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Title: Hydrogen accumulation and distribution in pipeline steel in intensified corrosion conditions
Authors: Titov, Anatoly Ivanovich
Lun-Fu, Aleksandr Viktorovich
Gayvoronskiy, Aleksandr Viktorovich
Bubenchikov, Mikhail Alekseevich
Bubenchikov, Aleksey Mikhaylovich
Lider, Andrey Markovich
Syrtanov, Maksim Sergeevich
Kudiyarov, Victor Nikolaevich
Keywords: trunk gas pipelines; hydrogen embrittlement; hydrogen adsorption; pipeline inner surface; cathodic protection current; hydrogen distribution; магистральные газопроводы; водород; адсорбция
Issue Date: 2019
Publisher: Томский политехнический университет
Citation: Hydrogen accumulation and distribution in pipeline steel in intensified corrosion conditions / A. I. Titov [et al.] // Materials. — 2019. — Vol. 12 iss. 9. — [1409, 11 p.].
Abstract: Hydrogen accumulation and distribution in pipeline steel under conditions of enhanced corrosion has been studied. The XRD analysis, optical spectrometry and uniaxial tension tests reveal that the corrosion environment affects the parameters of the inner and outer surface of the steel pipeline as well as the steel pipeline bulk. The steel surface becomes saturated with hydrogen released as a reaction product during insignificant methane dissociation. Measurements of the adsorbed hydrogen concentration throughout the steel pipe bulk were carried out. The pendulum impact testing of Charpy specimens was performed at room temperature in compliance with national standards. The mechanical properties of the steel specimens were found to be considerably lower, and analogous to the properties values caused by hydrogen embrittlement.
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