Hydrogen Permeation and Electrochemical Corrosion Behavior of the X80 Pipeline Steel Weld

In this work, the microstructure of an X80 pipeline steel weld was characterized by optical and scanning electron microscopy. The hydrogen permeation and electrochemical corrosion behavior were investigated by various electrochemical measurements and analysis. It was found that there is the smallest...

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Bibliographic Details
Published in:Journal of materials engineering and performance 2013, Vol.22 (1), p.170-175
Main Authors: Xue, H. B., Cheng, Y. F.
Format: Article
Language:English
Subjects:
Applied sciences
Characterization and Evaluation of Materials
Chemistry and Materials Science
Corrosion and Coatings
Engineering Design
Exact sciences and technology
Fractures
Materials Science
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Quality Control
Reliability
Safety and Risk
Tribology
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Summary:In this work, the microstructure of an X80 pipeline steel weld was characterized by optical and scanning electron microscopy. The hydrogen permeation and electrochemical corrosion behavior were investigated by various electrochemical measurements and analysis. It was found that there is the smallest hydrogen permeation rate, but the largest hydrogen trapping density at heat-affected zone, while the base steel has the lowest hydrogen trapping. These results are associated with the typical microstructure of the individual zone. Moreover, the accumulation of hydrogen atoms would result in an enhanced corrosion locally.
ISSN:1059-9495
1544-1024
DOI:10.1007/s11665-012-0216-1