Effect of Tempered Martensite and Ferrite/Bainite on Corrosion Behavior of Low Alloy Steel Used for Flexible Pipe Exposed to High-Temperature Brine Environment

被引：20

作者：

Zhang, Dazheng ^{[1
]}

Gao, Xiuhua ^{[1
]}

Su, Guanqiao ^{[1
]}

Liu, Zhenguang ^{[2
]}

Yang, Ningning ^{[1
]}

Du, Linxiu ^{[1
]}

Misra, R. D. K. ^{[3
]}

机构：

[1] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Liaoning, Peoples R China

[2] Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Peoples R China

[3] Univ Texas El Paso, Dept Met Mat & Biomed Engn, El Paso, TX 79968 USA

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2018年 / 27卷 / 09期

基金：

国家高技术研究发展计划(863计划);

关键词：

corrosion behavior; ferrite bainite; flexible pipe; high-temperature brine environment; tempered martensite; VAPOR-SATURATED CO2; MEDIUM-MN STEEL; ATMOSPHERIC CORROSION; RUST LAYER; WEATHERING STEEL; CARBON-STEEL; CR; RISERS; PERFORMANCE; RESISTANCE;

D O I：

10.1007/s11665-018-3587-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Immersion experiments and electrochemical measurements were carried out to study the effect of tempered martensite and ferrite/bainite on corrosion behavior of low alloy steel used for flexible pipe exposed to high-temperature brine environment in terms of microstructure morphology, corrosion rate, corrosion products characteristics, potentiodynamic polarization curves and electrochemical impedance spectroscopy. The experimental results indicated that the proportion of high-angle grain boundaries of tempered martensite steel was greater than ferrite/bainite steel. The corrosion rate of ferrite/bainite steel was lower than tempered martensite steel. With increasing immersion time, the structure of corrosion products formed on the surface of ferrite/bainite steel was more compact and denser than tempered martensite steel. In addition, the current density of ferrite/bainite steel was lower than tempered martensite steel. The charge transfer resistance and total impedance of ferrite/bainite steel were larger than tempered martensite steel. Thus, the corrosion resistance of ferrite/bainite steel exposed to high-temperature brine environment was excellent compared to the tempered martensite steel.

引用

页码：4911 / 4920

页数：10

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