Effect of laser fusion repair on the microstructure and properties of stainless steel laser welds
In this paper, the stainless steel laser welding defect weld with 1 mm + 0.6 mm plate thickness combination is taken as the research object, and a new laser secondary remelting repair technology is developed. The technique can effectively repair the surface collapse defect in laser weld. At the same...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-01-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422019895 |
| _version_ | 1797943008848510976 |
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| author | Yu Zhang Xin Li Yanxin Wang Lei Kang Ting Wang Feng Qiu |
| author_facet | Yu Zhang Xin Li Yanxin Wang Lei Kang Ting Wang Feng Qiu |
| author_sort | Yu Zhang |
| collection | DOAJ |
| description | In this paper, the stainless steel laser welding defect weld with 1 mm + 0.6 mm plate thickness combination is taken as the research object, and a new laser secondary remelting repair technology is developed. The technique can effectively repair the surface collapse defect in laser weld. At the same time, due of the recrystallization of laser secondary fusion, the microstructure of the repaired weld is refined, the residual stress is decreased, and the fatigue performance is improved. When the fatigue life is 106, the fatigue strength of the repaired weld is approximately 1.6 times that of the gap-free weld. This study provides a reliable data basis for the feasibility of laser fusion repair process, gives a scientific and reasonable explanation from the repair mechanism, and provides basic data and theoretical basis for the application of this technology in the laser weld repair of stainless steel car body. |
| first_indexed | 2024-04-10T20:17:04Z |
| format | Article |
| id | doaj.art-40de6276ea394f8f914bbacb4ab8dedd |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-10T20:17:04Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-40de6276ea394f8f914bbacb4ab8dedd2023-01-26T04:46:26ZengElsevierJournal of Materials Research and Technology2238-78542023-01-012227812791Effect of laser fusion repair on the microstructure and properties of stainless steel laser weldsYu Zhang0Xin Li1Yanxin Wang2Lei Kang3Ting Wang4Feng Qiu5Key Laboratory of Automobile Materials, School of Materials Science and Engineering, Jilin University, Changchun, 130025, ChinaKey Laboratory of Automobile Materials, School of Materials Science and Engineering, Jilin University, Changchun, 130025, China; Corresponding author.CRRC Changchun Railway Vehicles Co., Ltd., Changchun 130021, ChinaKey Laboratory of Automobile Materials, School of Materials Science and Engineering, Jilin University, Changchun, 130025, ChinaKey Laboratory of Automobile Materials, School of Materials Science and Engineering, Jilin University, Changchun, 130025, ChinaKey Laboratory of Automobile Materials, School of Materials Science and Engineering, Jilin University, Changchun, 130025, China; Corresponding author.In this paper, the stainless steel laser welding defect weld with 1 mm + 0.6 mm plate thickness combination is taken as the research object, and a new laser secondary remelting repair technology is developed. The technique can effectively repair the surface collapse defect in laser weld. At the same time, due of the recrystallization of laser secondary fusion, the microstructure of the repaired weld is refined, the residual stress is decreased, and the fatigue performance is improved. When the fatigue life is 106, the fatigue strength of the repaired weld is approximately 1.6 times that of the gap-free weld. This study provides a reliable data basis for the feasibility of laser fusion repair process, gives a scientific and reasonable explanation from the repair mechanism, and provides basic data and theoretical basis for the application of this technology in the laser weld repair of stainless steel car body.http://www.sciencedirect.com/science/article/pii/S2238785422019895Stainless steelLaser weldingRepair weldGrain refinement |
| spellingShingle | Yu Zhang Xin Li Yanxin Wang Lei Kang Ting Wang Feng Qiu Effect of laser fusion repair on the microstructure and properties of stainless steel laser welds Journal of Materials Research and Technology Stainless steel Laser welding Repair weld Grain refinement |
| title | Effect of laser fusion repair on the microstructure and properties of stainless steel laser welds |
| title_full | Effect of laser fusion repair on the microstructure and properties of stainless steel laser welds |
| title_fullStr | Effect of laser fusion repair on the microstructure and properties of stainless steel laser welds |
| title_full_unstemmed | Effect of laser fusion repair on the microstructure and properties of stainless steel laser welds |
| title_short | Effect of laser fusion repair on the microstructure and properties of stainless steel laser welds |
| title_sort | effect of laser fusion repair on the microstructure and properties of stainless steel laser welds |
| topic | Stainless steel Laser welding Repair weld Grain refinement |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422019895 |
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