CN114762895A - Preparation method of rare earth oxide reinforced titanium-based composite material - Google Patents
Preparation method of rare earth oxide reinforced titanium-based composite material Download PDFInfo
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- 239000010936 titanium Substances 0.000 title claims abstract description 53
- 229910001404 rare earth metal oxide Inorganic materials 0.000 title claims abstract description 49
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 48
- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 49
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 46
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000000498 ball milling Methods 0.000 claims abstract description 21
- 238000010146 3D printing Methods 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 16
- 229910052786 argon Inorganic materials 0.000 claims abstract description 15
- 238000002844 melting Methods 0.000 claims abstract description 15
- 230000008018 melting Effects 0.000 claims abstract description 15
- 239000011812 mixed powder Substances 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 239000000654 additive Substances 0.000 claims abstract description 11
- 230000000996 additive effect Effects 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical group O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 9
- 238000012216 screening Methods 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 229910052720 vanadium Inorganic materials 0.000 claims description 5
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 4
- PLDDOISOJJCEMH-UHFFFAOYSA-N neodymium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Nd+3].[Nd+3] PLDDOISOJJCEMH-UHFFFAOYSA-N 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005275 alloying Methods 0.000 claims description 2
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910001938 gadolinium oxide Inorganic materials 0.000 claims description 2
- 229940075613 gadolinium oxide Drugs 0.000 claims description 2
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 abstract description 8
- 238000007254 oxidation reaction Methods 0.000 abstract description 8
- 239000000956 alloy Substances 0.000 abstract description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 6
- 239000001301 oxygen Substances 0.000 abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 abstract description 6
- 239000011159 matrix material Substances 0.000 abstract description 4
- 230000007547 defect Effects 0.000 description 5
- 229910052761 rare earth metal Inorganic materials 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000012798 spherical particle Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- -1 rare earth salt Chemical class 0.000 description 1
- 238000000110 selective laser sintering Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- 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
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/14—Making metallic powder or suspensions thereof using physical processes using electric discharge
-
- 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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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- 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
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
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- 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
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- 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
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
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- Manufacturing & Machinery (AREA)
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Abstract
A preparation method of rare earth oxide reinforced titanium matrix composite relates to a preparation method of titanium matrix composite. The titanium-based alloy material aims to solve the technical problem that the oxidation resistance of the existing titanium-based alloy material for additive manufacturing is poor. The preparation method of the rare earth oxide reinforced titanium-based composite material comprises the following steps: mixing titanium alloy powder with the particle size of 20-75 microns and rare earth oxide, and then ball-milling to obtain mixed powder; and then conveying the mixed powder to thermal plasma spheroidizing equipment, and carrying out spheroidizing treatment by taking high-purity argon as central gas to obtain the rare earth oxide reinforced titanium-based composite material. The oxygen content of the composite material is 940-1050 ppm. And placing the rare earth oxide reinforced titanium-based composite material into selective laser melting 3D printing equipment for selective laser melting 3D printing and forming to obtain the titanium alloy component. The rare earth oxide reinforced titanium-based composite material can be used in the field of additive manufacturing.
Description
Technical Field
The invention relates to a preparation method of a titanium-based composite material.
Background
Titanium metal is used as a strategic metal material, has the characteristics of light weight, high strength, corrosion resistance and the like, is a necessary material for aircraft manufacturing and aerospace industry, and is also a key material for additive manufacturing. At present, in the aspect of preparing titanium and titanium alloy near net-shaped products with complex shapes, uniform structures and high performance, the most application is the powder metallurgy method, but the powder metallurgy process has the defects of low product density, poor comprehensive performance and the like, and the use requirement of high-precision space structure materials is difficult to meet.
The selective laser melting technology is evolved and upgraded from a selective laser sintering technology, and belongs to one of metal rapid prototyping technologies. For laser rapid prototyping, there are strict requirements for the metal powder in the consumable. The metal powder for additive manufacturing needs to have good plasticity, and needs to meet the requirements of fine powder particle size, narrow particle size distribution, high sphericity, good fluidity, high apparent density and the like. However, the existing high-performance titanium-based alloy material for additive manufacturing is easily oxidized in the preparation and storage processes, so that the oxygen content of the material is increased, and the performance of the additive manufacturing component is influenced.
Disclosure of Invention
The invention provides a preparation method of a rare earth oxide reinforced titanium-based composite material, aiming at solving the technical problem of poor oxidation resistance of the existing titanium-based alloy material for additive manufacturing.
The preparation method of the rare earth oxide reinforced titanium-based composite material comprises the following steps:
firstly, screening titanium alloy powder to obtain titanium alloy powder with the particle size of 20-75 micrometers;
secondly, mixing the sieved titanium alloy powder with rare earth oxide, putting the mixture into a planetary ball mill, and performing ball milling and powder mixing under the protection of argon gas to obtain mixed powder; wherein, the ball milling is carried out by taking steel balls with the diameter of 6-10 mm as the ball milling, the ball-material ratio is (13-16) to 1, the ball milling and powder mixing time is 2-10 hours, and the mass of the rare earth oxide accounts for 0.1-2% of that of the titanium alloy powder;
And thirdly, conveying the mixed powder obtained in the second step into thermal plasma spheroidizing equipment, and spheroidizing under the conditions that the input power of plasma is 16-32 kW and the powder conveying speed is 0.5-0.9 kg/h by taking high-purity argon as central gas to obtain the rare earth oxide reinforced titanium-based composite material.
Further, in the titanium alloy in the first step, the alloying elements are, in atomic percent: al: 1.0 to 6.0 at%, Sn: 0 to 4.7 at%, Mo: 0-5.5 at%, V: 0-6.5 at%, Cr: 0-4.5 at%, Fe: 0 to 1.5 at%, Mn: 0 to 2.0 at%, Zr: 0 to 2.0 at%, Si: 0 to 1.5 at%, and the balance Ti.
Further, in the second step, the rare earth oxide is yttrium oxide, lanthanum oxide, neodymium oxide, cerium oxide or gadolinium oxide.
Further, the high purity argon gas described in step three is argon gas having a concentration of greater than 99.999% by mass.
The rare earth oxide reinforced titanium-based composite material prepared by the method is spherical powder and can be used for additive manufacturing.
The method for performing additive manufacturing molding by using the rare earth oxide reinforced titanium-based composite material comprises the following specific steps:
the rare earth oxide reinforced titanium-based composite material is placed into selective laser melting 3D printing equipment, and selective laser melting 3D printing forming is carried out under the conditions that the laser power is 150-190W, the scanning speed is 700-1100 mm/s, the scanning interval is 0.10-0.14 mm, and the powder layer thickness is 0.03-0.06 mm, so that the titanium alloy component is obtained.
According to the invention, the rare earth salt reinforced titanium-based alloy powder is adopted, and the mixed powder is subjected to plasma spheroidization, so that a powder material which has high sphericity, uniform granularity, few defects and good fluidity and is suitable for 3D printing can be obtained.
The spherical rare earth oxide reinforced titanium-based composite material is subjected to selective laser melting 3D printing molding to obtain a titanium alloy member, and the rare earth element has the characteristics of unique electronic structure, extremely strong chemical activity and the like, so that the rare earth has good modification capability on the alloy. The addition of the rare earth elements is beneficial to forming a relatively compact oxide layer to replace a typical multilayer structure formed in the oxidation process of the titanium alloy, so that the oxidation rate of the titanium alloy is effectively reduced, the oxidation resistance of the powder is remarkably improved, and the oxygen content of the rare earth oxide reinforced titanium-based composite material is 940-1050 ppm. The rare earth oxide also has higher melting point and thermal stability, and simultaneously can make the microstructure of the material more uniform, and in addition, the rare earth oxide can block dislocation and grain boundary movement and reduce the average grain size, so that the hardness, tensile strength and density of the titanium matrix can be improved. The rare earth oxide reinforced titanium-based composite material can be used in the field of additive manufacturing.
Drawings
FIG. 1 is an XRD spectrum of a rare earth oxide reinforced titanium matrix composite prepared in example 1.
Detailed Description
The following examples are used to demonstrate the beneficial effects of the present invention.
Example 1: the preparation method of the rare earth oxide reinforced titanium-based composite material of the embodiment comprises the following steps:
firstly, screening titanium alloy powder, and screening out the titanium alloy powder with the particle size of 20-75 micrometers; wherein the titanium alloy comprises the following elements in atomic percentage: al: 6.0 at%, V: 4.5 at%, Fe: 0.3 at%, the balance Ti;
secondly, mixing the sieved titanium alloy powder with rare earth oxide yttrium oxide, putting the mixture into a planetary ball mill, and performing ball milling and powder mixing under the protection of argon gas to obtain mixed powder; the ball milling is carried out by using ball milling materials with the diameter of 6mm and 10mm, the ball-material ratio is 15:1, the ball milling powder mixing time is 10 hours, and the mass of yttrium oxide accounts for 1 percent of the mass of titanium alloy powder;
and thirdly, conveying the mixed powder obtained in the second step into thermal plasma spheroidizing equipment, and spheroidizing under the conditions that the input power of plasma is 19.2kW and the powder conveying speed is 0.6kg/h by taking high-purity argon with the mass percentage concentration of 99.999% as central gas to obtain the rare earth oxide reinforced titanium-based composite material.
The XRD spectrogram of the rare earth oxide reinforced titanium-based composite material prepared by the implementation is shown in figure 1, and as can be seen from figure 1, the composite material contains yttrium oxide besides titanium, and the addition of rare earth elements is favorable for forming a relatively compact oxide layer to replace a typical multilayer structure formed in the oxidation process of titanium alloy, so that the oxidation rate of the titanium alloy is effectively reduced, and the oxidation resistance of the powder is remarkably improved. The oxygen content of the rare earth oxide reinforced titanium-based composite material prepared by the embodiment is 944ppm, and the rare earth oxide reinforced titanium-based composite material is spherical particles with uniform particle size, less defects and good fluidity.
The rare earth oxide reinforced titanium-based composite material prepared in the embodiment is placed into selective laser melting 3D printing equipment, and selective laser melting 3D printing and forming are carried out under the conditions that the laser power is 160W, the scanning speed is 800mm/s, the scanning interval is 0.10mm, and the powder layer thickness is 0.03mm, so that the titanium alloy component is obtained.
The titanium alloy member 3D printed in this example had a tensile strength of 1220.3MPa, a yield strength of 1179.8MPa, and a compactness of 98.5%.
The hardness of the 3D printed titanium alloy member of this example was 215 HV.
Example 2: the preparation method of the rare earth oxide reinforced titanium-based composite material of the embodiment comprises the following steps:
Firstly, screening titanium alloy powder, and screening out the titanium alloy powder with the particle size of 20-75 micrometers; wherein the titanium alloy comprises the following elements in atomic percentage: al: 6.0 at%, V: 4.5 at%, Fe: 0.3 at%, the balance Ti;
secondly, mixing the sieved titanium alloy powder with rare earth oxide yttrium oxide, putting the mixture into a planetary ball mill, and carrying out ball milling and powder mixing under the protection of argon to obtain mixed powder; wherein, the ball milling is carried out by taking steel balls with the diameters of 6mm and 10mm as the ball milling, the ball material ratio is 15:1, the ball milling and powder mixing time is 10 hours, and the mass of yttrium oxide accounts for 1.5 percent of that of the titanium alloy powder;
and thirdly, conveying the mixed powder obtained in the second step into thermal plasma spheroidizing equipment, and spheroidizing under the conditions that the input power of plasma is 24.4kW and the powder conveying speed is 0.6kg/h by taking high-purity argon with the mass percentage concentration of 99.999% as central gas to obtain the rare earth oxide reinforced titanium-based composite material.
The rare earth oxide reinforced titanium-based composite material prepared by the implementation is spherical particles with uniform particle size, less defects and good fluidity, and the oxygen content of the rare earth oxide reinforced titanium-based composite material is 1050 ppm.
The rare earth oxide reinforced titanium-based composite material prepared in the embodiment is placed into selective laser melting 3D printing equipment, and selective laser melting 3D printing and forming are carried out under the conditions that the laser power is 170W, the scanning speed is 900mm/s, the scanning interval is 0.10mm, and the powder layer thickness is 0.03mm, so that the titanium alloy component is obtained.
The tensile strength of the titanium alloy member subjected to 3D printing in the embodiment is 1225.8MPa, the yield strength is 1187.2MPa, and the compactness of the titanium alloy member is 98.9%.
The hardness of the 3D printed titanium alloy member of this example was 217 HV.
Example 3: the preparation method of the rare earth oxide reinforced titanium-based composite material of the embodiment comprises the following steps:
firstly, screening titanium alloy powder, and screening out the titanium alloy powder with the particle size of 20-75 micrometers; wherein the titanium alloy comprises the following elements in atomic percentage: al: 6.0 at%, V: 4.5 at%, Fe: 0.3 at%, the balance Ti;
secondly, mixing the sieved titanium alloy powder with rare earth oxide yttrium oxide, putting the mixture into a planetary ball mill, and carrying out ball milling and powder mixing under the protection of argon to obtain mixed powder; the ball milling is carried out by using ball milling materials with the diameter of 6mm and 10mm, the ball-material ratio is 15:1, the ball milling powder mixing time is 10 hours, and the mass of yttrium oxide accounts for 1 percent of the mass of titanium alloy powder;
and thirdly, conveying the mixed powder obtained in the second step into thermal plasma spheroidizing equipment, and spheroidizing under the conditions that the input power of plasma is 28.3kW and the powder conveying speed is 0.6kg/h by taking high-purity argon with the mass percentage concentration of 99.999% as central gas to obtain the rare earth oxide reinforced titanium-based composite material.
The rare earth oxide reinforced titanium-based composite material prepared by the implementation is spherical particles with uniform particle size, less defects and good fluidity, and the oxygen content of the rare earth oxide reinforced titanium-based composite material is 942 ppm.
The rare earth oxide reinforced titanium-based composite material prepared in the embodiment is placed into selective laser melting 3D printing equipment, and selective laser melting 3D printing and forming are carried out under the conditions that the laser power is 180W, the scanning speed is 1000mm/s, the scanning distance is 0.10mm, and the powder layer thickness is 0.03mm, so that the titanium alloy component is obtained.
The tensile strength of the titanium alloy member subjected to 3D printing in the embodiment is 1233.4MPa, the yield strength is 1200.4MPa, and the compactness of the titanium alloy member is 99.8%.
The hardness of the 3D printed titanium alloy member of this example was 223 HV.
Claims (5)
1. A preparation method of a rare earth oxide reinforced titanium-based composite material is characterized by comprising the following steps:
firstly, screening titanium alloy powder to obtain titanium alloy powder with the particle size of 20-75 micrometers;
secondly, mixing the sieved titanium alloy powder with rare earth oxide, putting the mixture into a planetary ball mill, and carrying out ball milling and powder mixing under the protection of argon to obtain mixed powder; wherein the ball milling is carried out by taking steel balls with the diameter of 6-10 mm as ball milling, the ball-to-material ratio is (13-16): 1, the ball milling and powder mixing time is 2-10 hours, and the mass of the rare earth oxide accounts for 0.1-2% of the mass of the titanium alloy powder;
And thirdly, conveying the mixed powder obtained in the second step into thermal plasma spheroidizing equipment, and spheroidizing under the conditions that the input power of plasma is 16-32 kW and the powder conveying speed is 0.5-0.9 kg/h by taking high-purity argon as central gas to obtain the rare earth oxide reinforced titanium-based composite material.
2. The method of claim 1, wherein the alloying elements in the titanium alloy of step one are in atomic percent: al: 1.0 to 6.0 at%, Sn: 0 to 4.7 at%, Mo: 0-5.5 at%, V: 0-6.5 at%, Cr: 0-4.5 at%, Fe: 0 to 1.5 at%, Mn: 0 to 2.0 at%, Zr: 0 to 2.0 at%, Si: 0 to 1.5 at%, and the balance Ti.
3. The method according to claim 1 or 2, wherein the rare earth oxide is yttrium oxide, lanthanum oxide, neodymium oxide, cerium oxide or gadolinium oxide.
4. The method of claim 1 or 2, wherein the high purity argon gas in step three is argon gas with a concentration of more than 99.999% by mass.
5. The method for additive manufacturing and forming of the rare earth oxide reinforced titanium-based composite material prepared by the method of claim 1 is characterized by comprising the following steps:
the rare earth oxide reinforced titanium-based composite material is placed into selective laser melting 3D printing equipment, and selective laser melting 3D printing forming is carried out under the conditions that the laser power is 150-190W, the scanning speed is 700-1100 mm/s, the scanning interval is 0.10-0.14 mm, and the powder layer thickness is 0.03-0.06 mm, so that the titanium alloy component is obtained.
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| CN113604695A (en) * | 2021-08-10 | 2021-11-05 | 内蒙古科技大学 | Method for optimizing additive manufacturing of titanium alloy structure by adding rare earth alloy |
| KR102370832B1 (en) * | 2020-10-26 | 2022-03-07 | 한국생산기술연구원 | Nanoparticle dispersion strengthened composite powder and manufacturing method thereof |
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- 2022-05-12 CN CN202210516497.7A patent/CN114762895A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105603255A (en) * | 2016-01-19 | 2016-05-25 | 王岩 | Medical titanium alloy material prepared by means of 3D (three-dimensional) printing |
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