A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Corrosion degradation of pipeline steels with different strength grades
Ukrainian gas mains steels, taking into account their age, are subjected to aging and degradation, which leads todeterioration of their properties, especially mechanical ones. Degradation of mechanical properties of steels is intensified bycorrosion in the course of which hydrogen evolves and is absorbed by metal, so the metal becomes embrittled.The aim of this work is to define susceptibility of pipeline steels with different strength grades to corrosion degradationduring their long-term service. The comparative studies of corrosion and electrochemical behaviour of low alloyed gas pipelinesteels with different strength grades in NS4 aqueous solution, simulating soil environment, has been carried out. Pipeline steelswith three strength grades in different states – in the as-received state and after long-term operation have been investigated. Theinfluence of long-term operation on corrosion and electrochemical properties of steels has been analysed. It has been found thatthe 17H1S steel (steel is equivalent to X52 strength grade) is characterized by the lowest corrosion resistance among the studiedsteels, and the highest corrosion resistance is typical for the X70 steel in both studied states. Corrosion and electrochemicalcharacteristics of pipelines steels with different strength grades in the NS4 environment have been significantly deteriorated dueto long-term service. It has been found out that degree of corrosion degradation caused by long-term operation of gas mains is thehighest for the high strength X70 steel. Electrochemical activation of pipeline steels caused by their long-term service comes outin an increase of cathode and anode processes intensity, increase of corrosion current density, decrease of polarization resistanceand in a shift of corrosion potential values towards more negative ones for degraded steels compared with steels in the initialstate.
Corrosion degradation of pipeline steels with different strength grades
Ukrainian gas mains steels, taking into account their age, are subjected to aging and degradation, which leads todeterioration of their properties, especially mechanical ones. Degradation of mechanical properties of steels is intensified bycorrosion in the course of which hydrogen evolves and is absorbed by metal, so the metal becomes embrittled.The aim of this work is to define susceptibility of pipeline steels with different strength grades to corrosion degradationduring their long-term service. The comparative studies of corrosion and electrochemical behaviour of low alloyed gas pipelinesteels with different strength grades in NS4 aqueous solution, simulating soil environment, has been carried out. Pipeline steelswith three strength grades in different states – in the as-received state and after long-term operation have been investigated. Theinfluence of long-term operation on corrosion and electrochemical properties of steels has been analysed. It has been found thatthe 17H1S steel (steel is equivalent to X52 strength grade) is characterized by the lowest corrosion resistance among the studiedsteels, and the highest corrosion resistance is typical for the X70 steel in both studied states. Corrosion and electrochemicalcharacteristics of pipelines steels with different strength grades in the NS4 environment have been significantly deteriorated dueto long-term service. It has been found out that degree of corrosion degradation caused by long-term operation of gas mains is thehighest for the high strength X70 steel. Electrochemical activation of pipeline steels caused by their long-term service comes outin an increase of cathode and anode processes intensity, increase of corrosion current density, decrease of polarization resistanceand in a shift of corrosion potential values towards more negative ones for degraded steels compared with steels in the initialstate.
Corrosion degradation of pipeline steels with different strength grades
Zvirko, O.I. (author)
2018-06-06
JOURNAL OF HYDROCARBON POWER ENGINEERING; Vol. 4 No. 1 (2017): JOURNAL OF HYDROCARBON POWER ENGINEERING; 38-42 ; ЖУРНАЛ ЕНЕРГЕТИКИ ВУГЛЕВОДНІВ; Том 4 № 1 (2017): JOURNAL OF HYDROCARBON POWER ENGINEERING; 38-42 ; JOURNAL OF HYDROCARBON POWER ENGINEERING; Том 4 № 1 (2017): JOURNAL OF HYDROCARBON POWER ENGINEERING; 38-42 ; 2415-3370 ; 2311-1399
Article (Journal)
Electronic Resource
English
Study of high strength pipeline steels with different microstructures
| British Library Online Contents | 2009
Corrosion degradation of pipeline carbon steels subjected to geothermal plant conditions
| British Library Online Contents | 2010
Corrosion Degradation of Pipeline Carbon Steels Subject to Geothermal Plant Conditions
| British Library Online Contents | 2010
Stress Corrosion Cracking of Pipeline Steels
| British Library Online Contents | 2002
Stress Corrosion Cracking in Pipeline Steels
| British Library Online Contents | 2014