Formation optimization of downward overlaid Inconel 625 on curved surface of X65 pipeline basing on dynamic behavior of molten pool
In practical engineering, overlaying on curved surfaces with constantly changing gravity components usually leads to various defects. In this study, Inconel 625 was downward overlaid on curved surface by cold metal transfer (CMT) process with varied heat input, and the dynamic behavior of the molten...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423016113 |
| _version_ | 1797745222738771968 |
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| author | Zhaowei Xue Lianyong Xu Zhe Chen Youhui Sun Lei Zhao Kangda Hao Yongdian Han |
| author_facet | Zhaowei Xue Lianyong Xu Zhe Chen Youhui Sun Lei Zhao Kangda Hao Yongdian Han |
| author_sort | Zhaowei Xue |
| collection | DOAJ |
| description | In practical engineering, overlaying on curved surfaces with constantly changing gravity components usually leads to various defects. In this study, Inconel 625 was downward overlaid on curved surface by cold metal transfer (CMT) process with varied heat input, and the dynamic behavior of the molten pool was observed by high speed camera. At high heat input (0.422 kJ/mm and 0.372 kJ/mm), the volume of the molten pool continued to expand due to the downward flow of the liquid, ultimately leading to overflow or instability defects. In contrast, low heat input (0.230 kJ/mm) will make the molten pool shrink during overlaying, which was attributed to the continuously weakened gravity, the relative position between the heat source and the molten pool was then changed. A well-formed and defect-free weld overlay was obtained at optimized heat input 0.230–0.280 kJ/mm. Compared with gas tungsten arc welding (GTAW) process, the weld overlay obtained employing CMT process has the largest thickness and the most uniform fusion line, while the content of Fe element was less than 0.5%. It was confirmed that CMT technology has great potential for overlaying on curved surface. |
| first_indexed | 2024-03-12T15:20:17Z |
| format | Article |
| id | doaj.art-d7641b44f8a14b5f9741429a2b372811 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-12T15:20:17Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-d7641b44f8a14b5f9741429a2b3728112023-08-11T05:34:28ZengElsevierJournal of Materials Research and Technology2238-78542023-07-012563566368Formation optimization of downward overlaid Inconel 625 on curved surface of X65 pipeline basing on dynamic behavior of molten poolZhaowei Xue0Lianyong Xu1Zhe Chen2Youhui Sun3Lei Zhao4Kangda Hao5Yongdian Han6School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China; Tianjin Key Laboratory of Advanced Joining Technology, Tianjin 300350, ChinaSchool of Materials Science and Engineering, Tianjin University, Tianjin 300350, China; Tianjin Key Laboratory of Advanced Joining Technology, Tianjin 300350, ChinaOffshore Oil Engineering (Qingdao) Co., Ltd., Qingdao 266520, ChinaOffshore Oil Engineering Co., Ltd, Tianjin 300461, ChinaSchool of Materials Science and Engineering, Tianjin University, Tianjin 300350, China; Tianjin Key Laboratory of Advanced Joining Technology, Tianjin 300350, ChinaSchool of Materials Science and Engineering, Tianjin University, Tianjin 300350, China; Tianjin Key Laboratory of Advanced Joining Technology, Tianjin 300350, China; Corresponding author. Tianjin Key Laboratory of Advanced Joining Technology, Tianjin 300350, China.School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China; Tianjin Key Laboratory of Advanced Joining Technology, Tianjin 300350, China; Corresponding author. School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China.In practical engineering, overlaying on curved surfaces with constantly changing gravity components usually leads to various defects. In this study, Inconel 625 was downward overlaid on curved surface by cold metal transfer (CMT) process with varied heat input, and the dynamic behavior of the molten pool was observed by high speed camera. At high heat input (0.422 kJ/mm and 0.372 kJ/mm), the volume of the molten pool continued to expand due to the downward flow of the liquid, ultimately leading to overflow or instability defects. In contrast, low heat input (0.230 kJ/mm) will make the molten pool shrink during overlaying, which was attributed to the continuously weakened gravity, the relative position between the heat source and the molten pool was then changed. A well-formed and defect-free weld overlay was obtained at optimized heat input 0.230–0.280 kJ/mm. Compared with gas tungsten arc welding (GTAW) process, the weld overlay obtained employing CMT process has the largest thickness and the most uniform fusion line, while the content of Fe element was less than 0.5%. It was confirmed that CMT technology has great potential for overlaying on curved surface.http://www.sciencedirect.com/science/article/pii/S2238785423016113CMTDownward overlayCurved surfaceMolten poolMorphologiesFe content |
| spellingShingle | Zhaowei Xue Lianyong Xu Zhe Chen Youhui Sun Lei Zhao Kangda Hao Yongdian Han Formation optimization of downward overlaid Inconel 625 on curved surface of X65 pipeline basing on dynamic behavior of molten pool Journal of Materials Research and Technology CMT Downward overlay Curved surface Molten pool Morphologies Fe content |
| title | Formation optimization of downward overlaid Inconel 625 on curved surface of X65 pipeline basing on dynamic behavior of molten pool |
| title_full | Formation optimization of downward overlaid Inconel 625 on curved surface of X65 pipeline basing on dynamic behavior of molten pool |
| title_fullStr | Formation optimization of downward overlaid Inconel 625 on curved surface of X65 pipeline basing on dynamic behavior of molten pool |
| title_full_unstemmed | Formation optimization of downward overlaid Inconel 625 on curved surface of X65 pipeline basing on dynamic behavior of molten pool |
| title_short | Formation optimization of downward overlaid Inconel 625 on curved surface of X65 pipeline basing on dynamic behavior of molten pool |
| title_sort | formation optimization of downward overlaid inconel 625 on curved surface of x65 pipeline basing on dynamic behavior of molten pool |
| topic | CMT Downward overlay Curved surface Molten pool Morphologies Fe content |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423016113 |
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