Elucidating the effect of titanium alloying on the pitting corrosion of ferritic stainless steel
Ferritic stainless steels have been utilized in marine atmosphere and are found to be susceptible to pitting corrosion in our field investigation. Alloying is an important to modify the passive film on the surface and improve the pitting corrosion resistance. Nevertheless, how the addition of titani...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S223878542303096X |
| _version_ | 1797338392423301120 |
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| author | Menghao Liu Bo Liu Zeqing Ni Cuiwei Du Xiaogang Li |
| author_facet | Menghao Liu Bo Liu Zeqing Ni Cuiwei Du Xiaogang Li |
| author_sort | Menghao Liu |
| collection | DOAJ |
| description | Ferritic stainless steels have been utilized in marine atmosphere and are found to be susceptible to pitting corrosion in our field investigation. Alloying is an important to modify the passive film on the surface and improve the pitting corrosion resistance. Nevertheless, how the addition of titanium modifies the passive film and affects the pitting corrosion resistance of ferritic stainless steels remain controversial. This study has elucidated these topics through microstructure analysis and corrosion properties analysis. The results demonstrate that titanium addition increases the pitting potential almost linearly. Titanium forms TiO2 in the passive film and reduces defect density of the passive film. Moreover, titanium addition induces the precipitation of the Laves phase, which promotes micro-galvanic corrosion. For the titanium-alloyed ferritic stainless steels, pitting corrosion predominantly occurs in the ferrite phase adjacent to the Laves phase. The influence mechanism of titanium on the pitting corrosion of the ferritic stainless steel has been established, which takes micro-galvanic corrosion induced by titanium addition into account. |
| first_indexed | 2024-03-08T09:29:23Z |
| format | Article |
| id | doaj.art-facaf6689e914e6f811616a15da284e4 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-08T09:29:23Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-facaf6689e914e6f811616a15da284e42024-01-31T05:43:21ZengElsevierJournal of Materials Research and Technology2238-78542024-01-012812471262Elucidating the effect of titanium alloying on the pitting corrosion of ferritic stainless steelMenghao Liu0Bo Liu1Zeqing Ni2Cuiwei Du3Xiaogang Li4National Materials Corrosion and Protection Scientific Data Center, Institute for Advanced Material and Technology, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Materials Science and Engineering, Xi'an Shiyou University, Xi'an, 710065, ChinaCollaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, ChinaNational Materials Corrosion and Protection Scientific Data Center, Institute for Advanced Material and Technology, University of Science and Technology Beijing, Beijing 100083, China; Corresponding author. University of Science and Technology Beijing, Beijing 100083, China.National Materials Corrosion and Protection Scientific Data Center, Institute for Advanced Material and Technology, University of Science and Technology Beijing, Beijing 100083, ChinaFerritic stainless steels have been utilized in marine atmosphere and are found to be susceptible to pitting corrosion in our field investigation. Alloying is an important to modify the passive film on the surface and improve the pitting corrosion resistance. Nevertheless, how the addition of titanium modifies the passive film and affects the pitting corrosion resistance of ferritic stainless steels remain controversial. This study has elucidated these topics through microstructure analysis and corrosion properties analysis. The results demonstrate that titanium addition increases the pitting potential almost linearly. Titanium forms TiO2 in the passive film and reduces defect density of the passive film. Moreover, titanium addition induces the precipitation of the Laves phase, which promotes micro-galvanic corrosion. For the titanium-alloyed ferritic stainless steels, pitting corrosion predominantly occurs in the ferrite phase adjacent to the Laves phase. The influence mechanism of titanium on the pitting corrosion of the ferritic stainless steel has been established, which takes micro-galvanic corrosion induced by titanium addition into account.http://www.sciencedirect.com/science/article/pii/S223878542303096XMicrostructureTitaniumFerritic stainless steelPitting corrosion |
| spellingShingle | Menghao Liu Bo Liu Zeqing Ni Cuiwei Du Xiaogang Li Elucidating the effect of titanium alloying on the pitting corrosion of ferritic stainless steel Journal of Materials Research and Technology Microstructure Titanium Ferritic stainless steel Pitting corrosion |
| title | Elucidating the effect of titanium alloying on the pitting corrosion of ferritic stainless steel |
| title_full | Elucidating the effect of titanium alloying on the pitting corrosion of ferritic stainless steel |
| title_fullStr | Elucidating the effect of titanium alloying on the pitting corrosion of ferritic stainless steel |
| title_full_unstemmed | Elucidating the effect of titanium alloying on the pitting corrosion of ferritic stainless steel |
| title_short | Elucidating the effect of titanium alloying on the pitting corrosion of ferritic stainless steel |
| title_sort | elucidating the effect of titanium alloying on the pitting corrosion of ferritic stainless steel |
| topic | Microstructure Titanium Ferritic stainless steel Pitting corrosion |
| url | http://www.sciencedirect.com/science/article/pii/S223878542303096X |
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