Desulfovibrio desulfuricans induced corrosion of welded joint in X80 pipeline steel below delaminated coating

Buried pipelines are an important tool for long-distance oil and gas transportation. Welded joints are the weak components of buried pipelines. Interestingly, the biocorrosion degree of the heat affected zone (HAZ) of the welded joint is the lowest in mediums. However, there is no report on the bioc...

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Main Authors: Ma, Qiao, Wang, Qin, Zhou, Xiaobao, Liu, Meng, Wu, Tangqing, Dong, Zhili
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2024
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Online Access:https://hdl.handle.net/10356/173266
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1732662024-01-22T07:00:16Z Desulfovibrio desulfuricans induced corrosion of welded joint in X80 pipeline steel below delaminated coating Ma, Qiao Wang, Qin Zhou, Xiaobao Liu, Meng Wu, Tangqing Dong, Zhili School of Materials Science and Engineering Engineering::Materials X80 Steel Welded Joint Sulfate-Reducing Bacteria Buried pipelines are an important tool for long-distance oil and gas transportation. Welded joints are the weak components of buried pipelines. Interestingly, the biocorrosion degree of the heat affected zone (HAZ) of the welded joint is the lowest in mediums. However, there is no report on the biocorrosion of the welded joints when the protective coating is delaminated. In this paper, sulfate-reducing bacteria (SRB) corrosion of X80 steel welded joint was studied below delaminated coating. Results showed that SRB corrosion of the welded joint was selective at the opening of the delaminated coating, and such selected SRB corrosion gradually faded along the direction from the opening to the far end. At the far end below the delaminated coating, the corrosion of the welded joint was related more to its microstructural characteristics rather than to the SRB metabolism process. The concentration decrease of the SRB cells was responsible for the gradual decrease of the SRB corrosion of the welded joint below the delaminated coating. We are grateful for financial supports of National Natural Science Foundation of China (51971191), Scientific Research Project of Education Department of Hunan Province (22B0178), Hunan Provincial Innovation Foundation for Postgraduate (CX20220558) and Youth Backbone Teacher Training Program of Henan Province (2021GGJS004). 2024-01-22T07:00:16Z 2024-01-22T07:00:16Z 2024 Journal Article Ma, Q., Wang, Q., Zhou, X., Liu, M., Wu, T. & Dong, Z. (2024). Desulfovibrio desulfuricans induced corrosion of welded joint in X80 pipeline steel below delaminated coating. Construction and Building Materials, 411, 134335-. https://dx.doi.org/10.1016/j.conbuildmat.2023.134335 0950-0618 https://hdl.handle.net/10356/173266 10.1016/j.conbuildmat.2023.134335 2-s2.0-85178124165 411 134335 en Construction and Building Materials © 2023 Elsevier Ltd. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Materials
X80 Steel Welded Joint
Sulfate-Reducing Bacteria
spellingShingle Engineering::Materials
X80 Steel Welded Joint
Sulfate-Reducing Bacteria
Ma, Qiao
Wang, Qin
Zhou, Xiaobao
Liu, Meng
Wu, Tangqing
Dong, Zhili
Desulfovibrio desulfuricans induced corrosion of welded joint in X80 pipeline steel below delaminated coating
description Buried pipelines are an important tool for long-distance oil and gas transportation. Welded joints are the weak components of buried pipelines. Interestingly, the biocorrosion degree of the heat affected zone (HAZ) of the welded joint is the lowest in mediums. However, there is no report on the biocorrosion of the welded joints when the protective coating is delaminated. In this paper, sulfate-reducing bacteria (SRB) corrosion of X80 steel welded joint was studied below delaminated coating. Results showed that SRB corrosion of the welded joint was selective at the opening of the delaminated coating, and such selected SRB corrosion gradually faded along the direction from the opening to the far end. At the far end below the delaminated coating, the corrosion of the welded joint was related more to its microstructural characteristics rather than to the SRB metabolism process. The concentration decrease of the SRB cells was responsible for the gradual decrease of the SRB corrosion of the welded joint below the delaminated coating.
author2 School of Materials Science and Engineering
author_facet School of Materials Science and Engineering
Ma, Qiao
Wang, Qin
Zhou, Xiaobao
Liu, Meng
Wu, Tangqing
Dong, Zhili
format Article
author Ma, Qiao
Wang, Qin
Zhou, Xiaobao
Liu, Meng
Wu, Tangqing
Dong, Zhili
author_sort Ma, Qiao
title Desulfovibrio desulfuricans induced corrosion of welded joint in X80 pipeline steel below delaminated coating
title_short Desulfovibrio desulfuricans induced corrosion of welded joint in X80 pipeline steel below delaminated coating
title_full Desulfovibrio desulfuricans induced corrosion of welded joint in X80 pipeline steel below delaminated coating
title_fullStr Desulfovibrio desulfuricans induced corrosion of welded joint in X80 pipeline steel below delaminated coating
title_full_unstemmed Desulfovibrio desulfuricans induced corrosion of welded joint in X80 pipeline steel below delaminated coating
title_sort desulfovibrio desulfuricans induced corrosion of welded joint in x80 pipeline steel below delaminated coating
publishDate 2024
url https://hdl.handle.net/10356/173266
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