CN105522152A - 3D printing method of rare earth and titanium alloy material - Google Patents
3D printing method of rare earth and titanium alloy material Download PDFInfo
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- CN105522152A CN105522152A CN201610033848.3A CN201610033848A CN105522152A CN 105522152 A CN105522152 A CN 105522152A CN 201610033848 A CN201610033848 A CN 201610033848A CN 105522152 A CN105522152 A CN 105522152A
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- 238000000034 method Methods 0.000 title claims abstract description 52
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 38
- 239000000956 alloy Substances 0.000 title claims abstract description 28
- 238000010146 3D printing Methods 0.000 title claims abstract description 20
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 14
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 52
- 238000000137 annealing Methods 0.000 claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 12
- 229910052691 Erbium Inorganic materials 0.000 claims abstract description 9
- 229910052777 Praseodymium Inorganic materials 0.000 claims abstract description 9
- 238000005245 sintering Methods 0.000 claims abstract description 8
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 16
- 238000007493 shaping process Methods 0.000 claims description 13
- 238000000498 ball milling Methods 0.000 claims description 12
- 229910052593 corundum Inorganic materials 0.000 claims description 12
- 239000010431 corundum Substances 0.000 claims description 12
- 239000011812 mixed powder Substances 0.000 claims description 8
- 239000000047 product Substances 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 239000010936 titanium Substances 0.000 claims description 7
- 229910052779 Neodymium Inorganic materials 0.000 claims description 6
- 239000012300 argon atmosphere Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 238000007648 laser printing Methods 0.000 claims description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 6
- 238000001291 vacuum drying Methods 0.000 claims description 6
- 229910052720 vanadium Inorganic materials 0.000 claims description 6
- 229910052727 yttrium Inorganic materials 0.000 claims description 6
- 229910052726 zirconium Inorganic materials 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 4
- 238000000713 high-energy ball milling Methods 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 238000012805 post-processing Methods 0.000 claims description 4
- 239000011265 semifinished product Substances 0.000 claims description 4
- 230000003746 surface roughness Effects 0.000 claims description 4
- 238000005275 alloying Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 3
- 238000005551 mechanical alloying Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- 238000000265 homogenisation Methods 0.000 abstract 1
- 238000005498 polishing Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 101000911772 Homo sapiens Hsc70-interacting protein Proteins 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000003519 biomedical and dental material Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000004053 dental implant Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 210000000629 knee joint Anatomy 0.000 description 1
- 239000012567 medical material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 229910052719 titanium Inorganic materials 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
- 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
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
-
- 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
- B22F3/10—Sintering only
-
- 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
- B22F3/24—After-treatment of workpieces or articles
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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
-
- 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
- C22C1/045—Alloys based on refractory metals
- C22C1/0458—Alloys based on titanium, zirconium or hafnium
-
- 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
-
- 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
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/247—Removing material: carving, cleaning, grinding, hobbing, honing, lapping, polishing, milling, shaving, skiving, turning the surface
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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
- 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
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
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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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- 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
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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
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention provides a 3D printing method of a rare earth and titanium alloy material. The 3D printing method comprises the following steps of: (1), powder preparation, wherein the powder comprises Pr and Er; (2), laser 3D printing molding; (3), heating and roasting; (4), triple annealing treatment; and (5), electrochemical polishing. Through reasonable component design, sintering and alloying homogenization, alloy powder is obtained by adopting mechanical alloying, and the prepared alloy powder is homogeneous and is great in compatibility. Through specific heat treatment cooperation, titanium alloy has high strength, high elastic modulus, great elongation rate and great fracture toughness, and as a result, the finished product has high performance. Through the parameter limitation and the specific alloy component cooperation of the specific preparing method, the performance stability is higher than 90%, and the titanium alloy, after having ideal performance, can be more suitable for medical titanium alloy materials.
Description
Technical field
The present invention relates to a kind of method that 3D prints rare earth titanium alloy material.
Background technology
Bio-medical material refers to for the purpose of medical treatment, for diagnosing, treating, repair or replace human tissue organ or promote the material of its function.Macromolecular material, metal material, nonmetallic materials and composite is mainly comprised for the manufacture of various joint prosthesis and artificial bone medical material in orthopaedics.In view of metal material has higher intensity, toughness and excellent processing characteristics, artificial knee joint, femoral joint, dental implant, root of the tooth and artificial tooth metallic support etc. can be used as, thus obtain in surgical implantation and apply widely.
3D printing technique designs a model as source with Computerized three-dimensional, discrete and the numerical control molding system by software hierarchy, utilizing the mode such as high energy laser beam, electron beam successively to be piled up by the special materials such as metal wire, metal dust, ceramic powders or plastic cell tissue, the final superposition of bonding is shaping produces entity products.This also determines the difference of its printed material and application direction, can produce the development field that some are vertical.
Existing bioengineering can print cranium in skull, tooth bone, repair human hip, backbone, cell, organ soft tissue etc., and aerospace field also adopts the printing of 3D printing technique to appear fortune 20, destroy the undercarriage etc. of the primary load bearing part of 15.
But because 3D prints to the particularity of material requirements and medical, aerospace field to the high demand of material, existing material also meets above-mentioned all requirements completely.
Laser gain material manufactures, i.e. laser 3D printing technique is the mode by laser melting coating, realizes piling up layer by layer, and piles up path by Digital Control, thus a direct step produces the technology of complex component.Go, compared with the technology such as material manufacture, forging and stamping, casting, to there is following advantage: (1) raw material availability is high with tradition; (2) die cost is saved; (3) manufacturing cycle is designed short; (4) without the need to or only need a small amount of following process; (5) complex component that conventional art cannot realize can be prepared.Therefore, laser 3D printing technique worldwide develops rapidly, is subject to the great attention of government, national defence, enterprise, institute.
But, adopt laser 3D to print because every layer all can occur repeatedly to melt when preparing titanium alloy and component, and cooling velocity is exceedingly fast, so metallographic structure is thick, uneven and in needle-like, combination property is not high; Although its mechanical property can be improved to a certain extent by follow-up middle process annealing heat treatment, owing to easily forming thick tissue in heat treatment process, thus reduce mechanical property.In addition, the subsequent heat treatment process window printing titanium product due to laser 3D is narrower, and its mechanical property is improved limited, so have the following disadvantages: (1) strength level and heat resisting temperature are not high; (2) metallographic structure is thick and uneven; (3) in subsequent heat treatment modifying process, metallographic structure is grown up; (4) subsequent heat treatment technological parameter range of choices is narrower, and mechanical property is improved limited; (5) due to the acicular constituent that metallographic structure is thick, the plasticity level of alloy and component is low.
Summary of the invention
A kind of 3D of the present invention prints the method for rare earth titanium alloy material, by the optimization of component, and the optimization of improvement prepared by powder and heat treatment process.
3D of the present invention prints the method for rare earth titanium alloy material, comprises the following steps:
(1) powder preparation: mixed powder: elemental powders and compound powder powder stock are mixed in mixed powder machine, the powder after mixing is carried out high-energy ball milling; Powder after ball milling is implemented pressurized, heated operation, temperature is 180-195 DEG C, and pressure is 950-1050MPa, and the dwell time is 3-10 minute; Sinter in vacuum drying oven, sintering temperature is 850-1250 DEG C, and the sintered heat insulating time is 2-10h; Obtain titanium alloy block, titanium alloy block is placed in corundum ceramic ball grinder, is first evacuated to 1 × 10
-2-9 × 10
-2pa, then under 300-450r/min rotating speed, employing granularity is the corundum ball ball milling 24-48 hour of 1-8mm; Finally with filtering out the alloy powder that granularity is 15-36 μm, using it as laser 3D printing powder body material;
(2) laser 3D printing shaping, laser power 200-250W, sweep speed is 1200-1400mm/s, prints under vacuum or argon atmosphere, by blank Ultrasonic Cleaning 10 ~ 15mins shaping for laser printing, 120 DEG C of oven dry after cleaning;
(3) by blank heating roasting, heating-up temperature is 700-800 DEG C, and temperature retention time is 1 ~ 1.5h, and vacuum is 1.0 × 10
-3~ 10
-4pa;
(4) triple annealing process, carries out annealing in process first by blank, and annealing temperature is 650-700 DEG C, insulation 2-4 hour, air cooling; Carry out double annealing process subsequently, annealing temperature is 445-480 DEG C, insulation 5-8 hour, air cooling; Finally carry out three annealing in process, annealing temperature is 290-360 DEG C, insulation 10-14 hour, air cooling;
(5) adopt electrochemical polish to carry out post processing to the described semi-finished product that step (3) obtains, obtain surface roughness between the finished product of 60 μm ~ 70 μm, described elemental powders comprises Pr and Er.
Further, the composition of described titanium alloy powder comprises following component (mass percent): Ni:11-18%, Al:7.3-8.9%, Cu:0.56-0.9%, Zr:1.2-1.7%, Mo:0.2-0.4%, Fe:1-2.8%, Ag:0.1-0.5%, Nd:0.6-1%, V:0.5-0.8%, Pr:1-3%, Er:0.5-1.5%, Y:1-2%, CeO
2: 1-3%, LaB
6: 0.1-3.3%, surplus is Ti.
Further, the composition stating titanium alloy powder comprises following component (mass percent): Ni:15.6%, Al:7.6%, Cu:0.88%, Zr:1.3%, Mo:0.26%, Fe:1.92%, Ag:0.35%, Nd:0.78%, V:0.66%, Pr:1.6%, Er:0.9%, Y:1.4%, CeO
2: 1.23%, LaB
6: 1.2%, surplus is Ti.
Further, the powder after ball milling is implemented pressurized, heated operation, temperature is 185 DEG C, and pressure is 1025MPa, and the dwell time is 5 minutes; Sinter in vacuum drying oven, sintering temperature is 900 DEG C, and the sintered heat insulating time is 5h; Obtain titanium alloy block, titanium alloy block is placed in corundum ceramic ball grinder, is first evacuated to 3 × 10
-2pa, then under 360r/min rotating speed, adopts granularity to be the corundum ball ball milling 36 hours of 2mm; Finally with filtering out the alloy powder that granularity is 20 μm, using it as laser 3D printing powder body material;
Further, laser 3D printing shaping, laser power 240W, sweep speed is 1300mm/s, prints under vacuum or argon atmosphere, by blank Ultrasonic Cleaning 12mins shaping for laser printing, 120 DEG C of oven dry after cleaning.
Further, triple annealing process, carries out annealing in process first by blank, and annealing temperature is 660 DEG C, is incubated 4 hours, air cooling; Carry out double annealing process subsequently, annealing temperature is 450 DEG C, is incubated 6 hours, air cooling; Finally carry out three annealing in process, annealing temperature is 300 DEG C, is incubated 12 hours, air cooling.
By rational Composition Design, even by sintering alloying again, mechanical alloying is adopted to obtain alloy powder, prepare uniform and compatible good alloy powder, cross concrete heat treatment to coordinate, make titanium alloy have high strength, high elastic modulus, the percentage elongation of becoming reconciled and fracture toughness, finally cause end properties high; By the restriction of above-mentioned concrete preparation method's parameter and coordinating of concrete alloying component, make stability reach more than 90%, can be more applicable in medical titanium alloy material after having possessed ideal performance.
Detailed description of the invention
Embodiment 1
3D prints the method for rare earth titanium alloy material, comprises the following steps:
(1) powder preparation: the composition of described titanium alloy powder comprises following component (mass percent): Ni:12.3%, Al:7.8%, Cu:0.82%, Zr:1.35%, Mo:0.22%, Fe:1.6%, Ag:0.35%, Nd:0.85%, V:0.56%, Pr:1.1%, Er:1.2%, Y:1.5%, CeO
2: 1.8%, LaB
6: 1.3%, surplus is Ti, and it is prepared from by following methods, mixed powder: above-mentioned elemental powders and compound powder are mixed in mixed powder machine, the powder after mixing is carried out high-energy ball milling; Powder after ball milling is implemented pressurized, heated operation, temperature is 190 DEG C, and pressure is 980MPa, and the dwell time is 5 minutes; Sinter in vacuum drying oven, sintering temperature is 890 DEG C, and the sintered heat insulating time is 4h; Obtain titanium alloy block, titanium alloy block is placed in corundum ceramic ball grinder, is first evacuated to 1 × 10
-2pa, then under 330r/min rotating speed, adopts granularity to be the corundum ball ball milling 28 hours of 3mm; Finally with filtering out the alloy powder that granularity is 20 μm, using it as laser 3D printing powder body material;
(2) laser 3D printing shaping, laser power 220W, sweep speed is 1300mm/s, prints under vacuum or argon atmosphere, by blank Ultrasonic Cleaning 12mins shaping for laser printing, 120 DEG C of oven dry after cleaning;
(3) by blank heating roasting, heating-up temperature is 780 DEG C, and temperature retention time is 1h, and vacuum is 10
-4pa;
(4) triple annealing process, carries out annealing in process first by blank, and annealing temperature is 680 DEG C, is incubated 3 hours, air cooling; Carry out double annealing process subsequently, annealing temperature is 460 DEG C, is incubated 6 hours, air cooling; Finally carry out three annealing in process, annealing temperature is 298 DEG C, is incubated 13 hours, air cooling;
(5) adopt electrochemical polish to carry out post processing to the described semi-finished product that step (3) obtains, obtain the finished product that surface roughness is 65 μm;
Its room temperature compression yield strength of described finished product and breaking strain 1225MPa and 45.2% respectively, its elastic modelling quantity is 44.1GPa.
Embodiment 2
3D prints the method for rare earth titanium alloy material, comprises the following steps:
(1) powder preparation: the composition of described titanium alloy powder comprises following component (mass percent): Ni:13%, Al:7.7%, Cu:0.76%, Zr:1.35%, Mo:0.33%, Fe:1.9%, Ag:0.12%, Nd:0.77%, V:0.68%, Pr:1.8%, Er:0.75%, Y:1.3%, CeO
2: 1.6%, LaB
6: 1.6%, surplus is Ti, and it is prepared from by following methods, mixed powder: above-mentioned elemental powders and compound powder are mixed in mixed powder machine, the powder after mixing is carried out high-energy ball milling; Powder after ball milling is implemented pressurized, heated operation, temperature is 185 DEG C, and pressure is 1030MPa, and the dwell time is 6 minutes; Sinter in vacuum drying oven, sintering temperature is 980 DEG C, and the sintered heat insulating time is 5h; Obtain titanium alloy block, titanium alloy block is placed in corundum ceramic ball grinder, is first evacuated to 1 × 10
-2pa, then under 360r/min rotating speed, adopts granularity to be the corundum ball ball milling 36 hours of 5mm; Finally with filtering out the alloy powder that granularity is 18 μm, using it as laser 3D printing powder body material;
(2) laser 3D printing shaping, laser power 250W, sweep speed is 1300mm/s, prints under vacuum or argon atmosphere, by blank Ultrasonic Cleaning 13mins shaping for laser printing, 120 DEG C of oven dry after cleaning;
(3) by blank heating roasting, heating-up temperature is 760 DEG C, and temperature retention time is 1h, and vacuum is 10
-4pa;
(4) triple annealing process, carries out annealing in process first by blank, and annealing temperature is 660 DEG C, is incubated 3 hours, air cooling; Carry out double annealing process subsequently, annealing temperature is 470 DEG C, is incubated 6 hours, air cooling; Finally carry out three annealing in process, annealing temperature is 330 DEG C, is incubated 11 hours, air cooling;
(5) adopt electrochemical polish to carry out post processing to the described semi-finished product that step (3) obtains, obtain the finished product that surface roughness is 65 μm;
The room temperature compression yield strength of described finished product and breaking strain are respectively 1231MPa and 48.5%, and elastic modelling quantity is 37GPa.
Claims (6)
1. 3D prints a method for rare earth titanium alloy material, it is characterized in that: comprise the following steps:
(1) powder preparation: mixed powder: elemental powders and compound powder powder stock are mixed in mixed powder machine, the powder after mixing is carried out high-energy ball milling; Powder after ball milling is implemented pressurized, heated operation, temperature is 180-195 DEG C, and pressure is 950-1050MPa, and the dwell time is 3-10 minute; Sinter in vacuum drying oven, sintering temperature is 850-1250 DEG C, and the sintered heat insulating time is 2-10h; Obtain titanium alloy block, titanium alloy block is placed in corundum ceramic ball grinder, is first evacuated to 1 × 10
-2-9 × 10
-2pa, then under 300-450r/min rotating speed, employing granularity is the corundum ball ball milling 24-48 hour of 1-8mm; Finally with filtering out the alloy powder that granularity is 15-36 μm, using it as laser 3D printing powder body material, described elemental powders comprises Pr and Er;
Laser 3D printing shaping, laser power 200-250W, sweep speed is 1200-1400mm/s, prints under vacuum or argon atmosphere, by blank Ultrasonic Cleaning 10 ~ 15mins shaping for laser printing, 120 DEG C of oven dry after cleaning;
(3) by blank heating roasting, heating-up temperature is 700-800 DEG C, and temperature retention time is 1 ~ 1.5h, and vacuum is 1.0 × 10
-3~ 10
-4pa;
(4) triple annealing process, carries out annealing in process first by blank, and annealing temperature is 650-700 DEG C, insulation 2-4 hour, air cooling; Carry out double annealing process subsequently, annealing temperature is 445-480 DEG C, insulation 5-8 hour, air cooling; Finally carry out three annealing in process, annealing temperature is 290-360 DEG C, insulation 10-14 hour, air cooling;
(5) adopt electrochemical polish to carry out post processing to the described semi-finished product that step (3) obtains, obtain surface roughness between the finished product of 60 μm ~ 70 μm.
2. 3D as claimed in claim 1 prints the method for rare earth titanium alloy material, it is characterized in that: the composition of described titanium alloy powder comprises following component (mass percent): Ni:11-18%, Al:7.3-8.9%, Cu:0.56-0.9%, Zr:1.2-1.7%, Mo:0.2-0.4%, Fe:1-2.8%, Ag:0.1-0.5%, Nd:0.6-1%, V:0.5-0.8%, Pr:1-3%, Er:0.5-1.5%, Y:1-2%, CeO
2: 1-3%, LaB
6: 0.1-3.3%, surplus is Ti.
3. the 3D as described in claim 1-2 prints the method for rare earth titanium alloy material, it is characterized in that: the composition stating titanium alloy powder comprises following component (mass percent): Ni:15.6%, Al:7.6%, Cu:0.88%, Zr:1.3%, Mo:0.26%, Fe:1.92%, Ag:0.35%, Nd:0.78%, V:0.66%, Pr:1.6%, Er:0.9%, Y:1.4%, CeO
2: 1.23%, LaB
6: 1.2%, surplus is Ti.
4. the 3D as described in claim 1-3 prints the method for rare earth titanium alloy material, it is characterized in that: the powder after ball milling is implemented pressurized, heated operation, temperature is 185 DEG C, and pressure is 1025MPa, and the dwell time is 5 minutes; Sinter in vacuum drying oven, sintering temperature is 900 DEG C, and the sintered heat insulating time is 5h; Obtain titanium alloy block, titanium alloy block is placed in corundum ceramic ball grinder, is first evacuated to 3 × 10
-2pa, then under 360r/min rotating speed, adopts granularity to be the corundum ball ball milling 36 hours of 2mm; Finally with filtering out the alloy powder that granularity is 20 μm, using it as laser 3D printing powder body material.
5. the 3D as described in claim 1-4 prints the method for rare earth titanium alloy material; it is characterized in that: laser 3D printing shaping; laser power 240W; sweep speed is 1300mm/s; print under vacuum or argon atmosphere; by blank Ultrasonic Cleaning 12mins shaping for laser printing, 120 DEG C of oven dry after cleaning.
6. the 3D as described in claim 1-5 prints the method for rare earth titanium alloy material, and it is characterized in that: triple annealing process, blank is carried out annealing in process first, annealing temperature is 660 DEG C, is incubated 4 hours, air cooling; Carry out double annealing process subsequently, annealing temperature is 450 DEG C, is incubated 6 hours, air cooling; Finally carry out three annealing in process, annealing temperature is 300 DEG C, is incubated 12 hours, air cooling.
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| CN110499438A (en) * | 2019-09-30 | 2019-11-26 | 广东省航空航天装备技术研究所 | Material compositions, titanium alloy product and preparation method thereof |
| CN110735065A (en) * | 2019-11-01 | 2020-01-31 | 广东省航空航天装备技术研究所 | composite material composition, titanium alloy product and preparation method thereof |
| CN111360276A (en) * | 2020-03-24 | 2020-07-03 | 上海材料研究所 | Method for modifying TC4 high-oxygen powder to be used for 3D printing raw material |
| CN113025843A (en) * | 2021-02-23 | 2021-06-25 | 大连理工大学 | Ti-Al-V-Zr high-temperature-resistant high-strength and high-toughness titanium alloy with good additive manufacturing performance and application thereof |
| CN114939656A (en) * | 2022-05-31 | 2022-08-26 | 南昌航空大学 | Method for improving performance of laser additive manufacturing alloy steel by adding rare earth oxide |
| US11486025B2 (en) | 2017-10-19 | 2022-11-01 | The Boeing Company | Titanium-based alloy and method for manufacturing a titanium-based alloy component by an additive manufacturing process |
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| CN113025843A (en) * | 2021-02-23 | 2021-06-25 | 大连理工大学 | Ti-Al-V-Zr high-temperature-resistant high-strength and high-toughness titanium alloy with good additive manufacturing performance and application thereof |
| CN114939656A (en) * | 2022-05-31 | 2022-08-26 | 南昌航空大学 | Method for improving performance of laser additive manufacturing alloy steel by adding rare earth oxide |
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