Influence of Cr and Ni elements on the electrochemical and early corrosion behavior of FeMnAlC low-density steel
FeMnAlC low-density steel (LDS) is considered to be a promising material due to its good mechanical properties and light weight, its corrosion resistance, however, needs to be improved. In this paper, the effect of Cr and Ni on the electrochemical and early corrosion behavior of a Fe–25Mn–10Al–1.5C...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423004519 |
| _version_ | 1797858768303685632 |
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| author | Gang Li Wei Wu Peilin Chai Xin Yang Longfei Song |
| author_facet | Gang Li Wei Wu Peilin Chai Xin Yang Longfei Song |
| author_sort | Gang Li |
| collection | DOAJ |
| description | FeMnAlC low-density steel (LDS) is considered to be a promising material due to its good mechanical properties and light weight, its corrosion resistance, however, needs to be improved. In this paper, the effect of Cr and Ni on the electrochemical and early corrosion behavior of a Fe–25Mn–10Al–1.5C LDS in a 3.5% NaCl solution was studied through microstructure characterization, electrochemical tests and immersion tests. The results showed that Cr and Ni alloying reduced the austenite grain size and promoted the formation of the B2 phase. Adding 2% Cr or Ni to the Fe–25Mn–10Al–1.5C LDS clearly inhibited the electrochemical activity and initial micro galvanic effect between the second phases and the austenite. Moreover, the properties of the corrosion product film were optimized, and the local corrosion process beneath the product film was mitigated. Compared with 2% Cr addition, 2% Ni addition improved the corrosion resistance of the FeMnAlC LDS better from the aspects of electrochemistry, corrosion product film and corrosion mode. |
| first_indexed | 2024-04-09T21:18:43Z |
| format | Article |
| id | doaj.art-b976dbd9fe43411c9ea8eee956768f9a |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-09T21:18:43Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-b976dbd9fe43411c9ea8eee956768f9a2023-03-28T06:49:05ZengElsevierJournal of Materials Research and Technology2238-78542023-03-012358925906Influence of Cr and Ni elements on the electrochemical and early corrosion behavior of FeMnAlC low-density steelGang Li0Wei Wu1Peilin Chai2Xin Yang3Longfei Song4Avic China Aero-Polytechnology Establishment, Beijing 100028, ChinaShanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai 200090, China; Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China; Corresponding author.Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, ChinaInstitute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, ChinaInstitute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China; School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, Guangdong, China; Corresponding author.FeMnAlC low-density steel (LDS) is considered to be a promising material due to its good mechanical properties and light weight, its corrosion resistance, however, needs to be improved. In this paper, the effect of Cr and Ni on the electrochemical and early corrosion behavior of a Fe–25Mn–10Al–1.5C LDS in a 3.5% NaCl solution was studied through microstructure characterization, electrochemical tests and immersion tests. The results showed that Cr and Ni alloying reduced the austenite grain size and promoted the formation of the B2 phase. Adding 2% Cr or Ni to the Fe–25Mn–10Al–1.5C LDS clearly inhibited the electrochemical activity and initial micro galvanic effect between the second phases and the austenite. Moreover, the properties of the corrosion product film were optimized, and the local corrosion process beneath the product film was mitigated. Compared with 2% Cr addition, 2% Ni addition improved the corrosion resistance of the FeMnAlC LDS better from the aspects of electrochemistry, corrosion product film and corrosion mode.http://www.sciencedirect.com/science/article/pii/S2238785423004519Low-density steelCr/Ni alloyingCorrosion resistanceElectrochemistryLocalized corrosionCorrosion product film |
| spellingShingle | Gang Li Wei Wu Peilin Chai Xin Yang Longfei Song Influence of Cr and Ni elements on the electrochemical and early corrosion behavior of FeMnAlC low-density steel Journal of Materials Research and Technology Low-density steel Cr/Ni alloying Corrosion resistance Electrochemistry Localized corrosion Corrosion product film |
| title | Influence of Cr and Ni elements on the electrochemical and early corrosion behavior of FeMnAlC low-density steel |
| title_full | Influence of Cr and Ni elements on the electrochemical and early corrosion behavior of FeMnAlC low-density steel |
| title_fullStr | Influence of Cr and Ni elements on the electrochemical and early corrosion behavior of FeMnAlC low-density steel |
| title_full_unstemmed | Influence of Cr and Ni elements on the electrochemical and early corrosion behavior of FeMnAlC low-density steel |
| title_short | Influence of Cr and Ni elements on the electrochemical and early corrosion behavior of FeMnAlC low-density steel |
| title_sort | influence of cr and ni elements on the electrochemical and early corrosion behavior of femnalc low density steel |
| topic | Low-density steel Cr/Ni alloying Corrosion resistance Electrochemistry Localized corrosion Corrosion product film |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423004519 |
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