| Effects of rare earth modifying inclusions on the pitting corrosion of 13Cr4Ni martensitic stainless steel | |
| Wang, Changgang1; Ma, Rongyao1; Zhou, Yangtao1; Liu, Yang1; Daniel, Enobong Felix1,2; Li, Xiaofang3; Wang, Pei1; Dong, Junhua1; Ke, Wei3 | |
| Corresponding Author | Ma, Rongyao(ryma14b@imr.ac.cn) ; Wang, Pei(pwang@imr.ac.cn) ; Dong, Junhua(jhdong@imr.ac.cn) |
| 2021-12-10 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| Volume | 93Pages:232-243 |
| Abstract | In this study, the pitting corrosion behavior of 13Cr4Ni martensitic stainless steel (BASE) and that modified with rare earth (REM) in 0.1 mol/L NaCl solution were characterized. Techniques such as automatic secondary electron microscope (ASPEX PSEM detector), scanning electron microscope (SEM), transmission electron microscope (TEM), scanning Kelvin probe force microscope (SKP), potentiodynamic and potentiostatic polarizations were employed. The results obtained indicate that BASE steel contains Al2O3/MnS, Al2O3 and MnS inclusions, while REM steels contain (La, Ce, Cr, Fe)-O and (La, Ce, Cr, Fe)-O-S inclusions. Compared with BASE steel, REM steel is more susceptible to induce the metastable pitting nucleation and repassivation, whereas it restrains the transition from metastable pitting to stable pitting. Adding 0.021% rare earth element to BASE steel can reduce the number and area of inclusions, while that of 0.058% can increase the number and enlarged the size of inclusions, which is also the reason that pitting corrosion resistance of 58REM steel is slightly lower than that of 21REM steel. In the process of pitting corrosion induced by Al2O3/MnS inclusions, MnS is preferentially anodic dissolved, and also the matrix contacted with Al2O3 is subsequently anodic dissolved. For REM steels, anodic dissolution preferentially occurs at the boundary between inclusions and matrix, while (La, Ce, Cr, Fe)-O inclusions chemically dissolve in local acidic environment or are separated from steel matrix. The chemically dissolved substance (La3+ and Ce3+) of (La, Ce, Cr, Fe)-O inclusions are concentrated in pitting pits, which inhibits its continuous growth. (C) 2021 Published by Elsevier Ltd on behalf of Chinese Society for Metals. |
| Keyword | 13Cr4Ni martensitic stainless steel Rare earth modifying inclusion Al2O3/MnS inclusion Metastable pitting corrosion Stable pitting corrosion |
| Funding Organization | National Natural Science Foun-dation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Scientific Research Project of China Three Gorges Corporation ; National Key Research and Development Program of China |
| DOI | 10.1016/j.jmst.2021.03.014 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foun-dation of China[51801219] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2019193] ; Scientific Research Project of China Three Gorges Corporation[JD-YJ-05006] ; National Key Research and Development Program of China[2017YFB0702302] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000718115300004 |
| Publisher | JOURNAL MATER SCI TECHNOL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/167227 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Ma, Rongyao; Wang, Pei; Dong, Junhua |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Environm Corros Ctr Mat, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Changgang,Ma, Rongyao,Zhou, Yangtao,et al. Effects of rare earth modifying inclusions on the pitting corrosion of 13Cr4Ni martensitic stainless steel[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,93:232-243. |
| APA | Wang, Changgang.,Ma, Rongyao.,Zhou, Yangtao.,Liu, Yang.,Daniel, Enobong Felix.,...&Ke, Wei.(2021).Effects of rare earth modifying inclusions on the pitting corrosion of 13Cr4Ni martensitic stainless steel.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,93,232-243. |
| MLA | Wang, Changgang,et al."Effects of rare earth modifying inclusions on the pitting corrosion of 13Cr4Ni martensitic stainless steel".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 93(2021):232-243. |
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