CN105014073A - TC4 titanium alloy laser selective melting material additive manufacturing and heat treatment method - Google Patents
TC4 titanium alloy laser selective melting material additive manufacturing and heat treatment method Download PDFInfo
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Abstract
Disclosed is a TC4 titanium alloy laser selective melting material additive manufacturing and heat treatment method. According to parameters of a TC4 titanium alloy laser selective melting process, laser power ranges from 300 W to 325 W, the spot diameter ranges from 0.12 mm to 0.14 mm, scanning speed ranges from 500 mm/s to 1,200 m/s, and the thickness of a powder laying layer ranges from 0.03 mm to 0.04 mm. A dual annealing process is adopted in heat treatment of a forming component, a TC4 titanium alloy component is firstly put in a vacuum heat treatment furnace with the temperature of 780 DEG C to 820 DEG C, and temperature is reduced to room temperature in an air cooled manner after heat preservation is carried out for 1.5-2 h; and then the TC4 titanium alloy component is put in the vacuum heat treatment furnace with the temperature of 530 DEG C to 550 DEG C again, and temperature is reduced to room temperature in an air cooled manner again after heat preservation is carried out for 2-3 h. The strength of the TC4 titanium alloy component treated through the process exceeds 1,000 MPa, meanwhile, ductility is not smaller than 10%, and the TC4 titanium alloy component can meet the requirements of aerospace products for the strength and plasticity of TC4 titanium alloy key bearing structural components.
Description
Technical field
The present invention relates to the fusing of a kind of TC4 titanium alloy selective laser and increase material manufacture and heat treatment method, obtain the TC4 titanium alloy structure part with excellent mechanical property.
Background technology
TC4 titanium alloy is a kind of type alpha+beta diphasic titanium alloy of moderate strength, the β phase stable element V of the α phase stable element Al and 3.5% ~ 4.5% containing 5.5% ~ 6.8%.This alloy has excellent combination property, is employed in Aero-Space as important materials, increasingly expands in recent years in military industry field application.
The fusing of TC4 titanium alloy member selective laser increases material manufacturing technology, is successively melt TC4 titanium alloy powder by high energy laser beam, and then realizes the manufacture of TC4 titanium alloy member complicated arbitrarily.What this technology can also overcome tradition processing simultaneously subtracts material manufacture to the raw-material a large amount of waste of TC4 titanium alloy, has rapid shaping, crystal grain thinning, many excellent characteristics such as structural strength is high.But because laser gain material manufacture process has the feature such as fast hot rapid cooling, high gradient Re-Li-stream multi-scenarios method, cause there is higher internal stress in TC4 titanium alloy member.Thus the mechanical property of TC4 titanium alloy member is shown intensity is high, plasticity is poor feature.
Summary of the invention
Technical problem to be solved by this invention is: for meeting the requirements at the higher level of Aerospace Products to TC4 titanium alloy member intensity and plasticity, namely make the TC4 titanium alloy complex member adopting selective laser fusing increasing material manufacturing technology to prepare after the process of double annealing Technology for Heating Processing, its intensity ensures that percentage elongation is not less than 10% under the condition reaching 1000MPa.
For realizing above-mentioned object, technical scheme of the present invention is: the fusing of a kind of TC4 titanium alloy selective laser increases material manufacture and heat treatment method, comprises TC4 titanium alloy member selective laser fusing manufacturing process and follow-up double annealing Technology for Heating Processing.
The present invention is achieved by the following technical solutions:
The fusing of a kind of TC4 titanium alloy selective laser increases material manufacture and heat treatment method, and it comprises the steps:
Utilize selective laser to melt manufacturing process and prepare TC4 titanium alloy member;
Double annealing is carried out to described TC titanium alloy member.
Preferably, the condition of described selective laser fusing is: laser power 300 ~ 325W, spot diameter 0.12 ~ 0.14mm, sweep speed 500 ~ 1200mm/s, the thick 0.03 ~ 0.04mm of paving bisque.
Preferably, described double annealing concrete operations are: first TC4 titanium alloy member is placed in the vacuum heat treatment furnace that temperature is 780 ~ 820 DEG C, and after insulation 1.5 ~ 2h, air cooling is to room temperature; Then be again placed in the vacuum heat that temperature is 530 ~ 550 DEG C, insulation 2 ~ 3h after again air cooling to room temperature.
Compared with prior art, the present invention has following beneficial effect:
1, after the present invention takes technique scheme, the tensile strength of the TC4 titanium alloy selective laser of acquisition fusing formed parts percentage elongation while more than 1000MPa reaches and is not less than 10%, thus improves the scope of application;
2, therefore the method can be widely used in Aero-Space labyrinth parts, and other all requires higher product to TC4 titanium alloy intensity and plasticity.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
embodiment 1
The fusing of a kind of TC4 titanium alloy selective laser increases material manufacture and heat treatment method, employing technological parameter is laser power 325W, spot diameter 0.14mm, sweep speed 1200mm/s, paving bisque thick 0.04mm prepare TC4 titanium alloy member, then be placed in 820 DEG C of vacuum drying ovens be incubated 2h after air cooling to room temperature, then be placed in 550 DEG C of vacuum drying ovens be incubated 3h after air cooling to room temperature.
embodiment 2
The fusing of a kind of TC4 titanium alloy selective laser increases material manufacture and heat treatment method, employing technological parameter is laser power 325W, spot diameter 0.12mm, sweep speed 1000mm/s, paving bisque thick 0.04mm prepare TC4 titanium alloy member, then be placed in 800 DEG C of vacuum drying ovens be incubated 2h after air cooling to room temperature, then be placed in 530 DEG C of vacuum drying ovens be incubated 3h after air cooling to room temperature.
embodiment 3
The fusing of a kind of TC4 titanium alloy selective laser increases material manufacture and heat treatment method, employing technological parameter is laser power 300W, spot diameter 0.12mm, sweep speed 800mm/s, paving bisque thick 0.03mm prepare TC4 titanium alloy member, then be placed in 780 DEG C of vacuum drying ovens be incubated 1.5h after air cooling to room temperature, then be placed in 530 DEG C of vacuum drying ovens be incubated 2h after air cooling to room temperature.
embodiment 4
The fusing of a kind of TC4 titanium alloy selective laser increases material manufacture and heat treatment method, employing technological parameter is laser power 300W, spot diameter 0.12mm, sweep speed 500mm/s, paving bisque thick 0.03mm prepare TC4 titanium alloy member, then be placed in 800 DEG C of vacuum drying ovens be incubated 2h after air cooling to room temperature, then be placed in 530 DEG C of vacuum drying ovens be incubated 3h after air cooling to room temperature.
Show after tested: the intensity of the TC4 titanium alloy member utilizing the inventive method to prepare reaches 1020MPa ~ 1040MPa, and percentage elongation reaches 10.0% ~ 13.5%.
Described in summary, through TC4 titanium alloy complex member prepared by TC4 titanium alloy selective laser of the present invention fusing increasing material manufacture and heat treatment method, its intensity percentage elongation while being not less than 1000MPa reaches the performance indications being not less than 10%, can meet the requirement of Aerospace Products to TC4 titanium alloy member intensity and plasticity.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (3)
1. the fusing of TC4 titanium alloy selective laser increases material manufacture and a heat treatment method, it is characterized in that, comprises the steps:
Utilize selective laser to melt manufacturing process and prepare TC4 titanium alloy member;
Double annealing is carried out to described TC titanium alloy member.
2. TC4 titanium alloy selective laser as claimed in claim 1 fusing increases material manufacture and heat treatment method, it is characterized in that, the condition of described selective laser fusing is: laser power 300 ~ 325W, spot diameter 0.12 ~ 0.14mm, sweep speed 500 ~ 1200mm/s, the thick 0.03 ~ 0.04mm of paving bisque.
3. TC4 titanium alloy member double annealing Technology for Heating Processing according to claim 1, it is characterized in that: described double annealing concrete operations are: first TC4 titanium alloy member is placed in the vacuum heat treatment furnace that temperature is 780 ~ 820 DEG C, after insulation 1.5 ~ 2h, air cooling is to room temperature; Then be again placed in the vacuum heat that temperature is 530 ~ 550 DEG C, insulation 2 ~ 3h after again air cooling to room temperature.
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| CN105522152A (en) * | 2016-01-19 | 2016-04-27 | 王岩 | 3D printing method of rare earth and titanium alloy material |
| CN105522151A (en) * | 2016-01-19 | 2016-04-27 | 王岩 | 3D printing method of medical titanium alloy material |
| CN105603255A (en) * | 2016-01-19 | 2016-05-25 | 王岩 | Medical titanium alloy material prepared by means of 3D (three-dimensional) printing |
| CN105648270A (en) * | 2016-01-19 | 2016-06-08 | 王岩 | Rare earth titanium alloy material for 3D printing |
| CN105798301A (en) * | 2016-05-12 | 2016-07-27 | 上海工程技术大学 | Stress slow release method for TC4 titanium alloy additive manufacturing component based on double electron beams |
| CN106041084A (en) * | 2016-08-17 | 2016-10-26 | 西北有色金属研究院 | Three-dimensional lattice material based on electron beam selective melting technology and preparation method of three-dimensional lattice material based on electron beam selective melting technology |
| CN106180719A (en) * | 2016-09-27 | 2016-12-07 | 飞而康快速制造科技有限责任公司 | Selective laser fusing increases IN718 component, system, heat treatment method and the device that material manufactures |
| CN106270514A (en) * | 2016-09-23 | 2017-01-04 | 江西洪都航空工业集团有限责任公司 | A kind of Ti6Al4V powder 3D prints and increases manufacture process |
| CN106513684A (en) * | 2016-11-10 | 2017-03-22 | 洛阳科威钨钼有限公司 | Production method for tungsten molybdenum alloy rotary target |
| CN106513675A (en) * | 2016-11-09 | 2017-03-22 | 北京卫星制造厂 | Laser additive manufacturing forming method of titanium alloy thin-walled component |
| CN106891006A (en) * | 2017-04-18 | 2017-06-27 | 中国科学院重庆绿色智能技术研究院 | A kind of selective laser fusing TC4 in-situ annealings go residual stress method |
| CN106987789A (en) * | 2017-04-01 | 2017-07-28 | 南京理工大学 | Improve the heat treatment method that SLM shapes TC4 strength plastic's matching performances |
| CN107299210A (en) * | 2017-06-16 | 2017-10-27 | 中国人民解放军第五七九工厂 | Heat treatment method after the blade reparation of the compressor blisk of aero-engine |
| CN107414078A (en) * | 2017-08-17 | 2017-12-01 | 湖南顶立科技有限公司 | Melt increasing material manufacturing technique in a kind of TC4 titanium alloys selective laser |
| CN108202142A (en) * | 2016-12-16 | 2018-06-26 | 北京有色金属研究总院 | A kind of laser substep increasing material manufacturing method |
| CN109207892A (en) * | 2018-11-05 | 2019-01-15 | 贵州大学 | A kind of organizational controls technique deforming biphase titanium alloy |
| CN109355606A (en) * | 2018-12-11 | 2019-02-19 | 陕西宏远航空锻造有限责任公司 | A method of improving TC4 forging intensity |
| CN110249068A (en) * | 2017-02-07 | 2019-09-17 | Eos有限公司电镀光纤系统 | The heat treatment method of titanium alloy component |
| CN110303156A (en) * | 2019-06-28 | 2019-10-08 | 上海交通大学 | A kind of increasing material manufacturing and heat-treated sturcture regulation method of Titanium Alloys for Aviation complex component |
| CN110340372A (en) * | 2018-04-08 | 2019-10-18 | 中国航发商用航空发动机有限责任公司 | Using the Laser Melting Deposition increasing material manufacturing method of PREP TC4 spherical powder |
| CN110523984A (en) * | 2019-09-18 | 2019-12-03 | 中国商用飞机有限责任公司上海飞机设计研究院 | A kind of collaboration promotes the laser gain material manufacturing method of titanium alloy surface precision and intensity |
| CN110551956A (en) * | 2019-07-03 | 2019-12-10 | 西北工业大学 | Processing method of TC4 titanium alloy |
| CN110605455A (en) * | 2018-06-15 | 2019-12-24 | 天津大学 | Titanium alloy CMT-pulse-heat treatment composite additive manufacturing method |
| CN110882414A (en) * | 2019-12-26 | 2020-03-17 | 中南大学 | Porous oral implant and preparation method thereof |
| CN111451505A (en) * | 2020-05-15 | 2020-07-28 | 中国航发北京航空材料研究院 | Selective laser melting preparation process of variable density gradient material with metal lattice structure |
| CN111570793A (en) * | 2020-05-15 | 2020-08-25 | 中国航发北京航空材料研究院 | Selective laser melting preparation method of variable-density gradient metal material with porous structure |
| CN112695220A (en) * | 2020-11-30 | 2021-04-23 | 上海航天精密机械研究所 | Selective laser melting forming nano TiB2Preparation method of reinforced aluminum-based composite material |
| CN114309649A (en) * | 2021-12-24 | 2022-04-12 | 吉林大学威海仿生研究院 | Novel method for improving corrosion resistance of NiTi alloy melted in laser selection area through heat treatment process |
| CN114378301A (en) * | 2021-12-30 | 2022-04-22 | 黑龙江省科学院高技术研究院 | Selective laser melting forming method for TC4 titanium alloy product |
| CN114635056A (en) * | 2022-05-17 | 2022-06-17 | 北京煜鼎增材制造研究院有限公司 | High-temperature high-strength titanium alloy and additive preparation method thereof |
| CN115125462A (en) * | 2022-05-13 | 2022-09-30 | 上海航翼高新技术发展研究院有限公司 | Heat treatment method for improving stability of structure and performance of titanium alloy manufactured by laser additive |
| CN115255373A (en) * | 2022-06-30 | 2022-11-01 | 上海航天精密机械研究所 | Method for preparing topological structure titanium-based composite material based on 3D printing and composite material |
| CN116586635A (en) * | 2023-05-17 | 2023-08-15 | 成都科宁达科技有限公司 | Method for improving bonding performance of TC4 titanium alloy gold porcelain through selective laser cladding |
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| CN105522151A (en) * | 2016-01-19 | 2016-04-27 | 王岩 | 3D printing method of medical titanium alloy material |
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| CN115255373B (en) * | 2022-06-30 | 2023-12-12 | 上海航天精密机械研究所 | Method for preparing topological structure titanium-based composite material based on 3D printing and composite material |
| CN116586635A (en) * | 2023-05-17 | 2023-08-15 | 成都科宁达科技有限公司 | Method for improving bonding performance of TC4 titanium alloy gold porcelain through selective laser cladding |
| CN116586635B (en) * | 2023-05-17 | 2024-01-19 | 成都科宁达科技有限公司 | Method for improving bonding performance of TC4 titanium alloy gold porcelain through selective laser cladding |
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