grain size of the powder is 38 mu m, the grain size of the Al-Nb alloy powder is 80 mu m, the grain size of the Al-V alloy powder is 75 mu m, the grain size of the Al-Fe alloy powder is 95 mu m, and the grain size of the Nb powder is 32 mu m.
(2) The powder mixing process comprises the following steps: ethanol is used as a ball milling medium,polyethylene glycol is used as a dispersing agent, and the volume ratio of the ball-milling medium to the powder is 1.3: 1, using an inclined ball mill to treat Ti powder and TiH2And fully mixing the powder, the Al-Nb powder, the Al-V powder, the Al-Fe powder and the Nb powder at the rotating speed of 100r/min for 120 min.
(3) And (3) drying the powder obtained in the step (2), and then placing the dried powder into a shaped charge liner die for cold isostatic pressing, wherein the forming pressure is 350MPa, and the pressure maintaining time is 40 min.
(4) And (4) placing the liner blank obtained in the step (3) into a sintering furnace for sintering, wherein the pressure of Ar gas is as follows: 4MPa, sintering temperature: 1380 ℃, heat preservation time: and 3h, cooling along with the furnace.
And machining the prepared shaped charge liner sintered blank by using a precise turning mode to finally prepare the Ti-Al series alloy shaped charge liner.
Example 3
Alloy components: ti-24Al-21Nb-0.5Sc (wt.%)
(1) Weighing Ti powder and TiH according to the proportion2The alloy powder comprises powder, Al-50Nb (wt.%) master alloy powder, Al-10Sc (wt.%) master alloy powder and Nb powder, and the mass percentages are as follows: ti powder 41%, TiH213.5% of powder, 39% of Al-Nb alloy powder, 5% of Al-Sc powder and 1.5% of Nb powder. Ti powder particle diameter of 30 μm, TiH2The grain size of the powder is 30 μm, the grain size of the Al-Nb alloy powder is 145 μm, the grain size of the Al-Sc alloy powder is 120 μm, and the grain size of the Nb powder is 10 μm.
(2) The powder mixing process comprises the following steps: ethanol is used as a ball milling medium, polyethylene glycol is used as a dispersing agent, and the volume ratio of the ball milling medium to powder is 1.8: 1, using an inclined ball mill to treat Ti powder and TiH2And fully mixing the powder, the Al-Nb powder, the Al-Sc powder and the Nb powder at the rotating speed of 45r/min for 400 min.
(3) And (3) drying the powder obtained in the step (2), and then placing the dried powder into a liner die for cold isostatic pressing, wherein the forming pressure is 400MPa, and the pressure maintaining time is 30 min.
(4) And (4) placing the liner blank obtained in the step (3) into a sintering furnace for sintering, wherein the pressure of Ar gas is as follows: 4.5MPa, sintering temperature: 1300 ℃, heat preservation time: and 3.5h, cooling along with the furnace.
And machining the prepared shaped charge liner sintered blank by using a precise turning mode to finally prepare the Ti-Al series alloy shaped charge liner.
Example 4
Alloy components: ti-20Al-20Nb-0.6Fe-0.5Sc-2V (wt.%)
(1) Weighing Ti powder and TiH according to the proportion2Powder, Al-50Nb (wt.%) master alloy powder, Al-30Fe (wt.%) master alloy powder, Al-10Sc (wt.%) master alloy powder, Al-30V (wt.%) master alloy powder, and Nb powder, the mass percentages of which are: 42.7% of Ti powder and TiH214.2% of powder, 2% of Al-Fe alloy powder, 27.8% of Al-Nb alloy powder, 5% of Al-Sc alloy powder, 6.7% of Al-V alloy powder and 6.1% of Nb powder. Ti powder particle size 40 μm, TiH2The grain size of the powder is 40 mu m, the grain size of the Al-Fe alloy powder is 85 mu m, the grain size of the Al-Nb alloy powder is 90 mu m, the grain size of the Al-Sc alloy powder is 120 mu m, the grain size of the Al-V alloy powder is 75 mu m, and the grain size of the Nb powder is 15 mu m.
(2) The powder mixing process comprises the following steps: ethanol is used as a ball milling medium, polyethylene glycol is used as a dispersing agent, and the volume ratio of liquid to powder is 2: 1, using an inclined ball mill to mix Ti powder and TiH2And fully mixing the powder, the Al-Fe powder, the Al-Sc powder, the Al-V powder and the Nb powder at the rotating speed of 60r/min for 350 min.
(3) And (3) drying the powder obtained in the step (2), and then placing the dried powder into a shaped charge liner die for cold isostatic pressing, wherein the forming pressure is 350MPa, and the pressure maintaining time is 50 min.
(4) And (4) placing the liner blank obtained in the step (3) into a sintering furnace for sintering, wherein the pressure of Ar gas is as follows: 2MPa, sintering temperature: 1500 ℃, heat preservation time: and 4h, cooling along with the furnace.
And machining the prepared shaped charge liner sintered blank by using a precise turning mode to finally prepare the Ti-Al series alloy shaped charge liner.
Performance testing
The Ti-Al alloy liner obtained in examples 1 to 4 was tested for compactness and impurity content, and the results are shown in Table 1.
Wherein the test standard of the density is GB/T5163-2006; the test standard for the impurity content is GB/T223.16-1991.
TABLE 1 results of testing density and impurity content of Ti-Al alloy liner obtained in examples 1 to 4
| Item | Density/% | Content of impurities/%) |
| Example 1 | 97.2 | 0.26 |
| Example 2 | 97.5 | 0.23 |
| Example 3 | 97.8 | 0.1 |
| Example 4 | 98.0 | 0.1 |
The Ti-Al alloy liners obtained in examples 1 to 4 were tested for their effect in drilling concrete and rock, and the results are shown in Table 2.
TABLE 2 test results of the hole-forming effect of the Ti-Al alloy shaped charge liners obtained in examples 1 to 4
From the above results, it is understood that the Ti-Al alloy provided by the present invention has a uniform and dense structure, and when used in a liner, has a large opening size and a stable opening effect.
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 (7)
1. A Ti-Al alloy liner material is characterized in that the components of the liner material are Ti- (10-30) Al- (10-50) Nb- (0-5) V- (0-5) Fe- (0-3) Sc (wt.%), and the balance is Ti;
the Ti-Al series alloy shaped charge liner material comprises the following raw materials in percentage by mass:
the sum of the mass percentages of all the raw materials is 100 percent.
2. The Ti-Al alloy liner material as set forth in claim 1, wherein the Ti powder has a particle size of 5 to 50 μm and a particle size of TiH2The particle size of the powder is 5-50 μm, the particle size of the Al-Nb alloy powder is 20-200 μm, the particle size of the Al-Fe alloy powder is 20-200 μm, the particle size of the Al-Sc alloy powder is 20-200 μm, the particle size of the Al-V alloy powder is 20-200 μm, and the particle size of the Nb powder is 5-50 μm.
3. The liner material of Ti-Al alloy according to claim 1, wherein the Al-Nb alloy powder contains Al- (40 to 70) Nb (wt.%), the Al-Sc alloy powder contains Al- (8 to 10) Sc (wt.%), the Al-Fe alloy powder contains Al- (20 to 40) Fe (wt.%), and the Al-V alloy powder contains Al- (10 to 50) V (wt.%).
4. The method for preparing a Ti-Al alloy liner material as set forth in any one of claims 1 to 3, which comprises the steps of:
(1) mixing the raw materials, and performing wet ball milling treatment to obtain mixed powder;
(2) and sequentially carrying out cold isostatic pressing, low-pressure sintering and cooling on the mixed powder to obtain the Ti-Al series alloy shaped charge liner material.
5. The preparation method according to claim 4, wherein the medium for ball milling in the step (1) is ethanol, the dispersing agent is polyethylene glycol, and the volume ratio of the ball milling medium to the raw materials is (1-2): 1; the ball milling time is 120-600 min, and the rotating speed is 20-100 r/min.
6. The production method according to claim 4, wherein the pressure of cold isostatic pressing in the step (2) is 200 to 400MPa, and the dwell time is 10 to 60 min.
7. The preparation method according to claim 4, wherein in the step (2), Ar gas is used as the atmosphere for low-pressure sintering, the sintering pressure is 1-5 MPa, the sintering temperature is 1300-1600 ℃, the temperature is kept at the sintering temperature for 1-4 h, and furnace cooling is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010134356.XA CN111235430B (en) | 2020-03-02 | 2020-03-02 | Ti-Al alloy shaped charge liner material and powder metallurgy preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010134356.XA CN111235430B (en) | 2020-03-02 | 2020-03-02 | Ti-Al alloy shaped charge liner material and powder metallurgy preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111235430A true CN111235430A (en) | 2020-06-05 |
| CN111235430B CN111235430B (en) | 2021-01-15 |
Family
ID=70875105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010134356.XA Active CN111235430B (en) | 2020-03-02 | 2020-03-02 | Ti-Al alloy shaped charge liner material and powder metallurgy preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111235430B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101802246A (en) * | 2007-10-24 | 2010-08-11 | 爱沃特株式会社 | Method of treating surface of Ti-Al alloy and Ti-Al alloy obtained by the same |
| CN102041408A (en) * | 2010-12-29 | 2011-05-04 | 洛阳双瑞精铸钛业有限公司 | High-elasticity titanium alloy material for golf head |
| CN102133641A (en) * | 2011-04-19 | 2011-07-27 | 广州有色金属研究院 | Powder metallurgy method of Ti-6Al-4V alloy |
| CN102888530A (en) * | 2012-05-17 | 2013-01-23 | 吉林省必晟科技开发有限公司 | Method for preparing TiAl-based alloy |
| CN104745864A (en) * | 2013-12-26 | 2015-07-01 | 北京有色金属研究总院 | A preparing process of a titanium-based getter |
| CN107699738A (en) * | 2017-09-29 | 2018-02-16 | 成都露思特新材料科技有限公司 | A kind of fine-grained TiAl alloy and preparation method thereof, aero-engine, automobile |
| CN108015291A (en) * | 2017-12-26 | 2018-05-11 | 天钛隆（天津）金属材料有限公司 | A kind of method that powder metallurgy prepares Ti2AlNb based alloys |
| CN108342601A (en) * | 2018-01-12 | 2018-07-31 | 西安工程大学 | Ti22Al25NbxV alloy preparation methods based on powder metallurgic method |
| CN108396174A (en) * | 2018-03-14 | 2018-08-14 | 燕山大学 | Ti-22Al-25Nb/Al2O3The preparation method of composite material |
| CN108456805A (en) * | 2018-04-20 | 2018-08-28 | 温州市赢创新材料技术有限公司 | A kind of beta titanium alloy and its manufacturing method for being implanted into bone |
| CN110777311A (en) * | 2019-12-10 | 2020-02-11 | 中国科学院金属研究所 | Ti 2Stress-relief annealing heat treatment process of AlNb alloy member |
-
2020
- 2020-03-02 CN CN202010134356.XA patent/CN111235430B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101802246A (en) * | 2007-10-24 | 2010-08-11 | 爱沃特株式会社 | Method of treating surface of Ti-Al alloy and Ti-Al alloy obtained by the same |
| CN102041408A (en) * | 2010-12-29 | 2011-05-04 | 洛阳双瑞精铸钛业有限公司 | High-elasticity titanium alloy material for golf head |
| CN102133641A (en) * | 2011-04-19 | 2011-07-27 | 广州有色金属研究院 | Powder metallurgy method of Ti-6Al-4V alloy |
| CN102888530A (en) * | 2012-05-17 | 2013-01-23 | 吉林省必晟科技开发有限公司 | Method for preparing TiAl-based alloy |
| CN104745864A (en) * | 2013-12-26 | 2015-07-01 | 北京有色金属研究总院 | A preparing process of a titanium-based getter |
| CN107699738A (en) * | 2017-09-29 | 2018-02-16 | 成都露思特新材料科技有限公司 | A kind of fine-grained TiAl alloy and preparation method thereof, aero-engine, automobile |
| CN108015291A (en) * | 2017-12-26 | 2018-05-11 | 天钛隆（天津）金属材料有限公司 | A kind of method that powder metallurgy prepares Ti2AlNb based alloys |
| CN108342601A (en) * | 2018-01-12 | 2018-07-31 | 西安工程大学 | Ti22Al25NbxV alloy preparation methods based on powder metallurgic method |
| CN108396174A (en) * | 2018-03-14 | 2018-08-14 | 燕山大学 | Ti-22Al-25Nb/Al2O3The preparation method of composite material |
| CN108456805A (en) * | 2018-04-20 | 2018-08-28 | 温州市赢创新材料技术有限公司 | A kind of beta titanium alloy and its manufacturing method for being implanted into bone |
| CN110777311A (en) * | 2019-12-10 | 2020-02-11 | 中国科学院金属研究所 | Ti 2Stress-relief annealing heat treatment process of AlNb alloy member |
Non-Patent Citations (1)
| Title |
|---|
| 王孟光 等: "Ti3Al基合金室温塑性的改善方法", 《稀有金属快报》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111235430B (en) | 2021-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20040065173A1 (en) | Method for preparing cryomilled aluminum alloys and components extruded and forged therefrom | |
| CN110358941B (en) | Tungsten-based alloy material and preparation method thereof | |
| US20110146853A1 (en) | Titanium Alloy Microstructural Refinement Method and High Temperature, High Strain Rate Superplastic Forming of Titanium Alloys | |
| CN109852834B (en) | Preparation method of nano ceramic particle reinforced metal-based hierarchical configuration composite material | |
| CN110093548B (en) | Ultrafine-grained high-toughness high-entropy alloy containing rare earth Gd and preparation method thereof | |
| US3902862A (en) | Nickel-base superalloy articles and method for producing the same | |
| WO2010102206A2 (en) | High strength l12 aluminum alloys produced by cryomilling | |
| CN114959406A (en) | Oscillatory pressure sintering ultrahigh-temperature medium-entropy ceramic reinforced refractory fine-grain medium-entropy alloy composite material | |
| JP2546660B2 (en) | Method for producing ceramics dispersion strengthened aluminum alloy | |
| CN113862540A (en) | MAX phase added molybdenum alloy and preparation method thereof | |
| US5000910A (en) | Method of manufacturing intermetallic compound | |
| CN111235430B (en) | Ti-Al alloy shaped charge liner material and powder metallurgy preparation method thereof | |
| CN111575599B (en) | Precipitation strengthening type high-temperature steel bonded hard alloy and preparation method thereof | |
| CN113798494A (en) | TiB2Particle reinforced magnesium-based composite material and preparation method thereof | |
| US20180105901A1 (en) | Method of making a molybdenum alloy having a high titanium content | |
| CN105483478B (en) | A kind of preparation method of high strength alumin ium alloy | |
| CN110983152A (en) | Fe-Mn-Si-Cr-Ni based shape memory alloy and preparation method thereof | |
| CN113088781B (en) | High-entropy hard alloy and preparation method and application thereof | |
| EP0221746B1 (en) | Activated sintering of metallic powders | |
| JPS62287041A (en) | Production of high-alloy steel sintered material | |
| JPH08325666A (en) | Niobium-aluminum sintered compact and its production | |
| CN115011854B (en) | High-strength high-toughness light titanium-based metal ceramic with nanoparticle and flocculent solid solution phase, and preparation method and application thereof | |
| CN1552939A (en) | Lanthanum-base amorphous alloy composite material containing infusible metal particle | |
| CN111893337B (en) | Preparation method of high-temperature alloy | |
| CN111979454B (en) | Tungsten-aluminum alloy 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 |