Microstructural evolution and performance improvement mechanism of Ti–6Al–4V fabricated by oscillating-wire laser additive manufacturing
This work proposes an oscillating wire laser additive manufacturing (O-WLAM), which is based on the wire laser additive manufacturing technology (WLAM) and combined with the laser oscillating welding technology. For different laser oscillation patterns, it shows a trend that metallurgical defects su...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-05-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423009560 |
| _version_ | 1797798750785110016 |
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| author | Guoqing Dai Jin Min Haifei Lu Hui Chang Zhonggang Sun Shuwei Ji Jinzhong Lu Lili Chang |
| author_facet | Guoqing Dai Jin Min Haifei Lu Hui Chang Zhonggang Sun Shuwei Ji Jinzhong Lu Lili Chang |
| author_sort | Guoqing Dai |
| collection | DOAJ |
| description | This work proposes an oscillating wire laser additive manufacturing (O-WLAM), which is based on the wire laser additive manufacturing technology (WLAM) and combined with the laser oscillating welding technology. For different laser oscillation patterns, it shows a trend that metallurgical defects such as porosity, microstructural and columnar grain size decrease with the increase of oscillation frequency and oscillation amplitude. In solidified grains formed under laser oscillation, a complex oscillation of melt pool agitation could lead to a refining effect on the β grains size. The corresponding tendency of epitaxial growth of the prior β grains is weakened as well. The process experiments in this work provide a new idea of laser oscillation for wire laser additive manufacturing. The use of laser oscillation to achieve improvement of metallurgical defects and optimization of microstructure has some guiding significance for wire laser additive manufacturing. |
| first_indexed | 2024-03-13T04:08:33Z |
| format | Article |
| id | doaj.art-97f20652700c4942af2a94a83f719378 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-13T04:08:33Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-97f20652700c4942af2a94a83f7193782023-06-21T06:57:21ZengElsevierJournal of Materials Research and Technology2238-78542023-05-012470217039Microstructural evolution and performance improvement mechanism of Ti–6Al–4V fabricated by oscillating-wire laser additive manufacturingGuoqing Dai0Jin Min1Haifei Lu2Hui Chang3Zhonggang Sun4Shuwei Ji5Jinzhong Lu6Lili Chang7College of Materials Science and Technology, Tech Institute for Advanced Materials, Nanjing Tech University, Nanjing 211816, ChinaDepartment of Materials Science and Engineering, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210093, ChinaSchool of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, PR ChinaCollege of Materials Science and Technology, Tech Institute for Advanced Materials, Nanjing Tech University, Nanjing 211816, ChinaCollege of Materials Science and Technology, Tech Institute for Advanced Materials, Nanjing Tech University, Nanjing 211816, China; Corresponding author.College of Materials Science and Technology, Tech Institute for Advanced Materials, Nanjing Tech University, Nanjing 211816, ChinaSchool of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, PR ChinaNanjing Zhongke Raycham Laser Technology Co. Ltd, Nanjing, Jiangsu 210009, ChinaThis work proposes an oscillating wire laser additive manufacturing (O-WLAM), which is based on the wire laser additive manufacturing technology (WLAM) and combined with the laser oscillating welding technology. For different laser oscillation patterns, it shows a trend that metallurgical defects such as porosity, microstructural and columnar grain size decrease with the increase of oscillation frequency and oscillation amplitude. In solidified grains formed under laser oscillation, a complex oscillation of melt pool agitation could lead to a refining effect on the β grains size. The corresponding tendency of epitaxial growth of the prior β grains is weakened as well. The process experiments in this work provide a new idea of laser oscillation for wire laser additive manufacturing. The use of laser oscillation to achieve improvement of metallurgical defects and optimization of microstructure has some guiding significance for wire laser additive manufacturing.http://www.sciencedirect.com/science/article/pii/S2238785423009560Wire laser additive manufacturingLaser oscillatingSolidification microstructureTi–6Al–4V alloy |
| spellingShingle | Guoqing Dai Jin Min Haifei Lu Hui Chang Zhonggang Sun Shuwei Ji Jinzhong Lu Lili Chang Microstructural evolution and performance improvement mechanism of Ti–6Al–4V fabricated by oscillating-wire laser additive manufacturing Journal of Materials Research and Technology Wire laser additive manufacturing Laser oscillating Solidification microstructure Ti–6Al–4V alloy |
| title | Microstructural evolution and performance improvement mechanism of Ti–6Al–4V fabricated by oscillating-wire laser additive manufacturing |
| title_full | Microstructural evolution and performance improvement mechanism of Ti–6Al–4V fabricated by oscillating-wire laser additive manufacturing |
| title_fullStr | Microstructural evolution and performance improvement mechanism of Ti–6Al–4V fabricated by oscillating-wire laser additive manufacturing |
| title_full_unstemmed | Microstructural evolution and performance improvement mechanism of Ti–6Al–4V fabricated by oscillating-wire laser additive manufacturing |
| title_short | Microstructural evolution and performance improvement mechanism of Ti–6Al–4V fabricated by oscillating-wire laser additive manufacturing |
| title_sort | microstructural evolution and performance improvement mechanism of ti 6al 4v fabricated by oscillating wire laser additive manufacturing |
| topic | Wire laser additive manufacturing Laser oscillating Solidification microstructure Ti–6Al–4V alloy |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423009560 |
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