Understanding the roles of interdendritic bridging on hot tearing formation during alloy solidification
Dendritic bridging plays a key role in hot tearing formation and crack propagation, but it has yet to be clearly understood. This article describes the formation process of interdendritic bridging and its effect on the propagation of hot tearing. Two types of interdendritic bridging are proposed: me...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-11-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423027631 |
| _version_ | 1797301451089772544 |
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| author | Honggang Zhong Yu Zhao Zenghuang Lin Tianyu Li Qingtao Guo Lijuan Li Qijie Zhai Qingyou Han |
| author_facet | Honggang Zhong Yu Zhao Zenghuang Lin Tianyu Li Qingtao Guo Lijuan Li Qijie Zhai Qingyou Han |
| author_sort | Honggang Zhong |
| collection | DOAJ |
| description | Dendritic bridging plays a key role in hot tearing formation and crack propagation, but it has yet to be clearly understood. This article describes the formation process of interdendritic bridging and its effect on the propagation of hot tearing. Two types of interdendritic bridging are proposed: mechanical bridging where dendrites are in contact with each other but are connected only by the surface tension of liquid film and metallurgical bridging where dendrites are metallurgically bonded at their contact points. Mechanical bridging cannot effectively impede crack propagation, thus exhibiting a brittle fracture characteristic, while metallurgical bridging can hinder crack propagation, resulting in a ductile fracture characteristic. Experiments on a high manganese steel were carried out to provide evidence of these two types of bridging and illustrate unique features on fractured surface that are associated with these two types of bridging. In this paper, the process of dendritic bridge formation is clearly described and its effect on hot tearing propagation is discussed. |
| first_indexed | 2024-03-07T23:22:45Z |
| format | Article |
| id | doaj.art-54896caf8e544bb49007fa24d00b5c59 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-07T23:22:45Z |
| publishDate | 2023-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-54896caf8e544bb49007fa24d00b5c592024-02-21T05:27:21ZengElsevierJournal of Materials Research and Technology2238-78542023-11-012753685371Understanding the roles of interdendritic bridging on hot tearing formation during alloy solidificationHonggang Zhong0Yu Zhao1Zenghuang Lin2Tianyu Li3Qingtao Guo4Lijuan Li5Qijie Zhai6Qingyou Han7Center for Advanced Solidification Technology, Shanghai University, Shanghai, 200072, China; Corresponding author.Center for Advanced Solidification Technology, Shanghai University, Shanghai, 200072, ChinaCenter for Advanced Solidification Technology, Shanghai University, Shanghai, 200072, ChinaCenter for Advanced Solidification Technology, Shanghai University, Shanghai, 200072, ChinaAnsteel Beijing Research Institute Co., Ltd, 102211, Beijing, ChinaCenter for Advanced Solidification Technology, Shanghai University, Shanghai, 200072, ChinaCenter for Advanced Solidification Technology, Shanghai University, Shanghai, 200072, ChinaSchool of Mechanical Engineering, Southeast University, Nanjing, 211189, China; Corresponding author.Dendritic bridging plays a key role in hot tearing formation and crack propagation, but it has yet to be clearly understood. This article describes the formation process of interdendritic bridging and its effect on the propagation of hot tearing. Two types of interdendritic bridging are proposed: mechanical bridging where dendrites are in contact with each other but are connected only by the surface tension of liquid film and metallurgical bridging where dendrites are metallurgically bonded at their contact points. Mechanical bridging cannot effectively impede crack propagation, thus exhibiting a brittle fracture characteristic, while metallurgical bridging can hinder crack propagation, resulting in a ductile fracture characteristic. Experiments on a high manganese steel were carried out to provide evidence of these two types of bridging and illustrate unique features on fractured surface that are associated with these two types of bridging. In this paper, the process of dendritic bridge formation is clearly described and its effect on hot tearing propagation is discussed.http://www.sciencedirect.com/science/article/pii/S2238785423027631Hot tearingSolidificationDendritic growthMechanical bridgingMetallurgical bridging |
| spellingShingle | Honggang Zhong Yu Zhao Zenghuang Lin Tianyu Li Qingtao Guo Lijuan Li Qijie Zhai Qingyou Han Understanding the roles of interdendritic bridging on hot tearing formation during alloy solidification Journal of Materials Research and Technology Hot tearing Solidification Dendritic growth Mechanical bridging Metallurgical bridging |
| title | Understanding the roles of interdendritic bridging on hot tearing formation during alloy solidification |
| title_full | Understanding the roles of interdendritic bridging on hot tearing formation during alloy solidification |
| title_fullStr | Understanding the roles of interdendritic bridging on hot tearing formation during alloy solidification |
| title_full_unstemmed | Understanding the roles of interdendritic bridging on hot tearing formation during alloy solidification |
| title_short | Understanding the roles of interdendritic bridging on hot tearing formation during alloy solidification |
| title_sort | understanding the roles of interdendritic bridging on hot tearing formation during alloy solidification |
| topic | Hot tearing Solidification Dendritic growth Mechanical bridging Metallurgical bridging |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423027631 |
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