Microstructure analysis of pressure resistance seal welding joint of zirconium alloy tube-plug structure
Pressure resistance welding is usually used to seal the connection between the cladding tube and the end plug made of zirconium alloy. The seal welded joint has a direct effect on the service performance of the fuel rod cladding structure. In this paper, the pressure resistance welded joints of zirc...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-11-01
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| Series: | Nuclear Engineering and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1738573323003406 |
| _version_ | 1797653681982668800 |
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| author | Gang Feng Jian Lin Shuai Yang Boxuan Zhang Jiangang Wang Jia Yang Zhongfeng Xu Yongping Lei |
| author_facet | Gang Feng Jian Lin Shuai Yang Boxuan Zhang Jiangang Wang Jia Yang Zhongfeng Xu Yongping Lei |
| author_sort | Gang Feng |
| collection | DOAJ |
| description | Pressure resistance welding is usually used to seal the connection between the cladding tube and the end plug made of zirconium alloy. The seal welded joint has a direct effect on the service performance of the fuel rod cladding structure. In this paper, the pressure resistance welded joints of zirconium alloy tube-plug structure were obtained by thermal-mechanical simulation experiments. The microstructure and microhardness of the joints were both analyzed. The effect of processing parameters on the microstructure was studied in detail. The results showed that there was no β-Zr phase observed in the joint, and no obvious element segregation. There were different types of Widmanstätten structure in the thermo-mechanically affected zone (TMAZ) and heat affected zone (HAZ) of the cladding tube and the end plug joint because of the low cooling rate. Some part of the grains in the joint grew up due to overheating. Its size was about 2.8 times that of the base metal grains. Due to the high dislocation density and texture evolution, the microhardnesses of TMAZ and HAZ were both significantly higher than that of the base metal, and the microhardness of the TMAZ was the highest. With the increasing of welding temperature, the proportion of recrystallization in TMAZ decreased, which was caused by the increasing of strain rate and dislocation annihilation. |
| first_indexed | 2024-03-11T16:48:08Z |
| format | Article |
| id | doaj.art-48cd6538ab574d9b9e4a1b979ba9d685 |
| institution | Directory Open Access Journal |
| issn | 1738-5733 |
| language | English |
| last_indexed | 2024-03-11T16:48:08Z |
| publishDate | 2023-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj.art-48cd6538ab574d9b9e4a1b979ba9d6852023-10-22T04:48:29ZengElsevierNuclear Engineering and Technology1738-57332023-11-01551140664076Microstructure analysis of pressure resistance seal welding joint of zirconium alloy tube-plug structureGang Feng0Jian Lin1Shuai Yang2Boxuan Zhang3Jiangang Wang4Jia Yang5Zhongfeng Xu6Yongping Lei7Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China; Tianjin Long March Launch Vehicle Manufacturing Co., Ltd, Tianjin, 300462, ChinaFaculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China; Corresponding author.Tianjin Long March Launch Vehicle Manufacturing Co., Ltd, Tianjin, 300462, ChinaTianjin Long March Launch Vehicle Manufacturing Co., Ltd, Tianjin, 300462, ChinaTianjin Long March Launch Vehicle Manufacturing Co., Ltd, Tianjin, 300462, ChinaSuzhou Nuclear Power Research Institute, Suzhou, 215004, ChinaSuzhou Nuclear Power Research Institute, Suzhou, 215004, ChinaFaculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, ChinaPressure resistance welding is usually used to seal the connection between the cladding tube and the end plug made of zirconium alloy. The seal welded joint has a direct effect on the service performance of the fuel rod cladding structure. In this paper, the pressure resistance welded joints of zirconium alloy tube-plug structure were obtained by thermal-mechanical simulation experiments. The microstructure and microhardness of the joints were both analyzed. The effect of processing parameters on the microstructure was studied in detail. The results showed that there was no β-Zr phase observed in the joint, and no obvious element segregation. There were different types of Widmanstätten structure in the thermo-mechanically affected zone (TMAZ) and heat affected zone (HAZ) of the cladding tube and the end plug joint because of the low cooling rate. Some part of the grains in the joint grew up due to overheating. Its size was about 2.8 times that of the base metal grains. Due to the high dislocation density and texture evolution, the microhardnesses of TMAZ and HAZ were both significantly higher than that of the base metal, and the microhardness of the TMAZ was the highest. With the increasing of welding temperature, the proportion of recrystallization in TMAZ decreased, which was caused by the increasing of strain rate and dislocation annihilation.http://www.sciencedirect.com/science/article/pii/S1738573323003406Zirconium alloyPressure resistance weldingTube-plug structureMicrostructureRecrystallization |
| spellingShingle | Gang Feng Jian Lin Shuai Yang Boxuan Zhang Jiangang Wang Jia Yang Zhongfeng Xu Yongping Lei Microstructure analysis of pressure resistance seal welding joint of zirconium alloy tube-plug structure Nuclear Engineering and Technology Zirconium alloy Pressure resistance welding Tube-plug structure Microstructure Recrystallization |
| title | Microstructure analysis of pressure resistance seal welding joint of zirconium alloy tube-plug structure |
| title_full | Microstructure analysis of pressure resistance seal welding joint of zirconium alloy tube-plug structure |
| title_fullStr | Microstructure analysis of pressure resistance seal welding joint of zirconium alloy tube-plug structure |
| title_full_unstemmed | Microstructure analysis of pressure resistance seal welding joint of zirconium alloy tube-plug structure |
| title_short | Microstructure analysis of pressure resistance seal welding joint of zirconium alloy tube-plug structure |
| title_sort | microstructure analysis of pressure resistance seal welding joint of zirconium alloy tube plug structure |
| topic | Zirconium alloy Pressure resistance welding Tube-plug structure Microstructure Recrystallization |
| url | http://www.sciencedirect.com/science/article/pii/S1738573323003406 |
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