Rapid solidification structure refinement mechanism in highly undercooled Cu based ternary alloys
Applying cycle superheating and molten glass purification technologies, Cu60Ni35Co5 alloys were deeply undercooled to maximum undercoolings of 284 K. The microstructure characteristics and its evolution varying with bulk undercooling during the rapidly solidified process were analyzed. It was found...
| Published in: | Journal of Materials Research and Technology |
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| Main Authors: | , , , , |
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-05-01
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| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423008712 |
| _version_ | 1851947516425142272 |
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| author | Xiaolong Xu Qi Wu Yongchao Hao Yuhong Zhao Hua Hou |
| author_facet | Xiaolong Xu Qi Wu Yongchao Hao Yuhong Zhao Hua Hou |
| author_sort | Xiaolong Xu |
| collection | DOAJ |
| container_title | Journal of Materials Research and Technology |
| description | Applying cycle superheating and molten glass purification technologies, Cu60Ni35Co5 alloys were deeply undercooled to maximum undercoolings of 284 K. The microstructure characteristics and its evolution varying with bulk undercooling during the rapidly solidified process were analyzed. It was found that, after minor addition of element Co, crystal refinement mechanisms of the undercooled Cu60Ni35Co5 system was similar to those of the Cu–Ni sytem. Crystal refined microstructure appearing at the low undercoolings was result of dendrite remelting mechanism; the dominant factor of grain refinement microstructure appearing at high undercooling regime was resultant from the recrystallization process. Driving force of stress induced strain energy for recrystallization could be divided into two parts, one was the thermal stress generated by the solidification latent releasing in the recalescence process, and the other was accumulated stress and plastic strain resultant from interaction between primary dendrite and liquid flow driven by rapid solidification. |
| format | Article |
| id | doaj-art-e19df4e1fc544b00bc5f359352e3ccec |
| institution | Directory of Open Access Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| spelling | doaj-art-e19df4e1fc544b00bc5f359352e3ccec2025-08-19T21:47:58ZengElsevierJournal of Materials Research and Technology2238-78542023-05-01245501551310.1016/j.jmrt.2023.04.177Rapid solidification structure refinement mechanism in highly undercooled Cu based ternary alloysXiaolong Xu0Qi Wu1Yongchao Hao2Yuhong Zhao3Hua Hou4College of Materials Science and Engineering, North University of China, Taiyuan, 030051, China; State Key Laboratory of Solidifification Processing, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, People's Republic of China; Corresponding author.College of Materials Science and Engineering, North University of China, Taiyuan, 030051, ChinaCollege of Materials Science and Engineering, North University of China, Taiyuan, 030051, ChinaCollege of Materials Science and Engineering, North University of China, Taiyuan, 030051, China; Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 10083, China; State Key Laboratory of Solidifification Processing, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, People's Republic of China; Corresponding author.College of Materials Science and Engineering, North University of China, Taiyuan, 030051, China; College of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, 030024, China; State Key Laboratory of Solidifification Processing, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, People's Republic of China; Corresponding author.Applying cycle superheating and molten glass purification technologies, Cu60Ni35Co5 alloys were deeply undercooled to maximum undercoolings of 284 K. The microstructure characteristics and its evolution varying with bulk undercooling during the rapidly solidified process were analyzed. It was found that, after minor addition of element Co, crystal refinement mechanisms of the undercooled Cu60Ni35Co5 system was similar to those of the Cu–Ni sytem. Crystal refined microstructure appearing at the low undercoolings was result of dendrite remelting mechanism; the dominant factor of grain refinement microstructure appearing at high undercooling regime was resultant from the recrystallization process. Driving force of stress induced strain energy for recrystallization could be divided into two parts, one was the thermal stress generated by the solidification latent releasing in the recalescence process, and the other was accumulated stress and plastic strain resultant from interaction between primary dendrite and liquid flow driven by rapid solidification.http://www.sciencedirect.com/science/article/pii/S2238785423008712UndercoolingGrain refined microstructureRapid solidificationRecrystallization |
| spellingShingle | Xiaolong Xu Qi Wu Yongchao Hao Yuhong Zhao Hua Hou Rapid solidification structure refinement mechanism in highly undercooled Cu based ternary alloys Undercooling Grain refined microstructure Rapid solidification Recrystallization |
| title | Rapid solidification structure refinement mechanism in highly undercooled Cu based ternary alloys |
| title_full | Rapid solidification structure refinement mechanism in highly undercooled Cu based ternary alloys |
| title_fullStr | Rapid solidification structure refinement mechanism in highly undercooled Cu based ternary alloys |
| title_full_unstemmed | Rapid solidification structure refinement mechanism in highly undercooled Cu based ternary alloys |
| title_short | Rapid solidification structure refinement mechanism in highly undercooled Cu based ternary alloys |
| title_sort | rapid solidification structure refinement mechanism in highly undercooled cu based ternary alloys |
| topic | Undercooling Grain refined microstructure Rapid solidification Recrystallization |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423008712 |
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