Effect of Chemical Composition and Microstructure Parameters on Carbon and Low-Alloy Steel Corrosion Resistance Under Oil Industry Pipeline Operation Conditions

• Published in: Metallurgist (New York) 2019-01, Vol.62 (9-10), p.1030-1038
• Main Authors: Amezhnov, A. V., Rodionova, I. G., Batsalev, A. I., D’yakonov, D. L., Shaposhnikov, N. G., Shatskii, T. E., Marzoeva, M. E.
• Format: Article
• Language: English
• Subjects: Alloy steel; Alloys; Aqueous solutions; Carbides; Carbon nitride; Characterization and Evaluation of Materials; Chemical composition; Chemistry and Materials Science; Composition effects; Corrosion (Chemistry); Corrosion effects; Corrosion resistance; Corrosion resistant alloys; Corrosion resistant steels; Low alloy steels; Materials Science; Metallic Materials; Metals (Materials); Microstructure; Niobium carbide; Oil fields; Organic chemistry; Parameters; Pipelines; Precipitates; Service life; Specialty metals industry; Specialty steels; Steel; Steel corrosion; Tool steel; Vanadium; Vanadium carbide; Vanadium steels
• ISSN: 0026-0894; 1573-8892
• DOI: 10.1007/s11015-019-00750-w

The effect of chemical composition and microstructure parameters on corrosion resistance of carbon and low-alloy steels in neutral aqueous media, typical for oil-field pipeline operating conditions, is studied in order to develop requirements for the specified characteristics to improve steel equipment service life. It is shown that a large amount of interfacial nano-sized precipitates in steel, (even with sizes of 2–3 nm or less) mainly of vanadium carbide (carbonitride), and to a markedly lesser extent with niobium carbide, is present. A significant reduction in the corrosion resistance of steel due to the formation of such particles is observed with an increase in the vanadium content in steel more than 0.065–0.07%.