Effects of Nanosized Nb Carbide Precipitates on the Corrosion Behavior of High-Strength Low-Alloy Steel in Simulated Seawater

被引:17
|
作者
Zhao, Qiyue [1 ]
Wang, Zihao [1 ]
Fan, Endian [1 ]
Wu, Xiaoguang [1 ]
Huang, Yunhua [1 ]
Li, Xiaogang [1 ,2 ]
机构
[1] Univ Sci & Technol Beijing, Corros & Protect Ctr, Beijing 100083, Peoples R China
[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China
来源
基金
中国国家自然科学基金;
关键词
NbC precipitate; corrosion; HSLA steel; simulated seawater; MECHANICAL-PROPERTIES; HSLA STEELS; MICROSTRUCTURE;
D O I
10.20964/2017.09.35
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Nb is usually utilized in high-strength low-alloy (HSLA) steels as a strengthening and toughening microalloying element. HSLA steels with different Nb contents, or different amounts of precipitates were chosen to study the effects of Nb and Nb carbide precipitates on the corrosion behavior of HSLA steel in simulated seawater respectively. Microstructural and electrochemical investigations revealed that Nb enhances the corrosion resistance of HSLA steel due to the homogeneous microstructure resulted from NbC precipitation in steel. Moreover, although as a cathodic phase, the nano-sized Nb carbide precipitates have no deteriorating effect on the corrosion behavior of HSLA steel in simulated seawater.
引用
收藏
页码:7989 / 7996
页数:8
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