Study of the Effect of Process Parameters in Steel Production on the Content of Corrosion-Active Nonmetallic Inclusions in Corrosion-Resistant Pipes

Lube, I. I.; Pecheritsa, A. A.; Neklyudov, I. V.; Rodionova, I. G.; Зайцев, А. И.; Marchenko, L. G.; Emel’yanov, A. V.; Stolyarov, V. I.

doi:10.1007/s11015-005-0090-2

Cited by 1 publication

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is known that the main cause of high corrosion rates of oilfield pipelines is contaminations of steel by certain harmful non-metallic inclusions, which are precipitated in steel during the ladle treatment and casting process. Such inclusions are called corrosion-active non-metallic inclusions [10,11]. However, these non-metallic inclusions in modern steels have usually a complex chemical composition, where often the influence of the composition on the corrosion is not fully known.…”

Section: Introductionmentioning

confidence: 99%

“…However, these non-metallic inclusions in modern steels have usually a complex chemical composition, where often the influence of the composition on the corrosion is not fully known. Previous authors have reported negative effects on the corrosion resistance of oil-field pipeline steels due to two types of non-metallic inclusions [10,11]. The first type is non-metallic inclusions based on calcium aluminates, which sometimes contain magnesium and silicon oxides.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modification of Non-Metallic Inclusions in Oil-Pipeline Steels by Ca-Treatment

Sidorova

Karasev

Кузнецов

et al. 2019

Metals

View full text Add to dashboard Cite

Corrosion rate in different steel grades (including oilfield pipeline steels) is determined by the presence of non-metallic inclusions (NMI) in steels. Specifically, the effect of different inclusions on the quality of steels depends on their characteristics such as size, number, morphology, composition, and physical properties, as well as their location in the steel matrix. Therefore, the optimization and control of NMI in steels are very important today to obtain an improvement of the material properties of the final steel products. It is well known that a Ca-treatment of liquid steels in ladle before casting is an effective method for modification of non-metallic inclusions for improvement of the steel properties. Therefore, the NMI characteristics were evaluated in industrial steel samples of low carbon Ca-treated steel used for production of oil-pipelines. An electrolytic extraction technique was used for extraction of NMI from the steel samples followed by three-dimensional investigations of different inclusions and clusters by using SEM in combination with EDS. Moreover, the number and compositions of corrosion active non-metallic inclusions were estimated in hot rolled steel samples from two different heats. Finally, the corrosion resistance of these steels can be discussed depending on the characteristics of non-metallic inclusions present in the steel.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%