CN117626032A - Method for preparing high-strength plastic TC4 titanium alloy composite material by microwave sintering - Google Patents
Method for preparing high-strength plastic TC4 titanium alloy composite material by microwave sintering Download PDFInfo
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 62
- 239000002131 composite material Substances 0.000 title claims abstract description 61
- 238000009768 microwave sintering Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000000843 powder Substances 0.000 claims abstract description 48
- 239000000463 material Substances 0.000 claims abstract description 46
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000000498 ball milling Methods 0.000 claims abstract description 32
- 239000011812 mixed powder Substances 0.000 claims abstract description 23
- 239000011159 matrix material Substances 0.000 claims abstract description 18
- 238000009694 cold isostatic pressing Methods 0.000 claims abstract description 13
- 239000002243 precursor Substances 0.000 claims abstract description 11
- 230000002787 reinforcement Effects 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims abstract description 5
- 238000005245 sintering Methods 0.000 claims description 32
- 238000002156 mixing Methods 0.000 claims description 24
- 239000002245 particle Substances 0.000 claims description 15
- 238000000465 moulding Methods 0.000 claims description 8
- 239000012300 argon atmosphere Substances 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract description 9
- 238000002360 preparation method Methods 0.000 abstract description 8
- 239000010936 titanium Substances 0.000 abstract description 8
- 229910010271 silicon carbide Inorganic materials 0.000 abstract description 7
- 229910052719 titanium Inorganic materials 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000005543 nano-size silicon particle Substances 0.000 abstract description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 8
- 229910021341 titanium silicide Inorganic materials 0.000 description 7
- 229910052786 argon Inorganic materials 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000011049 filling Methods 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000002105 nanoparticle Substances 0.000 description 3
- 238000002490 spark plasma sintering Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000883 Ti6Al4V Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical group [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The invention discloses a method for preparing a high-strength plastic TC4 titanium alloy composite material by microwave sintering, which comprises the following steps: 1. selecting TC4 titanium alloy powder as a matrix and nano silicon carbide powder as a reinforcement; 2. ball-milling TC4 titanium alloy powder and silicon carbide powder to mix uniformly; 3. pressing the mixed powder to form; 4. and carrying out microwave sintering on the blank to obtain the high-strength plastic TC4 titanium alloy composite material. The invention adopts (alpha+beta) TC4 titanium alloy, nano silicon carbide is added as a reinforced phase precursor material, and the composite material with high density and excellent mechanical property is prepared by means of low-energy ball milling, cold isostatic pressing and microwave sintering, the preparation process has low cost, wide application range and short time consumption, and the whole preparation process is easy to realize, thereby providing a feasible method for industrialized mass production of the titanium-based composite material with complex structure and providing a new idea for designing and developing the ultra-high-strength metal-based composite material.
Description
Technical Field
The invention belongs to the technical field of advanced structural materials, and particularly relates to a method for preparing a high-strength plastic TC4 titanium alloy composite material by microwave sintering.
Background
The ceramic particle reinforced titanium-based composite material has the advantages of simple preparation, low cost, good isotropy, ultrahigh strength and the like, so that the ceramic particle reinforced titanium-based composite material has wide application prospect in the important industrial fields of aerospace, weaponry, petrochemical industry and other countries.
Taking Ti-6Al-4V (TC 4) titanium alloy as an example, since it is the most commercially mature titanium alloy, and is combined with TiC and Ti 5 Si 3 The thermal expansion coefficients of the ceramic reinforcements are similar, so TC4 becomes an alternative to the high-strength plastic titanium matrix composite. At present, the preparation method of the TC4 titanium alloy composite material mainly comprises a casting method and a powder metallurgy method. The morphology and the distribution of the reinforcement in the composite material prepared by the casting method are not controllable, and matrix grains are easy to grow.
The conventional powder metallurgy method mainly comprises vacuum sintering, hot-press sintering, spark plasma sintering and the like. Wherein, the density of the composite material prepared by vacuum sintering is lower, which seriously affects the performance. The compactness of the composite material prepared by hot-press sintering and spark plasma sintering is more than 95%, but the biggest problem is that the size of the sintered material is limited by the cavity space of equipment, and only a material blank with smaller size can be sintered at a time. This can severely limit material design and application, and can be costly to produce and long in cycle time, with significant difficulty in industrialization. Compared with vacuum sintering and hot-pressed sintering, the microwave sintering has high heating rate and uniform heating of samples, and can greatly improve the microstructure and mechanical properties of sintered products; compared with spark plasma sintering, the method does not need to use a die, is suitable for preparing products with complex shapes and large sizes, and has industrial application prospect. The microwave sintering technology is mainly applied to sintering of ceramic materials, and although the traditional concept that metal materials cannot be heated by microwaves is broken through, various block metal materials are successfully prepared by heating metal powder through the microwave sintering technology, and the application in the aspect of preparing titanium-based composite materials still remains to be developed.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method for preparing a high-strength plastic TC4 titanium alloy composite material by microwave sintering aiming at the defects in the prior art. The method adopts the (alpha+beta) TC4 titanium alloy matrix material, nano silicon carbide is added as the reinforced phase precursor material, and the composite material with high density and excellent mechanical property is prepared by means of low-energy ball milling, cold isostatic pressing and microwave sintering, the preparation process has low cost, wide application range and short time consumption, the whole preparation process is easy to realize, a feasible method is provided for industrialized mass production of the titanium-based composite material with complex structure, and a new idea is provided for design and development of novel ultra-high-strength metal-based composite material.
In order to solve the technical problems, the invention adopts the following technical scheme: the method for preparing the high-strength plastic TC4 titanium alloy composite material by microwave sintering is characterized by comprising the following steps of:
step one, selecting materials: selecting (alpha+beta) TC4 titanium alloy powder as a matrix material and nano silicon carbide powder as a precursor material of the reinforcement;
step two, mixing powder: placing TC4 titanium alloy powder and silicon carbide powder selected in the first step into a ball mill for ball milling and uniformly mixing to obtain mixed powder;
step three, molding: pressing and forming the mixed powder obtained in the second step by using cold isostatic pressing equipment to obtain a blank;
step four, sintering: carrying out microwave sintering on the blank obtained in the step three by utilizing a microwave sintering furnace to obtain a high-strength plastic TC4 titanium alloy composite material; the density of the high-strength TC4 titanium alloy composite material reaches more than 95%, the tensile strength is 1150-1350 MPa, and the elongation after fracture is 6-14%.
The method comprises the steps of taking (alpha+beta) TC4 titanium alloy as a matrix material, taking nano silicon carbide as a precursor material of a reinforcement, adopting a low-energy ball milling method, firstly, uniformly mixing TC4 powder and silicon carbide powder in a ball milling way, and then performing microwave sintering molding to obtain a high-strength plastic TC4 titanium alloy composite material; the purpose of low-energy ball milling in the invention is to uniformly mix TC4 powder and silicon carbide powder, which is the key point of uniform heating of composite material powder in the subsequent microwave sintering process, in addition, the low-energy ball milling can ensure that different powders are uniformly mixed without damaging the shapes of TC4 powder and silicon carbide powder, can ensure that the powder maintains good sphericity without affecting the fluidity, and provides guarantee for high density and excellent mechanical property of the composite material after microwave sintering.
In the invention, an electric field and a magnetic field can act on substances simultaneously in the process of heating the substances by microwaves, and heating and sintering of metal powder in a microwave field are realized through a thermal effect and a non-thermal effect, wherein the thermal effect is related to the particle size of the powder, the smaller the particle size is, the better the heating effect of the powder in microwaves is, the powder with smaller particle size has higher cost on the premise of ensuring higher purity, the mass production is not facilitated, the powder with larger particle size can seriously reduce the efficiency of microwave sintering and the compactness of the material, and the mechanical property of the material is reduced, so that the alloy powder with smaller particle size between 15 mu m and 53 mu m is used, and the efficiency and quality of powder sintering are improved while the cost of raw materials is controlled.
According to the invention, 0.6 to 1.2 percent of nano silicon carbide powder is added into matrix powder, in terms of components, a certain amount of nano silicon carbide powder can react with titanium element in the matrix in situ to generate ceramic reinforced phase titanium carbide and titanium silicide, as silicon carbide is adhered to the surface of TC4 powder after ball milling, titanium carbide on the surface of the powder forms a three-dimensional network structure in the inner space of a composite material after sintering, and silicon element can be dissolved in beta phase of TC4 alloy and separated out in a nano titanium silicide form in the sintering process, so that titanium silicide in the composite material is in dispersion distribution, the grain size of the matrix can be remarkably reduced, the strong plasticity of the material can be improved, the mechanical property of the material can be further increased, the ultra-low reinforced phase content is insufficient to strengthen the TC4 alloy, and the ultra-high reinforced phase content can seriously reduce the plasticity of the composite material, so that brittle fracture is caused.
According to the invention, in the aspect of a microwave heating mechanism, the introduced silicon carbide can enable the mixed powder to quickly absorb microwaves at low temperature, so that the mixed powder is heated to a higher temperature, and the mixed powder is continuously heated at high temperature through a heat transfer mechanism, so that the continuous efficient and stable microwave sintering is ensured, and the uniform microstructure and excellent mechanical properties of the composite material are further ensured.
The method for preparing the high-strength plastic TC4 titanium alloy composite material by microwave sintering is characterized in that the grain size of TC4 titanium alloy powder in the first step is 15-53 mu m, and the grain size of silicon carbide powder is 40nm. According to the invention, by controlling the particle sizes of the TC4 titanium alloy powder and the silicon carbide powder, the nano-sized silicon carbide is ensured to be adhered to the surface of the TC4 powder in the ball milling process, and nano-sized and micro-sized reinforcing phase particles are easy to form in the microwave sintering process.
The method for preparing the high-strength plastic TC4 titanium alloy composite material by microwave sintering is characterized in that the mass content of silicon carbide powder in the mixed powder in the second step is 0.6-1.2%. According to the invention, by controlling the proportion of TC4 titanium alloy powder and silicon carbide powder, nano silicon carbide powder can react with titanium element in a matrix in situ to generate ceramic reinforced phase titanium carbide and titanium silicide, so that the grain size of the matrix can be obviously reduced, the strong plasticity of the material is improved, the mechanical property of the material can be further increased by the titanium carbide with a three-dimensional network structure and the titanium silicide distributed in a dispersed manner, the content of the reinforced phase is insufficient to strengthen TC4 alloy, and the plasticity of the composite material is seriously reduced by the content of the reinforced phase which is too high, so that brittle failure is caused.
The method for preparing the high-strength plastic TC4 titanium alloy composite material by microwave sintering is characterized in that the rotating speed of ball milling and mixing in the second step is 180 rpm-250 rpm. The invention can also maintain better sphericity of the powder on the premise of ensuring uniform powder mixing by controlling the rotating speed of ball milling and uniform mixing, is beneficial to improving the compactness of the sintered material, and can lead the powder to be unevenly mixed, lead the precursor powder to be agglomerated and seriously influence the mechanical property of the sintered material due to the low rotating speed, ball-to-material ratio or ball milling time. The high rotating speed, ball-material ratio or ball milling time can seriously damage the sphericity of the powder, and reduce the density and mechanical property of the material.
The method for preparing the high-strength plastic TC4 titanium alloy composite material by microwave sintering is characterized in that the pressing and forming in the step three is cold isostatic pressing. According to the invention, the mixed powder is compacted by cold isostatic pressing, so that the compactness of the material is improved.
The method for preparing the high-strength plastic TC4 titanium alloy composite material by microwave sintering is characterized in that the temperature of the microwave sintering in the fourth step is 850-1050 ℃, and the microwave sintering is performed in an argon atmosphere. According to the invention, after vacuumizing in microwave sintering, argon is introduced to avoid serious oxidation of the material. By controlling parameters of microwave sintering, incomplete powder sintering caused by too low sintering temperature, increased porosity and reduced compactness in the material, and severe growth of grains in the composite material caused by too high sintering temperature are avoided, and the strength of the material is obviously reduced.
Compared with the prior art, the invention has the following advantages:
1. the invention adopts the (alpha+beta) TC4 titanium alloy matrix material, nano silicon carbide is added as the reinforced phase precursor material, and the composite material with high density and excellent mechanical property is prepared by means of low-energy ball milling, cold isostatic pressing and microwave sintering, the preparation process has low cost, wide application range and short time consumption of the whole preparation process, and the invention provides a feasible method for industrialized mass production of the titanium-based composite material with complex structure and also provides a new idea for design and development of novel ultra-high-strength metal-based composite material.
2. The microstructure of the TC4 titanium alloy composite material prepared by microwave sintering is composed of a strip-shaped (alpha+beta) phase, micron-sized titanium carbide particles with a three-dimensional network structure and nano-sized titanium silicide particles in dispersion distribution. The TC4 composite material after sintering shows excellent mechanical properties through fine crystal strengthening, alpha phase and beta phase isomerism strengthening and multistage multi-scale strengthening of titanium carbide particles and titanium silicide particles.
3. The TC4 titanium alloy composite material prepared by the method has excellent mechanical properties, the density of the composite material reaches more than 95%, the tensile strength is 1150MPa to 1350MPa, the elongation after fracture is 6% to 13%, and the composite material is high in strength and elongation.
The technical scheme of the invention is further described in detail by examples.
Detailed Description
Example 1
The embodiment comprises the following steps:
step one, selecting materials: selecting (alpha+beta) TC4 titanium alloy with the grain diameter of 15-53 mu m as a matrix material, and selecting silicon carbide powder with the grain diameter of 40nm as a precursor material of the reinforcement;
step two, mixing powder: placing TC4 titanium alloy powder and silicon carbide powder selected in the first step into a ball mill for ball milling and uniformly mixing to obtain mixed powder; the mass content of the silicon carbide powder in the mixed powder is 0.6%, the rotation speed of ball milling and mixing is 180rpm, the ball-material ratio is 5:1, and the ball milling time is 7 hours;
step three, molding: filling the mixed powder obtained in the second step into a die by using cold isostatic pressing equipment to be pressed and molded, wherein the pressure is 400MPa, so as to obtain a blank;
step four, sintering: and (3) carrying out microwave sintering on the blank obtained in the step (III) by using a microwave sintering furnace, vacuumizing and then introducing argon to avoid serious oxidation of the material before sintering, wherein the microwave sintering temperature is 1050 ℃, the microwave sintering time is 10min, and the high-strength TC4 titanium alloy composite material is obtained after sintering.
Through detection, the density of the high-strength plastic TC4 titanium alloy composite material prepared by the embodiment is 97%, the tensile strength is 1244MPa, and the elongation after fracture is 9%.
Comparative example 1
The comparative example comprises the following steps:
step one, selecting materials: selecting (alpha+beta) TC4 titanium alloy as a matrix material, wherein the grain diameter of TC4 powder is 15-53 mu m;
step two, mixing powder: placing TC4 titanium alloy powder selected in the first step into a ball mill for ball milling and mixing uniformly, wherein the rotation speed of ball milling and mixing uniformly is 180rpm, the ball-material ratio is 5:1, and the ball milling time is 7 hours;
step three, molding: filling the powder obtained in the second step into a die by using cold isostatic pressing equipment to be pressed and molded, wherein the pressure is 400MPa, so as to obtain a blank;
step four, sintering: and (3) carrying out microwave sintering on the blank obtained in the step (III) by using a microwave sintering furnace, vacuumizing and then introducing argon to avoid serious oxidation of the material before sintering, wherein the microwave sintering temperature is 1050 ℃, the microwave sintering time is 10min, and obtaining the TC4 titanium alloy after sintering.
Through detection, the density of the TC4 titanium alloy prepared in the comparative example is 95%, the tensile strength is 908MPa, and the elongation after fracture is 7%.
As can be seen from the comparison of example 1 and comparative example 1, the strength was lowered without adding silicon carbide powder in comparative example 1.
Example 2
The embodiment comprises the following steps:
step one, selecting materials: selecting (alpha+beta) TC4 titanium alloy with the grain diameter of 15-53 mu m as a matrix material, and selecting silicon carbide powder with the grain diameter of 40nm as a precursor material of the reinforcement;
step two, mixing powder: placing TC4 titanium alloy powder and silicon carbide powder selected in the first step into a ball mill for ball milling and uniformly mixing to obtain mixed powder; the mass content of the silicon carbide powder in the mixed powder is 1.2%, the rotation speed of ball milling and mixing is 180rpm, the ball-material ratio is 5:1, and the ball milling time is 7 hours;
step three, molding: filling the mixed powder obtained in the second step into a die by using cold isostatic pressing equipment to be pressed and molded, wherein the pressure is 400MPa, so as to obtain a blank;
step four, sintering: and (3) carrying out microwave sintering on the blank obtained in the step (III) by using a microwave sintering furnace, vacuumizing and then introducing argon to avoid serious oxidation of the material before sintering, wherein the microwave sintering temperature is 1050 ℃, the microwave sintering time is 10min, and the high-strength TC4 titanium alloy composite material is obtained after sintering.
Through detection, the density of the high-strength plastic TC4 titanium alloy composite material prepared by the embodiment is 97%, the tensile strength is 1350MPa, and the elongation after fracture is 6%.
Example 3
The embodiment comprises the following steps:
step one, selecting materials: selecting (alpha+beta) TC4 titanium alloy with the grain diameter of 15-53 mu m as a matrix material, and selecting silicon carbide powder with the grain diameter of 40nm as a precursor material of the reinforcement;
step two, mixing powder: placing TC4 titanium alloy powder and silicon carbide powder selected in the first step into a ball mill for ball milling and uniformly mixing to obtain mixed powder; the mass content of the silicon carbide powder in the mixed powder is 0.6%, the rotation speed of ball milling and mixing is 250rpm, the ball-material ratio is 5:1, and the ball milling time is 7h;
step three, molding: filling the mixed powder obtained in the second step into a die by using cold isostatic pressing equipment to be pressed and molded, wherein the pressure is 400MPa, so as to obtain a blank;
step four, sintering: and (3) carrying out microwave sintering on the blank obtained in the step (III) by using a microwave sintering furnace, vacuumizing and then introducing argon to avoid serious oxidation of the material before sintering, wherein the microwave sintering temperature is 1050 ℃, the microwave sintering time is 10min, and the high-strength TC4 titanium alloy composite material is obtained after sintering.
Through detection, the high-strength plastic TC4 titanium alloy composite material prepared by the embodiment has the density of 97%, the tensile strength of 1201MPa and the elongation after fracture of 10%.
Example 4
The embodiment comprises the following steps:
step one, selecting materials: selecting (alpha+beta) TC4 titanium alloy with the grain diameter of 15-53 mu m as a matrix material, and selecting silicon carbide powder with the grain diameter of 40nm as a precursor material of the reinforcement;
step two, mixing powder: placing TC4 titanium alloy powder and silicon carbide powder selected in the first step into a ball mill for ball milling and uniformly mixing to obtain mixed powder; the mass content of the silicon carbide powder in the mixed powder is 1.0%, the rotation speed of ball milling and mixing is 200rpm, the ball-material ratio is 5:1, and the ball milling time is 7h;
step three, molding: filling the mixed powder obtained in the second step into a die by using cold isostatic pressing equipment to be pressed and molded, wherein the pressure is 400MPa, so as to obtain a blank;
step four, sintering: and (3) carrying out microwave sintering on the blank obtained in the step (III) by using a microwave sintering furnace, and vacuumizing and then introducing argon before sintering to avoid serious oxidation of the material. The temperature of microwave sintering is 950 ℃ and the time is 10min, and the high-strength plastic TC4 titanium alloy composite material is obtained after sintering.
Through detection, the density of the high-strength plastic TC4 titanium alloy composite material prepared by the embodiment is 95%, the tensile strength is 1150MPa, and the elongation after fracture is 13%.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the present invention. Any simple modification, variation and equivalent variation of the above embodiments according to the technical substance of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (6)
1. The method for preparing the high-strength plastic TC4 titanium alloy composite material by microwave sintering is characterized by comprising the following steps of:
step one, selecting materials: selecting (alpha+beta) TC4 titanium alloy powder as a matrix material and nano silicon carbide powder as a precursor material of the reinforcement;
step two, mixing powder: placing TC4 titanium alloy powder and silicon carbide powder selected in the first step into a ball mill for ball milling and uniformly mixing to obtain mixed powder;
step three, molding: pressing and forming the mixed powder obtained in the second step by using cold isostatic pressing equipment to obtain a blank;
step four, sintering: carrying out microwave sintering on the blank obtained in the step three by utilizing a microwave sintering furnace to obtain a high-strength plastic TC4 titanium alloy composite material; the density of the high-strength TC4 titanium alloy composite material reaches more than 95%, the tensile strength is 1150-1350 MPa, and the elongation after fracture is 6-14%.
2. The method for preparing a high-strength TC4 titanium alloy composite material by microwave sintering according to claim 1, wherein the particle size of the TC4 titanium alloy powder in the first step is 15-53 μm, and the particle size of the silicon carbide powder is 40nm.
3. The method for preparing the high-strength TC4 titanium alloy composite material by microwave sintering according to claim 1, wherein the mass content of silicon carbide powder in the mixed powder in the second step is 0.6-1.2%.
4. The method for preparing the high-strength and high-plasticity TC4 titanium alloy composite material by microwave sintering according to claim 1, wherein the rotating speed of ball milling and mixing in the second step is 180 rpm-250 rpm.
5. The method for preparing a high-strength TC4 titanium alloy composite material by microwave sintering according to claim 1, wherein in the third step, the pressing and forming are cold isostatic pressing.
6. The method for preparing the high-strength TC4 titanium alloy composite material by microwave sintering according to claim 1, wherein the temperature of the microwave sintering in the fourth step is 850-1050 ℃, and the microwave sintering is performed in an argon atmosphere.
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