Effect of heat input on the microstructure and performance of dissimilar welded joint between Q345B low-alloy steel and 2205 duplex stainless steel
Q345B/2205 dissimilar steel multi-layer multi-pass welded joints were prepared using gas metal arc welding (GMAW). The effects of heat inputs on the microstructures and properties of welded joints were studied. The morphology and composition distribution of Q345B base metal near the fusion line were...
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2024-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424024359 |
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| author | Guangnan Ge Jin Hu Yan Huo Shawei Tang Yi Liu Jing Li Caimeng Qi Hailong Wu Wei Wang |
| author_facet | Guangnan Ge Jin Hu Yan Huo Shawei Tang Yi Liu Jing Li Caimeng Qi Hailong Wu Wei Wang |
| author_sort | Guangnan Ge |
| collection | DOAJ |
| description | Q345B/2205 dissimilar steel multi-layer multi-pass welded joints were prepared using gas metal arc welding (GMAW). The effects of heat inputs on the microstructures and properties of welded joints were studied. The morphology and composition distribution of Q345B base metal near the fusion line were investigated. The results showed that the welded joints under different heat inputs were all present “carbon depleted zone” and “carburized zones” on both sides of the Q345B base metal and transition layer interface. The microstructure of the “carburized zones” was composed of martensite phase and granular bainite phase. It was found that only the welded joints with heat inputs of 1.765 kJ/mm and 2.860 kJ/mm met the usage requirements. The corrosion behavior and characteristics of the welded joint with a heat input of 1.765 kJ/mm in a 3.5 wt % NaCl solution were investigated intensively. During the soaked process of 14 days, the total impedance value of the welded joint showed first increasing and then decreasing. The maximum value of 8.7 kΩ cm2 was obtained on the 5th day. As the soaked time increased, the corrosion products of the welded joint underwent the formation, thickening, cracking and detachment, which was the main reason of the change in the corrosion resistance. The research results of this article have significant implications for the application of low-alloy steel and stainless steel welded joints in engineering. |
| format | Article |
| id | doaj-art-e0e561679f464c2c96d69edf36d23724 |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-e0e561679f464c2c96d69edf36d237242025-08-20T02:39:03ZengElsevierJournal of Materials Research and Technology2238-78542024-11-01334858487410.1016/j.jmrt.2024.10.165Effect of heat input on the microstructure and performance of dissimilar welded joint between Q345B low-alloy steel and 2205 duplex stainless steelGuangnan Ge0Jin Hu1Yan Huo2Shawei Tang3Yi Liu4Jing Li5Caimeng Qi6Hailong Wu7Wei Wang8Department of Materials Science and Engineering, Harbin Institute of Technology, 150001, Harbin, China; State Key Laboratory of Hydro-Power Equipment, 150040, Harbin, China; Harbin Institute of Large Electric Machinery Company Limited, 150040, Harbin, ChinaDepartment of Materials Science and Engineering, Harbin Institute of Technology, 150001, Harbin, China; Corresponding author.State Key Laboratory of Hydro-Power Equipment, 150040, Harbin, China; Harbin Electric Machinery Company Limited, 150040, Harbin, ChinaDepartment of Materials Science and Engineering, Harbin Institute of Technology, 150001, Harbin, China; Corresponding author.State Key Laboratory of Hydro-Power Equipment, 150040, Harbin, China; Harbin Institute of Large Electric Machinery Company Limited, 150040, Harbin, ChinaHarbin Electric Machinery Company Limited, 150040, Harbin, ChinaState Key Laboratory of Hydro-Power Equipment, 150040, Harbin, China; Harbin Institute of Large Electric Machinery Company Limited, 150040, Harbin, ChinaHarbin Electric Machinery Company Limited, 150040, Harbin, ChinaOcean University of China, 266100, Qingdao, ChinaQ345B/2205 dissimilar steel multi-layer multi-pass welded joints were prepared using gas metal arc welding (GMAW). The effects of heat inputs on the microstructures and properties of welded joints were studied. The morphology and composition distribution of Q345B base metal near the fusion line were investigated. The results showed that the welded joints under different heat inputs were all present “carbon depleted zone” and “carburized zones” on both sides of the Q345B base metal and transition layer interface. The microstructure of the “carburized zones” was composed of martensite phase and granular bainite phase. It was found that only the welded joints with heat inputs of 1.765 kJ/mm and 2.860 kJ/mm met the usage requirements. The corrosion behavior and characteristics of the welded joint with a heat input of 1.765 kJ/mm in a 3.5 wt % NaCl solution were investigated intensively. During the soaked process of 14 days, the total impedance value of the welded joint showed first increasing and then decreasing. The maximum value of 8.7 kΩ cm2 was obtained on the 5th day. As the soaked time increased, the corrosion products of the welded joint underwent the formation, thickening, cracking and detachment, which was the main reason of the change in the corrosion resistance. The research results of this article have significant implications for the application of low-alloy steel and stainless steel welded joints in engineering.http://www.sciencedirect.com/science/article/pii/S2238785424024359Dissimilar steelWelded jointMicrostructureCorrosion behaviorHeat input |
| spellingShingle | Guangnan Ge Jin Hu Yan Huo Shawei Tang Yi Liu Jing Li Caimeng Qi Hailong Wu Wei Wang Effect of heat input on the microstructure and performance of dissimilar welded joint between Q345B low-alloy steel and 2205 duplex stainless steel Journal of Materials Research and Technology Dissimilar steel Welded joint Microstructure Corrosion behavior Heat input |
| title | Effect of heat input on the microstructure and performance of dissimilar welded joint between Q345B low-alloy steel and 2205 duplex stainless steel |
| title_full | Effect of heat input on the microstructure and performance of dissimilar welded joint between Q345B low-alloy steel and 2205 duplex stainless steel |
| title_fullStr | Effect of heat input on the microstructure and performance of dissimilar welded joint between Q345B low-alloy steel and 2205 duplex stainless steel |
| title_full_unstemmed | Effect of heat input on the microstructure and performance of dissimilar welded joint between Q345B low-alloy steel and 2205 duplex stainless steel |
| title_short | Effect of heat input on the microstructure and performance of dissimilar welded joint between Q345B low-alloy steel and 2205 duplex stainless steel |
| title_sort | effect of heat input on the microstructure and performance of dissimilar welded joint between q345b low alloy steel and 2205 duplex stainless steel |
| topic | Dissimilar steel Welded joint Microstructure Corrosion behavior Heat input |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424024359 |
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