CN108274001A - A kind of TC4 titanium alloys laser gain material manufacturing process - Google Patents
A kind of TC4 titanium alloys laser gain material manufacturing process Download PDFInfo
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- CN108274001A CN108274001A CN201810333201.1A CN201810333201A CN108274001A CN 108274001 A CN108274001 A CN 108274001A CN 201810333201 A CN201810333201 A CN 201810333201A CN 108274001 A CN108274001 A CN 108274001A
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- Prior art keywords
- material manufacturing
- titanium alloys
- increasing material
- manufacturing technique
- laser scanning
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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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
- 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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/36—Process control of energy beam parameters
-
- 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
- B22F10/30—Process control
- B22F10/36—Process control of energy beam parameters
- B22F10/366—Scanning parameters, e.g. hatch distance or scanning strategy
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/50—Treatment of workpieces or articles during build-up, e.g. treatments applied to fused layers during build-up
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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
- B33Y10/00—Processes of additive manufacturing
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of increasing material manufacturing techniques of TC4 titanium alloys, and plasticity is not reduced while greatly improving TC4 titanium alloy intensity.The present invention is melted TC4 titanium alloy powders using laser, and solidification carries out cryogenic inert gas processing, to generate a large amount of defects immediately later.
Description
Technical field
The present invention relates to increases material manufacturing technology field more particularly to a kind of increasing material manufacturing techniques of TC4 titanium alloys.
Background technology
TC4 titanium alloys excellent properties such as high, corrosion-resistant with specific strength, are a kind of aerospace field commonly lightweight knots
Structure material.However, the plasticity of titanium alloy is poor, conventional machining techniques are even more to be difficult to realize variable cross-section, internal complicated water runner, precise thin
The manufacture of the complex components such as wall pieces, and these are easily achieved increases material manufacturing technology.
Invention content
Goal of the invention：The purpose of the present invention is to provide a kind of laser gain material manufacturing process of high intensity TC4 titanium alloys, originally
The technique that invention provides can obtain the TC4 titanium alloys of good quality.
Technical scheme is as follows:
The present invention provides a kind of increasing material manufacturing techniques of TC4 titanium alloys, include the following steps：
（1）TC4 titanium alloy raw material powder is subjected to powdering, forms powder bed；
（2）Under inert gas protection, laser scanning is carried out to powder bed, carries out increasing material manufacturing；
（3）It is cooled down using less than subzero 30 degrees Celsius of inert gas；
（4）Carry out stress relief annealing process；
（5）Repeat step（1）-（4）.
Preferably, the power of the laser scanning is preferably 800~1000W；The grain of the TC4 titanium alloy raw materials powder
Preferably 5~10 μm of degree；Spot diameter during the laser scanning is preferably 50~100 μm, and the thickness of the powdering is excellent
It is selected as 30~50 μm.The speed of laser scanning is preferably 8000~10000mm/s, and the sweep span of laser scanning is preferably 0.1
The mode of~0.2mm, the stress relief annealing process are selected as：Be heated to 140~220 DEG C carry out again it is air-cooled.
Beneficial effect：
In the present invention, after using laser scanning, TC4 titanium alloy powders melt, and solidification carries out cryogenic inert gas immediately later
Processing, can generate a large amount of defects, especially generate high density dislocation network, greatly enhance the intensity of TC4 titanium alloys；This net
Network can also allow for dislocation to pass through simultaneously, not reduce plasticity while intensity increases in this way.Meanwhile scheme using the present invention
Complex-shaped part can be manufactured.
To facilitate the understanding of the present invention, embodiment is provided below for explaining the present invention, but they are not constituted to the present invention
Restriction.
Specific implementation mode
Below by the detailed description present invention in conjunction with the embodiments.
Embodiment 1
（1）TC4 titanium alloy raw material powder is subjected to powdering, forms powder bed, the thickness of powdering is 50 μm；
（2）Under the protection of argon body, laser scanning is carried out to powder bed, carries out increasing material manufacturing；Wherein, laser power 800W swashs
Spot diameter during optical scanning is preferably 50 μm, and the speed of laser scanning is preferably 10000mm/s, the scanning of laser scanning
Spacing is preferably 0.17mm；
（3）It is cooled down using subzero 30 degrees Celsius of argon gas；
（4）Carry out stress relief annealing process：Be heated to 140 DEG C carry out again it is air-cooled；
（5）Repeat step（1）-（4）10 times, obtain TC4 titanium alloy samples.
Extension test, tensile strength 1389Mpa, elongation percentage 11% are carried out to the TC4 titanium alloys of preparation.
Embodiment 2
（1）TC4 titanium alloy raw material powder is subjected to powdering, forms powder bed, the thickness of powdering is preferably 30 μm；
（2）Under the protection of argon body, laser scanning is carried out to powder bed, carries out increasing material manufacturing；Wherein, laser power 1000W swashs
Spot diameter during optical scanning is preferably 100 μm, and the speed of laser scanning is preferably 9000mm/s, the scanning of laser scanning
Spacing is preferably 0.1mm；
（3）It is cooled down using subzero 50 degrees Celsius of argon gas；
（4）Carry out stress relief annealing process：Be heated to 220 DEG C carry out again it is air-cooled；
（5）Repeat step（1）-（4）10 times, obtain TC4 titanium alloy samples.
Extension test, tensile strength 1452Mpa, elongation percentage 10% are carried out to the TC4 titanium alloys of preparation.
Embodiment 3
（1）TC4 titanium alloy raw material powder is subjected to powdering, forms powder bed, the thickness of powdering is 39 μm；
（2）Under the protection of argon body, laser scanning is carried out to powder bed, carries out increasing material manufacturing；Wherein, laser power 850W swashs
Spot diameter during optical scanning is preferably 70 μm, and the speed of laser scanning is preferably 8000mm/s, the scanning of laser scanning
Spacing is preferably 0.2mm；
（3）It is cooled down using subzero 40 degrees Celsius of argon gas；
（4）Carry out stress relief annealing process：Be heated to 170 DEG C carry out again it is air-cooled；
（5）Repeat step（1）-（4）10 times, obtain TC4 titanium alloy samples.
Extension test, tensile strength 1411Mpa, elongation percentage 12% are carried out to the TC4 titanium alloys of preparation.
Comparison：The tensile strength for the TC4 titanium alloys that conventional forging, annealing obtain is 920Mpa, elongation percentage 12%；It can be with
Find out, technical scheme of the present invention substantially increases the tensile strength of TC4 titanium alloys, while plasticity does not incur loss.
The above is only some examples of embodiment of the present invention, it should be pointed out that：For the technology people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of TC4 titanium alloys increasing material manufacturing technique, it is characterised in that：The technique using laser by TC4 titanium alloy powders melt,
Solidification carries out cryogenic inert gas processing later.
2. a kind of TC4 titanium alloys increasing material manufacturing technique as described in claim 1, it is characterised in that：The technique includes following step
Suddenly：
（1）TC4 titanium alloy raw material powder is subjected to powdering, forms powder bed；
（2）Under inert gas protection, laser scanning is carried out to powder bed, carries out increasing material manufacturing；
（3）It is cooled down using less than subzero 30 degrees Celsius of inert gas；
（4）Carry out stress relief annealing process；
（5）Repeat step（1）-（4）.
3. a kind of TC4 titanium alloys increasing material manufacturing technique as claimed in claim 2, it is characterised in that：The power of laser scanning is
800~1000W.
4. a kind of TC4 titanium alloys increasing material manufacturing technique as claimed in claim 2, it is characterised in that：TC4 titanium alloy raw material powder
Granularity be 5~10 μm.
5. a kind of TC4 titanium alloys increasing material manufacturing technique as claimed in claim 2, it is characterised in that：The hot spot of laser scanning is straight
Diameter is 50~100 μm.
6. a kind of TC4 titanium alloys increasing material manufacturing technique as claimed in claim 2, it is characterised in that：The thickness of powdering be 30~
50μm。
7. a kind of TC4 titanium alloys increasing material manufacturing technique as claimed in claim 2, it is characterised in that：The speed of laser scanning is
8000~10000mm/s.
8. a kind of TC4 titanium alloys increasing material manufacturing technique as claimed in claim 2, it is characterised in that：The scanning room of laser scanning
Away from for 0.1~0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810333201.1A CN108274001A (en) | 2018-04-13 | 2018-04-13 | A kind of TC4 titanium alloys laser gain material manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810333201.1A CN108274001A (en) | 2018-04-13 | 2018-04-13 | A kind of TC4 titanium alloys laser gain material manufacturing process |
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| Publication Number | Publication Date |
|---|---|
| CN108274001A true CN108274001A (en) | 2018-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810333201.1A Withdrawn CN108274001A (en) | 2018-04-13 | 2018-04-13 | A kind of TC4 titanium alloys laser gain material manufacturing process |
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| CN (1) | CN108274001A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114131043A (en) * | 2021-11-18 | 2022-03-04 | 上海电气集团股份有限公司 | Method for improving utilization rate of TC4 titanium alloy powder |
Citations (6)
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|---|---|---|---|---|
| CN102328081A (en) * | 2011-09-26 | 2012-01-25 | 华中科技大学 | Method for rapidly forming three-dimensional metal parts by high-power lasers |
| CN104399978A (en) * | 2014-11-27 | 2015-03-11 | 华南理工大学 | 3D (Three Dimensional) forming method for large-sized porous amorphous alloy part of complex shape |
| CN104759625A (en) * | 2015-03-27 | 2015-07-08 | 桂林电子科技大学 | Material and method for preparing aluminum alloy structural member by using laser 3D (Three-Dimensional) printing technology |
| CN105215359A (en) * | 2015-10-08 | 2016-01-06 | 湖南顶立科技有限公司 | The lower metal dust of a kind of high-pressure inert gas protection increases material manufacture method |
| US20160001364A1 (en) * | 2013-03-13 | 2016-01-07 | United Technologies Corporation | Uninteruppted filtering system for selective laser melting powder bed additive manufacturing process |
| CN107470629A (en) * | 2017-08-30 | 2017-12-15 | 湖南顶立科技有限公司 | One kind increases material component Technology for Heating Processing |
-
2018
- 2018-04-13 CN CN201810333201.1A patent/CN108274001A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328081A (en) * | 2011-09-26 | 2012-01-25 | 华中科技大学 | Method for rapidly forming three-dimensional metal parts by high-power lasers |
| US20160001364A1 (en) * | 2013-03-13 | 2016-01-07 | United Technologies Corporation | Uninteruppted filtering system for selective laser melting powder bed additive manufacturing process |
| CN104399978A (en) * | 2014-11-27 | 2015-03-11 | 华南理工大学 | 3D (Three Dimensional) forming method for large-sized porous amorphous alloy part of complex shape |
| CN104759625A (en) * | 2015-03-27 | 2015-07-08 | 桂林电子科技大学 | Material and method for preparing aluminum alloy structural member by using laser 3D (Three-Dimensional) printing technology |
| CN105215359A (en) * | 2015-10-08 | 2016-01-06 | 湖南顶立科技有限公司 | The lower metal dust of a kind of high-pressure inert gas protection increases material manufacture method |
| CN107470629A (en) * | 2017-08-30 | 2017-12-15 | 湖南顶立科技有限公司 | One kind increases material component Technology for Heating Processing |
Non-Patent Citations (2)
| Title |
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| 王顺花，王彦平1: "《材料科学基础》", 31 January 2011, 西南交通大学出版社 * |
| 邓志谦: "《铜及铜合金物理冶金基础》", 31 December 2010, 中南大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114131043A (en) * | 2021-11-18 | 2022-03-04 | 上海电气集团股份有限公司 | Method for improving utilization rate of TC4 titanium alloy powder |
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