Effects of Welding Heat Input on Microstructure and Corrosion Characterization in CGHAZ of X80 Pipeline Steel
The coarse-grained heat-affected zone specimens of X80 pipeline steel were produced by welding thermal simulation under different heat inputs of 10, 30, and 55 kJ/cm to study the effects of heat input on microstructure evolution and corrosion characterization. The corrosion resistance of coarse-grai...
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2023-06-01
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| Series: | Archives of Metallurgy and Materials |
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| Online Access: | https://journals.pan.pl/Content/127404/PDF/AMM-2023-2-31-Zhao.pdf |
| _version_ | 1797810365680058368 |
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| author | Xue-Mei Wang Wei Zhao Kai Chen Zhen Li |
| author_facet | Xue-Mei Wang Wei Zhao Kai Chen Zhen Li |
| author_sort | Xue-Mei Wang |
| collection | DOAJ |
| description | The coarse-grained heat-affected zone specimens of X80 pipeline steel were produced by welding thermal simulation under different heat inputs of 10, 30, and 55 kJ/cm to study the effects of heat input on microstructure evolution and corrosion characterization. The corrosion resistance of coarse-grained heat-affected zones was poorer than that of base metal due to less homogenous in the former. For 10 kJ/cm coarse-grained heat-affected zone, the corrosion resistance was poorer than the others due to the more adsorption hydrogen around the needle-like martensite/austenite constituents and greater galvanic driving force between the needle-like martensite/austenite constituents and ferrite. In carbonate/bicarbonate solution, better corrosion resistance for coarse-grained heat-affected zones was obtained when the heat input is 30 kJ/cm, which can be attributed to the severe coarse martensite/austenite constituents for 55 kJ/cm coarse-grained heat-affected zone. In the H2S environment, the better corrosion resistance for coarse-grained heat-affected zone was obtained when the heat input is 55 kJ/cm, which can be attributed to the protective effect of corrosion products. In addition, the high content of M/A constituents for 30 kJ/cm CGHAZ was good for hydrogen adsorption, which was adverse to the corrosion resistance in acid environments. |
| first_indexed | 2024-03-13T07:06:41Z |
| format | Article |
| id | doaj.art-8c17df7a3ac24e0d94ce3021c43376cb |
| institution | Directory Open Access Journal |
| issn | 2300-1909 |
| language | English |
| last_indexed | 2024-03-13T07:06:41Z |
| publishDate | 2023-06-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Metallurgy and Materials |
| spelling | doaj.art-8c17df7a3ac24e0d94ce3021c43376cb2023-06-06T08:16:18ZengPolish Academy of SciencesArchives of Metallurgy and Materials2300-19092023-06-01vol. 68No 2659671https://doi.org/10.24425/amm.2023.142447Effects of Welding Heat Input on Microstructure and Corrosion Characterization in CGHAZ of X80 Pipeline SteelXue-Mei Wang0https://orcid.org/0000-0002-9463-7453Wei Zhao1https://orcid.org/0000-0002-1713-3120Kai Chen2https://orcid.org/0000-0002-6599-4195Zhen Li3https://orcid.org/0000-0002-0855-4599Qilu University of Technology (Shandong Academy of Sciences), School of Mechanical & Automotive Engineering, ChinaQilu University of Technology (Shandong Academy of Sciences), School of Mechanical & Automotive Engineering, ChinaQilu University of Technology (Shandong Academy of Sciences), School of Mechanical & Automotive Engineering, ChinaQilu University of Technology (Shandong Academy of Sciences), School of Mechanical & Automotive Engineering, ChinaThe coarse-grained heat-affected zone specimens of X80 pipeline steel were produced by welding thermal simulation under different heat inputs of 10, 30, and 55 kJ/cm to study the effects of heat input on microstructure evolution and corrosion characterization. The corrosion resistance of coarse-grained heat-affected zones was poorer than that of base metal due to less homogenous in the former. For 10 kJ/cm coarse-grained heat-affected zone, the corrosion resistance was poorer than the others due to the more adsorption hydrogen around the needle-like martensite/austenite constituents and greater galvanic driving force between the needle-like martensite/austenite constituents and ferrite. In carbonate/bicarbonate solution, better corrosion resistance for coarse-grained heat-affected zones was obtained when the heat input is 30 kJ/cm, which can be attributed to the severe coarse martensite/austenite constituents for 55 kJ/cm coarse-grained heat-affected zone. In the H2S environment, the better corrosion resistance for coarse-grained heat-affected zone was obtained when the heat input is 55 kJ/cm, which can be attributed to the protective effect of corrosion products. In addition, the high content of M/A constituents for 30 kJ/cm CGHAZ was good for hydrogen adsorption, which was adverse to the corrosion resistance in acid environments.https://journals.pan.pl/Content/127404/PDF/AMM-2023-2-31-Zhao.pdfx80 pipeline steelcoarse grain heat-affected zoneheat inputcorrosion |
| spellingShingle | Xue-Mei Wang Wei Zhao Kai Chen Zhen Li Effects of Welding Heat Input on Microstructure and Corrosion Characterization in CGHAZ of X80 Pipeline Steel Archives of Metallurgy and Materials x80 pipeline steel coarse grain heat-affected zone heat input corrosion |
| title | Effects of Welding Heat Input on Microstructure and Corrosion Characterization in CGHAZ of X80 Pipeline Steel |
| title_full | Effects of Welding Heat Input on Microstructure and Corrosion Characterization in CGHAZ of X80 Pipeline Steel |
| title_fullStr | Effects of Welding Heat Input on Microstructure and Corrosion Characterization in CGHAZ of X80 Pipeline Steel |
| title_full_unstemmed | Effects of Welding Heat Input on Microstructure and Corrosion Characterization in CGHAZ of X80 Pipeline Steel |
| title_short | Effects of Welding Heat Input on Microstructure and Corrosion Characterization in CGHAZ of X80 Pipeline Steel |
| title_sort | effects of welding heat input on microstructure and corrosion characterization in cghaz of x80 pipeline steel |
| topic | x80 pipeline steel coarse grain heat-affected zone heat input corrosion |
| url | https://journals.pan.pl/Content/127404/PDF/AMM-2023-2-31-Zhao.pdf |
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