CN110605455A - Titanium alloy CMT-pulse-heat treatment composite additive manufacturing method - Google Patents
Titanium alloy CMT-pulse-heat treatment composite additive manufacturing method Download PDFInfo
- Publication number
- CN110605455A CN110605455A CN201810617195.2A CN201810617195A CN110605455A CN 110605455 A CN110605455 A CN 110605455A CN 201810617195 A CN201810617195 A CN 201810617195A CN 110605455 A CN110605455 A CN 110605455A
- Authority
- CN
- China
- Prior art keywords
- titanium alloy
- cmt
- heat treatment
- pulse
- additive manufacturing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
- B23K9/044—Built-up welding on three-dimensional surfaces
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Plasma & Fusion (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a titanium alloy CMT-pulse-heat treatment composite additive manufacturing method, which adopts a CMT-pulse program to carry out titanium alloy arc manufacturing and carries out heat treatment on a titanium alloy deposition part after CMT titanium alloy additive manufacturing. The microstructure of the titanium alloy after heat treatment is obviously improved. Under the condition of 600 ℃ for 4h, the stress in the titanium alloy deposition part is released, the microstructure is a parallel cluster structure and a basket structure, and the ultimate tensile strength is increased; under the condition of 900 ℃ for 2h, possible precipitation hardening is eliminated and a stable initial state is formed, the tissue is still a mixture of parallel cluster tissue and basket tissue, and the Vickers hardness is increased.
Description
Technical Field
The invention belongs to the technical field of additive manufacturing, and particularly relates to additive manufacturing of a titanium alloy CMT + P deposition part by Cold Metal Transfer (CMT), namely CMT and pulse mixing and compounding, and the performance of the titanium alloy deposition part is improved by adopting two heat treatment methods.
Background
The use of titanium in the aerospace industry continues to increase. The CMT + P welding is a new process improved on the basis of a CMT welding technology, is a welding process combining the traditional CMT welding and the pulse MIG welding, and changes the whole welding process. The additive manufacturing mode of CMT + P can be adopted to enable the titanium alloy to be widely applied. In additive manufacturing, the material may undergo complex thermal cycling. Many additive manufacturing processes result in metastable microstructures and non-equilibrium phases, and the texture of each deposited layer of material may even be different.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a CMT-pulse-heat treatment composite additive manufacturing method for a titanium alloy. Through different heating temperatures and heat preservation time of the heat treatment, the internal structure of the formed part is improved, and therefore the performance of the titanium alloy deposited part is improved.
The technical purpose of the invention is realized by the following technical scheme:
a titanium alloy CMT-pulse-heat treatment composite additive manufacturing method adopts a CMT and pulse combined program to perform additive manufacturing on a titanium alloy, and then performs heat treatment on a titanium alloy deposition part subjected to the additive manufacturing on the CMT titanium alloy as follows:
(1) heating to 600 +/-5 ℃ from the room temperature of 20-25 ℃ at the heating rate of 1-5 ℃ per minute, preserving the heat for 1-5 hours in the air atmosphere, and then cooling to the room temperature of 20-25 ℃ at the cooling rate of 1-2 ℃ per minute;
(2) raising the temperature from room temperature of 20-25 ℃ to 900 +/-5 ℃ at a temperature raising rate of 1-5 ℃ per minute, preserving the temperature for 1-5 hours in an air atmosphere, and then lowering the temperature to room temperature of 20-25 ℃ at a temperature lowering rate of 1-2 ℃ per minute.
In the first heat treatment condition, the microstructure of the titanium alloy after heat treatment is obviously improved, the stress in the CMT titanium alloy additive manufacturing is released, and the microstructure is a parallel cluster structure and a basket structure.
In the second heat treatment, the microstructure of the heat treated titanium alloy is significantly improved, eliminating possible precipitation hardening and forming a stable initial state, the structure still being a mixture of parallel cluster and basket structures.
In the technical scheme, the CMT cold metal transition welding adopts a titanium alloy CMT and pulse combination program, and the peak current is as follows: 330A-340A, average voltage: 17V-19V, the wire feeding speed is 5-7m/min, the overall traveling speed of the welding gun is 0.3-0.5 m/min, and the gas flow is 10-20L/min.
In the technical scheme, the CMT cold metal transition welding adopts a titanium alloy CMT and pulse combination program, and the peak current is as follows: 330A-335A, average voltage: 18V-19V, the wire feeding speed is 5-6m/min, the overall traveling speed of the welding gun is 0.3-0.4 m/min, and the gas flow is 15-20L/min.
In the technical scheme, CMT surfacing is repeatedly carried out in a multilayer single-pass mode to construct the titanium alloy deposition part.
In the above technical solution, the heat treatment is performed as follows:
(1) heating to 600 +/-5 ℃ from the room temperature of 20-25 ℃ at the heating rate of 1-5 ℃ per minute, preserving the heat for 2-4 hours in the air atmosphere, and then cooling to the room temperature of 20-25 ℃ at the cooling rate of 1-2 ℃ per minute;
(2) raising the temperature from room temperature of 20-25 ℃ to 900 +/-5 ℃ at a temperature raising rate of 1-5 ℃ per minute, preserving the temperature for 1-2 hours in an air atmosphere, and then lowering the temperature to room temperature of 20-25 ℃ at a temperature lowering rate of 1-2 ℃ per minute.
The treatment mode of the invention can realize CMT and pulse composite additive manufacturing of the deposited part, and the performance of the CMT additive manufacturing deposited part after heat treatment is improved. Through tests, the Vickers hardness of the titanium alloy CMT + P additive deposition part is averagely increased by 8% -10% under the condition of 600 ℃ for 4h compared with that of the untreated titanium alloy CMT + P additive deposition part; the Vickers hardness of the titanium alloy CMT + P additive deposition part is averagely increased by 4% -7% under the condition of 900 ℃ and 2h compared with that of the titanium alloy CMT + P additive deposition part without treatment; the ultimate tensile strength of the titanium alloy CMT + P additive deposition part under the condition of 600 ℃ for 4h is increased by 8-10% on average compared with that of the titanium alloy CMT + P additive deposition part without treatment.
Drawings
FIG. 1 is a schematic diagram of an additive manufacturing process using a CMT + P process according to the present invention.
FIG. 2 is a schematic drawing of the dimensions of a tensile specimen according to the invention.
FIG. 3 is a diagram of a CMT + P titanium alloy additive manufactured part in accordance with the technical solution of the present invention.
Fig. 4 is a cross-sectional SEM topography of a titanium alloy CMT + P additive manufactured part and a post heat treatment additive manufactured part, wherein (a) a non-treated titanium alloy CMT + P additive structure; (b) the titanium alloy material adding structure is a titanium alloy material adding structure with the temperature of 600 ℃ for 4 hours; (c) the titanium alloy material added structure is a titanium alloy material added structure with the temperature of 900 ℃ for 2 h.
FIG. 5 is a graph of Vickers hardness distribution of a titanium alloy CMT + P additively manufactured part without and after heat treatment.
FIG. 6 is a plot of the ultimate tensile strength of a titanium alloy CMT + P additively manufactured part after no treatment and heat treatment.
FIG. 7 is a waveform of the titanium alloy CMT + P program control used in the examples of the present invention.
Detailed Description
The technical scheme of the invention is further illustrated by the following specific examples:
the experimental substrate for metal arc additive manufacturing is titanium alloy TC4, and the size of the substrate is 200 multiplied by 50 multiplied by 4mm3The welding wire is TC4 welding wire with the diameter of 1.2 mm. And performing a titanium alloy arc additive manufacturing test by adopting a titanium alloy program and a cold metal transition technology. The welding scheme adopted by the experiment is completed on a second generation CMT welding device Advanced 4000R and MOTOMAN NX100/HP6 robot integrated welding system produced by Austria Focus company, and CMT and pulse combination programs are adopted to carry out titanium alloy arc additive manufacturing of CMT + P.
The method mainly comprises the following steps:
1, before the test, removing an oxide film on a titanium alloy substrate by using a stainless steel wire brush until silvery white metallic luster is exposed, cleaning oil stains and dirt on the surface of a welding part by using alcohol, and welding within 2 hours after the oxide film is removed so as not to generate a new oxide film; the chemical compositions of the titanium plate and the welding wire are shown in the following table.
2 setting welding parameters, wherein the wire feeding speed is 6m/min, the overall travelling speed of a welding gun is 0.3m/min, the gas flow is 20L/min, and performing reciprocating CMT + P composite additive manufacturing to form a titanium alloy CMT + P additive manufacturing part as shown in figure 3 as shown in figure 1;
3 a titanium alloy CMT + P additively manufactured coupon and a heat treated additively manufactured coupon were cut by wire cutting and compared, as shown in fig. 4, comprising: (a) the untreated titanium alloy CMT + P additive structure b) is a 600 ℃ 4h titanium alloy CMT + P additive structure, and the untreated titanium alloy CMT + P additive structure c) is a 900 ℃ 2h titanium alloy CMT + P additive structure. Titanium alloy additive structure. As shown in fig. 4, the grain size increased significantly after heat treatment.
And (3) performing CMT + P additive manufacturing on the aluminum alloy by adopting the same process parameters, cutting a sample by utilizing linear cutting according to the shape and the size shown in the attached drawings 1 and 2, and performing heat treatment under different conditions to obtain an untreated CMT + P additive deposition part and a heat-treated additive deposition part respectively, wherein the length direction of a longitudinal tensile sample is vertical to the surface of the base material, namely the longitudinal tensile sample spans (contains) a plurality of welding layers deposited by additive manufacturing in the length direction. The cut tensile specimen and the hardness specimen were subjected to vickers hardness and tensile tests, and the tensile specimen was as shown in fig. 2, and the length and width of the hardness specimen were kept consistent with those of the tensile specimen.
5. Vickers hardness test
The Vickers hardness test was performed on an MMU-5G Vickers hardness tester. The experimental parameters are as follows: 500gf load, hold time 15S. As shown in the attached figure 5, the average Vickers hardness under the conditions of 600 ℃ for 4h and 900 ℃ for 2h is obviously higher than that of a non-treated titanium alloy CMT + P additive deposition part. Compared with the titanium alloy CMT + P additive deposition part under the condition of 600 ℃ for 4 hours, the average Vickers hardness of the non-treated titanium alloy CMT + P additive deposition part is changed from 388.89HV to 420.94HV and is increased by 8%; compared with the titanium alloy CMT + P additive deposition part under the condition of 900 ℃ for 2h, the average Vickers hardness of the untreated titanium alloy CMT + P additive deposition part is changed from 388.89HV to 403.54HV, and is increased by 4%.
6 tensile test
The CMT + P additive deposition part sample without treatment and the CMT + P additive deposition part sample after heat treatment are subjected to tensile test at the room temperature of 20-25 ℃ and the tensile rate of 1mm/min, and as shown in figure 6, the ultimate tensile strength of the test sample after heat treatment for 4 hours at the temperature of 600 ℃ is improved. Compared with the titanium alloy CMT + P additive deposition part under the condition of 600 ℃ for 4h, the ultimate tensile strength of the untreated titanium alloy CMT + P additive deposition part is changed from 1040MPa to 1124MPa and is increased by 8 percent.
According to the invention, the deposited part can be manufactured by CMT + P additive materials by adjusting the process parameters, the performance is improved after heat treatment, and the Vickers hardness of the titanium alloy CMT + P additive material deposited part is increased by 8-10% on average compared with the non-treated titanium alloy CMT + P additive material deposited part by testing under the condition of 600 ℃ for 4 hours; the Vickers hardness of the titanium alloy CMT + P additive deposition part is averagely increased by 4% -7% under the condition of 900 ℃ and 2h compared with that of the titanium alloy CMT + P additive deposition part without treatment; the ultimate tensile strength of the titanium alloy CMT + P additive deposition part under the condition of 600 ℃ for 4h is increased by 8-10% on average compared with that of the titanium alloy CMT + P additive deposition part without treatment.
The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.
Claims (7)
1. A titanium alloy CMT-pulse-heat treatment composite additive manufacturing method is characterized in that a CMT and pulse combined program is adopted to perform additive manufacturing on a titanium alloy, and then heat treatment is performed on a titanium alloy deposition part after the CMT titanium alloy additive manufacturing, wherein the heat treatment comprises the following steps:
(1) heating to 600 +/-5 ℃ from the room temperature of 20-25 ℃ at the heating rate of 1-5 ℃ per minute, preserving the heat for 1-5 hours in the air atmosphere, and then cooling to the room temperature of 20-25 ℃ at the cooling rate of 1-2 ℃ per minute;
(2) raising the temperature from room temperature of 20-25 ℃ to 900 +/-5 ℃ at a temperature raising rate of 1-5 ℃ per minute, preserving the temperature for 1-5 hours in an air atmosphere, and then lowering the temperature to room temperature of 20-25 ℃ at a temperature lowering rate of 1-2 ℃ per minute.
2. The CMT-pulse-heat treated composite additive manufacturing method of claim 1, wherein the heat treatment is performed as follows:
(1) heating to 600 +/-5 ℃ from the room temperature of 20-25 ℃ at the heating rate of 1-5 ℃ per minute, preserving the heat for 2-4 hours in the air atmosphere, and then cooling to the room temperature of 20-25 ℃ at the cooling rate of 1-2 ℃ per minute;
(2) raising the temperature from room temperature of 20-25 ℃ to 900 +/-5 ℃ at a temperature raising rate of 1-5 ℃ per minute, preserving the temperature for 1-2 hours in an air atmosphere, and then lowering the temperature to room temperature of 20-25 ℃ at a temperature lowering rate of 1-2 ℃ per minute.
3. The titanium alloy CMT-pulse-heat treatment composite additive manufacturing method according to claim 1 or 2, wherein the CMT cold metal transition welding adopts a titanium alloy CMT and pulse combination procedure, and the peak current: 330A-340A, average voltage: 17V-19V, the wire feeding speed is 5-7m/min, the overall traveling speed of the welding gun is 0.3-0.5 m/min, and the gas flow is 10-20L/min.
4. The titanium alloy CMT-pulse-heat treatment composite additive manufacturing method according to claim 1 or 2, wherein the CMT cold metal transition welding adopts a titanium alloy CMT and pulse combination procedure, and the peak current: 330A-335A, average voltage: 18V-19V, the wire feeding speed is 5-6m/min, the overall traveling speed of the welding gun is 0.3-0.4 m/min, and the gas flow is 15-20L/min.
5. The titanium alloy CMT-pulse-heat treatment composite additive manufacturing method according to claim 1 or 2, characterized in that CMT overlaying is repeatedly performed in a multi-layer and single-pass manner to construct a titanium alloy deposition part.
6. The CMT-pulse-heat treatment composite additive manufacturing method of titanium alloy according to claim 1 or 2, wherein in the first heat treatment condition, the microstructure of the titanium alloy after heat treatment is obviously improved, the stress in the CMT titanium alloy additive manufacturing is released, the microstructure is a parallel cluster structure and a basket structure, the Vickers hardness of the titanium alloy CMT + pulse additive deposition part is averagely increased by 8-10% compared with the titanium alloy CMT + pulse additive deposition part without treatment, and the ultimate tensile strength is averagely increased by 8-10%.
7. The CMT-pulse-heat treatment composite additive manufacturing method of titanium alloy according to claim 1 or 2, characterized in that in the second heat treatment situation, the microstructure of the titanium alloy after heat treatment is obviously improved, possible precipitation hardening is eliminated, and a stable initial state is formed, the microstructure is still a mixture of parallel cluster structure and basket structure, and the Vickers hardness of the CMT + pulse additive deposition part of titanium alloy is averagely increased by 4% -7% compared with the CMT + pulse additive deposition part of titanium alloy without treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810617195.2A CN110605455A (en) | 2018-06-15 | 2018-06-15 | Titanium alloy CMT-pulse-heat treatment composite additive manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810617195.2A CN110605455A (en) | 2018-06-15 | 2018-06-15 | Titanium alloy CMT-pulse-heat treatment composite additive manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110605455A true CN110605455A (en) | 2019-12-24 |
Family
ID=68887760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810617195.2A Pending CN110605455A (en) | 2018-06-15 | 2018-06-15 | Titanium alloy CMT-pulse-heat treatment composite additive manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110605455A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111633306A (en) * | 2020-05-28 | 2020-09-08 | 华中科技大学 | Nickel-titanium shape memory alloy part and manufacturing method thereof |
| CN113210808A (en) * | 2020-01-17 | 2021-08-06 | 天津大学 | Electric arc additive manufacturing method of magnesium alloy |
| CN116145065A (en) * | 2023-02-27 | 2023-05-23 | 沈阳工业大学 | Multistage heat treatment method for improving vickers hardness of TC4 titanium alloy additive components |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105014073A (en) * | 2015-08-18 | 2015-11-04 | 上海航天精密机械研究所 | TC4 titanium alloy laser selective melting material additive manufacturing and heat treatment method |
| KR101616499B1 (en) * | 2015-08-11 | 2016-04-29 | 한국생산기술연구원 | Heat treatment method for precipitation hardening of metal product manufactured by 3D printing |
| CN106119749A (en) * | 2016-06-28 | 2016-11-16 | 深圳市晶莱新材料科技有限公司 | A kind of 3D prints Ti 6Al 4V structural member Technology for Heating Processing |
| CN106312461A (en) * | 2016-10-11 | 2017-01-11 | 中国兵器科学研究院宁波分院 | Preparing method for large complex aluminum alloy structural piece |
| CN106312060A (en) * | 2015-06-29 | 2017-01-11 | 中国科学院金属研究所 | Preparation method for high-performance low-modulus medical titanium alloy three-dimensional metal part |
| WO2017191246A1 (en) * | 2016-05-04 | 2017-11-09 | Universite Libre De Bruxelles | Method for manufacturing ti alloys with enhanced strength-ductility balance |
-
2018
- 2018-06-15 CN CN201810617195.2A patent/CN110605455A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106312060A (en) * | 2015-06-29 | 2017-01-11 | 中国科学院金属研究所 | Preparation method for high-performance low-modulus medical titanium alloy three-dimensional metal part |
| KR101616499B1 (en) * | 2015-08-11 | 2016-04-29 | 한국생산기술연구원 | Heat treatment method for precipitation hardening of metal product manufactured by 3D printing |
| CN105014073A (en) * | 2015-08-18 | 2015-11-04 | 上海航天精密机械研究所 | TC4 titanium alloy laser selective melting material additive manufacturing and heat treatment method |
| WO2017191246A1 (en) * | 2016-05-04 | 2017-11-09 | Universite Libre De Bruxelles | Method for manufacturing ti alloys with enhanced strength-ductility balance |
| CN106119749A (en) * | 2016-06-28 | 2016-11-16 | 深圳市晶莱新材料科技有限公司 | A kind of 3D prints Ti 6Al 4V structural member Technology for Heating Processing |
| CN106312461A (en) * | 2016-10-11 | 2017-01-11 | 中国兵器科学研究院宁波分院 | Preparing method for large complex aluminum alloy structural piece |
Non-Patent Citations (2)
| Title |
|---|
| ERHARD BRANDL 等: "Morphology, microstructure, and hardness of titanium(Ti-6Al-4V)blocks deposited by wire-feed additive layer manufacture(ALM)", 《MATERIAL SCIENCE AND ENGINEERING A》 * |
| 安徽省质量技术监督局: "《质量实践—2016年安徽省质监局调研课题获奖成果合集》", 30 June 2017, 中国质检出版社等 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113210808A (en) * | 2020-01-17 | 2021-08-06 | 天津大学 | Electric arc additive manufacturing method of magnesium alloy |
| CN111633306A (en) * | 2020-05-28 | 2020-09-08 | 华中科技大学 | Nickel-titanium shape memory alloy part and manufacturing method thereof |
| CN111633306B (en) * | 2020-05-28 | 2021-10-08 | 华中科技大学 | Nickel-titanium shape memory alloy part and manufacturing method thereof |
| CN116145065A (en) * | 2023-02-27 | 2023-05-23 | 沈阳工业大学 | Multistage heat treatment method for improving vickers hardness of TC4 titanium alloy additive components |
| CN116145065B (en) * | 2023-02-27 | 2024-06-11 | 沈阳工业大学 | Multistage heat treatment method for improving vickers hardness of TC4 titanium alloy additive components |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4830262A (en) | Method of making titanium-nickel alloys by consolidation of compound material | |
| CN110605455A (en) | Titanium alloy CMT-pulse-heat treatment composite additive manufacturing method | |
| CN110241367A (en) | A kind of aluminium alloy method for toughening based on pulse current | |
| KR102233844B1 (en) | Micro grain-texture electrode wire material and preparation method therefor and use thereof | |
| KR102326967B1 (en) | Method of making textured coated electrode wire | |
| US11767573B2 (en) | Ferritic stainless steel sheet and method of producing same, and al or al alloy coated stainless steel sheet | |
| CN111992711B (en) | Method for improving tensile property of titanium alloy additive manufacturing by adding Nb powder | |
| CN109693019B (en) | Method for preparing high-strength high-hardness stainless steel by wire arc melting | |
| He et al. | Improvement in oxidation resistance of Ti2AlNb alloys at high temperatures by laser shock peening | |
| CN114226750B (en) | Shell-structure-imitated alloy laser additive manufacturing method | |
| CN110605456A (en) | Titanium alloy CMT-heat treatment composite additive manufacturing method | |
| CN110592510A (en) | Method for electromagnetic impact reinforcement of titanium alloy | |
| CN105603258B (en) | A kind of high intensity zircaloy and preparation method | |
| Chen et al. | Effect of heat treatment on microstructure and residual stress of wire arc sprayed high carbon steel coating | |
| CN113770490B (en) | Method for improving plasticity of TC4 titanium alloy component manufactured by additive manufacturing through obtaining alpha/beta interface phase | |
| Pushilina et al. | Heat treatment of the Ti-6Al-4V alloy manufactured by electron beam melting | |
| JP6006846B1 (en) | Conductive member, conductive member for gas insulated switchgear, and manufacturing method of conductive member for gas insulated switchgear | |
| Joo et al. | Effect of thermomechanical treatment on mechanical and electrical properties of Cu-Cr-Zr alloy in continuous hybrid process | |
| CN113373391B (en) | Method for improving high-temperature oxidation resistance of nickel-based alloy forging | |
| CN114807793A (en) | Heat treatment process for additive manufacturing of Al-Mg-Sc alloy | |
| RU2751067C2 (en) | METHOD OF MAKING WIRE FROM (α+β)-TITANIUM ALLOY FOR ADDITIVE TECHNOLOGY | |
| CN115106620B (en) | Method for improving toughness of 7-series aluminum alloy based on arc additive manufacturing | |
| CN110257665A (en) | A kind of preparation method of soft/hard filament fine copper-brass composite wire | |
| JP5324964B2 (en) | Method for producing Cr-containing strip steel | |
| JP2006257528A (en) | Method for manufacturing thin sheet of pure molybdenum or molybdenum alloy superior in deep drawability |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191224 |
|
| RJ01 | Rejection of invention patent application after publication |