Insight into sulfate-reducing bacteria corrosion behavior of X80 pipeline steel welded joint in a soil solution

Mengdi Yan; Boxin Wei; Jin Xu; Yuan Li; Yong Hu; Zheng Cai; Cheng Sun

Journal of Materials Research and Technology (May 2023)

Insight into sulfate-reducing bacteria corrosion behavior of X80 pipeline steel welded joint in a soil solution

Mengdi Yan,
Boxin Wei,
Jin Xu,
Yuan Li,
Yong Hu,
Zheng Cai,
Cheng Sun

Affiliations

Mengdi Yan: School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, PR China; Liaoning Shenyang Soil and Atmosphere Material Corrosion National Observation and Research Station, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, PR China
Boxin Wei: School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, PR China; Liaoning Shenyang Soil and Atmosphere Material Corrosion National Observation and Research Station, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, PR China; Corresponding author.
Jin Xu: School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, PR China; Liaoning Shenyang Soil and Atmosphere Material Corrosion National Observation and Research Station, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, PR China; Corresponding author.
Yuan Li: Department of Mechanical & Manufacturing Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada; Department of Biomedical Engineering, Changzhi Medical College, Changzhi 046013, PR China
Yong Hu: Anhui Conch Group Co., Ltd, Wuhu 246713, PR China
Zheng Cai: School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, PR China; Liaoning Shenyang Soil and Atmosphere Material Corrosion National Observation and Research Station, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, PR China
Cheng Sun: School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, PR China; Liaoning Shenyang Soil and Atmosphere Material Corrosion National Observation and Research Station, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, PR China

Journal volume & issue: Vol. 24
pp. 5839 – 5863

Abstract

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The effect of sulfate-reducing bacteria (SRB) on the corrosion behavior of X80 steel welded joint in a soil solution was studied. The results indicated that SRB enhanced the corrosion of X80 steel welded joint. The corrosion behavior in the heat affected zone (HAZ) was quite different from those of in the weld metal (WM) and base metal (BM). The HAZ was an active region that could be preferentially and more quickly corroded. Macro-galvanic corrosion in the welded joint had a significant effect on the MIC behavior of the X80 steel welded joint, leading to the preferential corrosion of the HAZ.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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