Study on the Corrosion Behavior of Rare Earth / Niobium Microalloyed Steels in Marine Atmospheric Environments
For providing the data support to design and develop microalloyzed steels, the corrosion behavior of rare earth microalloyed steels and niobium microalloyed steels in marine atmospheric environments was investigated by the means of surface microstructure characterization, alternative wet/dry cycle t...
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Editorial Department of Materials Protection
2021-06-01
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| Series: | Cailiao Baohu |
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| Online Access: | http://www.mat-pro.com/fileup/1001-1560/PDF/20210602.pdf |
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| author | ZHANG Xian, HU Hong-yi, GONG Li, WANG Zhi-yuan, PENG Ding, ZHU Chang-jin, WEI Wen-zhui, WU Kai-ming |
| author_facet | ZHANG Xian, HU Hong-yi, GONG Li, WANG Zhi-yuan, PENG Ding, ZHU Chang-jin, WEI Wen-zhui, WU Kai-ming |
| author_sort | ZHANG Xian, HU Hong-yi, GONG Li, WANG Zhi-yuan, PENG Ding, ZHU Chang-jin, WEI Wen-zhui, WU Kai-ming |
| collection | DOAJ |
| description | For providing the data support to design and develop microalloyzed steels, the corrosion behavior of rare earth microalloyed steels and niobium microalloyed steels in marine atmospheric environments was investigated by the means of surface microstructure characterization, alternative wet/dry cycle test, neutral salt spray test and electrochemical measurements.Furthermore, the corrosion resistance of microalloyed steels was compared and analyzed.Results showed that the microstructure of microalloyed steels consisted of ferrite and pearlite, and niobium microalloying favored the refinements of the grains and hindered the formation of pearlite.The rust layer was composed of for γ-Fe2O3 and γ-FeOOH, which had no obvious protective effect to the substrate.With prolonging exposure periods, γ-FeOOH gradually transformed to α-FeOOH, enhancing the protective effect to the substrate.The corrosion current density of rare earth/niobium microalloyed steels declined, and thus the corrosion resistance of those two kinds of steels were improved.After a long period of corrosion, the grain refinement of niobium microalloyed steel was beneficial to increase the densification of the surface rust layer and the content of α-FeOOH was relatively high, then further the corrosion rate was reduced.Hence, compared with rare earth microalloyzed steel, the niobium microalloyed steels presented a better atmospheric corrosion resistance. |
| format | Article |
| id | doaj-art-6d3f3544258d4cfca8a939eae3ab545a |
| institution | DOAJ |
| issn | 1001-1560 |
| language | zho |
| publishDate | 2021-06-01 |
| publisher | Editorial Department of Materials Protection |
| record_format | Article |
| series | Cailiao Baohu |
| spelling | doaj-art-6d3f3544258d4cfca8a939eae3ab545a2025-08-20T03:17:04ZzhoEditorial Department of Materials ProtectionCailiao Baohu1001-15602021-06-0154671510.16577/j.cnki.42-1215/tb.2021.06.002Study on the Corrosion Behavior of Rare Earth / Niobium Microalloyed Steels in Marine Atmospheric EnvironmentsZHANG Xian, HU Hong-yi, GONG Li, WANG Zhi-yuan, PENG Ding, ZHU Chang-jin, WEI Wen-zhui, WU Kai-ming0(1.Collaborative Innovation Center for Advanced Steels, Wuhan 430081, China;2.Hubei Province Key Laboratory of Systems Science in Metallurgical Process, Wuhan 430081, China;3.Division of Applied physics, College of Science, Wuhan University of Science and Technology, Wuhan 430081, China)For providing the data support to design and develop microalloyzed steels, the corrosion behavior of rare earth microalloyed steels and niobium microalloyed steels in marine atmospheric environments was investigated by the means of surface microstructure characterization, alternative wet/dry cycle test, neutral salt spray test and electrochemical measurements.Furthermore, the corrosion resistance of microalloyed steels was compared and analyzed.Results showed that the microstructure of microalloyed steels consisted of ferrite and pearlite, and niobium microalloying favored the refinements of the grains and hindered the formation of pearlite.The rust layer was composed of for γ-Fe2O3 and γ-FeOOH, which had no obvious protective effect to the substrate.With prolonging exposure periods, γ-FeOOH gradually transformed to α-FeOOH, enhancing the protective effect to the substrate.The corrosion current density of rare earth/niobium microalloyed steels declined, and thus the corrosion resistance of those two kinds of steels were improved.After a long period of corrosion, the grain refinement of niobium microalloyed steel was beneficial to increase the densification of the surface rust layer and the content of α-FeOOH was relatively high, then further the corrosion rate was reduced.Hence, compared with rare earth microalloyzed steel, the niobium microalloyed steels presented a better atmospheric corrosion resistance.http://www.mat-pro.com/fileup/1001-1560/PDF/20210602.pdfmicroalloyed steels; marine atmospheric environments; corrosion behavior; rare earth; niobium |
| spellingShingle | ZHANG Xian, HU Hong-yi, GONG Li, WANG Zhi-yuan, PENG Ding, ZHU Chang-jin, WEI Wen-zhui, WU Kai-ming Study on the Corrosion Behavior of Rare Earth / Niobium Microalloyed Steels in Marine Atmospheric Environments Cailiao Baohu microalloyed steels; marine atmospheric environments; corrosion behavior; rare earth; niobium |
| title | Study on the Corrosion Behavior of Rare Earth / Niobium Microalloyed Steels in Marine Atmospheric Environments |
| title_full | Study on the Corrosion Behavior of Rare Earth / Niobium Microalloyed Steels in Marine Atmospheric Environments |
| title_fullStr | Study on the Corrosion Behavior of Rare Earth / Niobium Microalloyed Steels in Marine Atmospheric Environments |
| title_full_unstemmed | Study on the Corrosion Behavior of Rare Earth / Niobium Microalloyed Steels in Marine Atmospheric Environments |
| title_short | Study on the Corrosion Behavior of Rare Earth / Niobium Microalloyed Steels in Marine Atmospheric Environments |
| title_sort | study on the corrosion behavior of rare earth niobium microalloyed steels in marine atmospheric environments |
| topic | microalloyed steels; marine atmospheric environments; corrosion behavior; rare earth; niobium |
| url | http://www.mat-pro.com/fileup/1001-1560/PDF/20210602.pdf |
| work_keys_str_mv | AT zhangxianhuhongyigongliwangzhiyuanpengdingzhuchangjinweiwenzhuiwukaiming studyonthecorrosionbehaviorofrareearthniobiummicroalloyedsteelsinmarineatmosphericenvironments |