| Atomic-scale evidence for the intergranular corrosion mechanism induced by co-segregation of low-chromium ferritic stainless steel | |
| Hu, Shuai1,2; Han, En-Hou1; Liu, Xianbin1 | |
| Corresponding Author | Han, En-Hou(ehhan@imr.ac.cn) |
| 2021-08-15 | |
| Source Publication | CORROSION SCIENCE
 |
| ISSN | 0010-938X |
| Volume | 189Pages:7 |
| Abstract | The composition distribution around grain boundaries of low-chromium ferritic stainless steels was investigated by the techniques of three-dimensional atom probe and focused ion beam. It was found that Cr atoms segregated largely (up to as much as 22.4 at.%) at grain boundaries with co-segregation of other solute atoms in the absence of Cr-carbides precipitation. The co-segregation induced the formation of a Cr-depleted zone (down to only 9.3 at.%) leading to intergranular corrosion. Based on the new mechanism, a novel concept of reducing or even preventing the grain boundary segregation to prevent intergranular corrosion at the level of dynamics/thermodynamics was proposed. |
| Keyword | Ferritic stainless steel Intergranular corrosion Co-segregation Cr-depletion Prevention |
| Funding Organization | Key Research Program of Frontier Sciences, Chinese Academy of Sciences |
| DOI | 10.1016/j.corsci.2021.109588 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Key Research Program of Frontier Sciences, Chinese Academy of Sciences[QYZDY-SSW-JSC012] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000677547100003 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/159774 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Han, En-Hou |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Natl Engn Res Ctr Corros Control, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Hu, Shuai,Han, En-Hou,Liu, Xianbin. Atomic-scale evidence for the intergranular corrosion mechanism induced by co-segregation of low-chromium ferritic stainless steel[J]. CORROSION SCIENCE,2021,189:7. |
| APA | Hu, Shuai,Han, En-Hou,&Liu, Xianbin.(2021).Atomic-scale evidence for the intergranular corrosion mechanism induced by co-segregation of low-chromium ferritic stainless steel.CORROSION SCIENCE,189,7. |
| MLA | Hu, Shuai,et al."Atomic-scale evidence for the intergranular corrosion mechanism induced by co-segregation of low-chromium ferritic stainless steel".CORROSION SCIENCE 189(2021):7. |
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