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| Localized Corrosion Behavior Induced by MnS Inclusions in HRB400E Rebar Steel |
HAN Yulong1,2, LI Jian3, GUO Liya1,2( ), YANG Bianjiang2, LU Hengchang1,2, WEI Xicheng1,2, DONG Han1,2 |
1 School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
2 Zhejiang Institute of Advanced Materials, Shanghai University, Jiaxing 314100, China
3 Shaanxi Steel Group lndustrial Innovation Research Institute Co., Ltd., Hanzhong 723000, China |
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Cite this article:
HAN Yulong, LI Jian, GUO Liya, YANG Bianjiang, LU Hengchang, WEI Xicheng, DONG Han. Localized Corrosion Behavior Induced by MnS Inclusions in HRB400E Rebar Steel. Journal of Chinese Society for Corrosion and protection, 2024, 44(5): 1255-1262.
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Abstract The effect of MnS inclusions with different sizes on the corrosion behavior of HRB400E rebar steel in 2%NaCl solution was investigated by means of automatic inclusion analyzer, immersion tests and Electron Backscattered Diffraction. The in-situ immersion test results showed that the localized corrosion was more easily induced by the relatively larger MnS inclusions than the smaller ones. The EBSD results suggested that corrosion was more likely initiated by inclusions with size above 40 μm2, and this may be related to the presence of more low-angle grain boundaries and higher dislocation densities around them. Meanwhile, compared with the pit induced by a single inclusion, the width of pits initiated by clusters of large-size inclusions were greater.
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Received: 24 October 2023
32134.14.1005.4537.2023.337
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| Fund: National Natural Science Foundation of China(42276214, 52201078);Shanghai Sailing Program(21YF1412800) |
Corresponding Authors:
GUO Liya, E-mail: liya_guo@shu.edu.cn
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