Role of inclusions in the pitting initiation of pipeline steel and the effect of electron irradiation in SEM

Yafei Wang; Guangxu Cheng; Wei Wu; Yun Li

doi:10.1016/j.corsci.2017.10.029

Role of inclusions in the pitting initiation of pipeline steel and the effect of electron irradiation in SEM

Yafei Wang, Guangxu Cheng, Wei Wu, Yun Li

Research output: Contribution to journal › Article › peer-review

43 Citations (Scopus)

Abstract

The role of inclusions in the initiation of corrosion pits for a high strength pipeline steel in NaCl solution was investigated. The inclusions with typical compositions of Al-Mg-Ca-S-O were found typically spherical and responsible for the initiation of circular corrosion pits. The possible formation mechanism of the spherical inclusions and their role in the initiation of pitting corrosion are discussed. The electron irradiation in scanning electron microscopy, including the morphology observation and energy-dispersive X-ray spectroscopy test, was found to have significant influence on the pitting susceptibility around the inclusions.

Original language	English
Pages (from-to)	252-260
Number of pages	9
Journal	Corrosion Science
Volume	130
DOIs	https://doi.org/10.1016/j.corsci.2017.10.029
Publication status	Published - Jan 2018
Externally published	Yes

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)
Materials Science(all)

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10.1016/j.corsci.2017.10.029

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title = "Role of inclusions in the pitting initiation of pipeline steel and the effect of electron irradiation in SEM",

abstract = "The role of inclusions in the initiation of corrosion pits for a high strength pipeline steel in NaCl solution was investigated. The inclusions with typical compositions of Al-Mg-Ca-S-O were found typically spherical and responsible for the initiation of circular corrosion pits. The possible formation mechanism of the spherical inclusions and their role in the initiation of pitting corrosion are discussed. The electron irradiation in scanning electron microscopy, including the morphology observation and energy-dispersive X-ray spectroscopy test, was found to have significant influence on the pitting susceptibility around the inclusions.",

author = "Yafei Wang and Guangxu Cheng and Wei Wu and Yun Li",

note = "Funding Information: The authors would like to gratefully acknowledge the financial support from the National Basic Research Program of China (973 Program, Grant No. 2015CB057602 ). We thank Mr. Zijun Ren at Instrument Analysis Center of Xi{\textquoteright}an Jiaotong University for his assistance with SEM and EDS analyses. Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

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doi = "10.1016/j.corsci.2017.10.029",

language = "English",

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journal = "Corrosion Science",

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T1 - Role of inclusions in the pitting initiation of pipeline steel and the effect of electron irradiation in SEM

AU - Wang, Yafei

AU - Cheng, Guangxu

AU - Wu, Wei

AU - Li, Yun

N1 - Funding Information: The authors would like to gratefully acknowledge the financial support from the National Basic Research Program of China (973 Program, Grant No. 2015CB057602 ). We thank Mr. Zijun Ren at Instrument Analysis Center of Xi’an Jiaotong University for his assistance with SEM and EDS analyses. Publisher Copyright: © 2017 Elsevier Ltd

PY - 2018/1

Y1 - 2018/1

N2 - The role of inclusions in the initiation of corrosion pits for a high strength pipeline steel in NaCl solution was investigated. The inclusions with typical compositions of Al-Mg-Ca-S-O were found typically spherical and responsible for the initiation of circular corrosion pits. The possible formation mechanism of the spherical inclusions and their role in the initiation of pitting corrosion are discussed. The electron irradiation in scanning electron microscopy, including the morphology observation and energy-dispersive X-ray spectroscopy test, was found to have significant influence on the pitting susceptibility around the inclusions.

AB - The role of inclusions in the initiation of corrosion pits for a high strength pipeline steel in NaCl solution was investigated. The inclusions with typical compositions of Al-Mg-Ca-S-O were found typically spherical and responsible for the initiation of circular corrosion pits. The possible formation mechanism of the spherical inclusions and their role in the initiation of pitting corrosion are discussed. The electron irradiation in scanning electron microscopy, including the morphology observation and energy-dispersive X-ray spectroscopy test, was found to have significant influence on the pitting susceptibility around the inclusions.

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DO - 10.1016/j.corsci.2017.10.029

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EP - 260

JO - Corrosion Science

JF - Corrosion Science

ER -

Role of inclusions in the pitting initiation of pipeline steel and the effect of electron irradiation in SEM

Abstract

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