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Microstructure Refinement on Crevice Corrosion of High-Speed Rail Steel U75V Visualized by an In Situ Monitoring System
Wang, Jian1,2,3; Zhang, Binbin1,2,4; Xu, Weichen1,2,4; Zhang, Jie1,2,4; Yang, Lihui1,2,4; Peng, Zhongbo3; Hou, Baorong1,2,4
2022-01-07
Source PublicationFRONTIERS IN MATERIALS
ISSN2296-8016
Volume8Pages:12
Corresponding AuthorXu, Weichen(w.xu@qdio.ac.cn) ; Zhang, Jie(zhangjie@qdio.ac.cn)
AbstractRail foot covered by a fastener will suffer from crevice corrosion, leading to thinning and localized attack of crevice interior posing a risk of failure. This work investigated crevice corrosion behavior of a typical pearlitic high-speed rail steel U75V, focusing for the first time on the effect of pearlitic microstructure refinement achieved by heat treatment with different cooling rates 2, 5, and 10 degrees C/s. Under anodic polarization, localized dissolved spots presented on the as-received sample, where crevice corrosion mostly initiated from. For cooling rates 2 and 5 degrees C/s, localized dissolved spots were also observed but crevice corrosion was mostly presented as general corrosion instead of from local spots, ascribed to enhanced tendency of uniform dissolution due to microstructure refinement and homogenization. For cooling rate 10 degrees C/s, crevice corrosion expanded flocculently, ascribed to preferential dissolution of pearlitic nodules with entangled cementite due to over refinement. Crevice corrosion was obviously accelerated by microstructure refinement. Cooling rates 5 and 10 degrees C/s led to the fastest and slowest expansion of the corroded area, respectively, while the corrosion depth was just the opposite based on the same amount of metal loss. This work provides important information regarding the effect of pearlitic microstructure refinement on crevice corrosion and introduces a facile method for in situ monitoring of crevice corrosion.
Keywordmicrostructure crevice corrosion pearlite cooling rate U75V rail steel interlamellar spacing
DOI10.3389/fmats.2021.820721
Indexed BySCI
Language英语
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000756964300001
PublisherFRONTIERS MEDIA SA
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/178015
Collection海洋环境腐蚀与生物污损重点实验室
Corresponding AuthorXu, Weichen; Zhang, Jie
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao, Peoples R China
2.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Marine Corros & Protect, Qingdao, Peoples R China
3.Chongqing Jiaotong Univ, Sch Shipping & Naval Architecture, Chongqing, Peoples R China
4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang, Jian,Zhang, Binbin,Xu, Weichen,et al. Microstructure Refinement on Crevice Corrosion of High-Speed Rail Steel U75V Visualized by an In Situ Monitoring System[J]. FRONTIERS IN MATERIALS,2022,8:12.
APA Wang, Jian.,Zhang, Binbin.,Xu, Weichen.,Zhang, Jie.,Yang, Lihui.,...&Hou, Baorong.(2022).Microstructure Refinement on Crevice Corrosion of High-Speed Rail Steel U75V Visualized by an In Situ Monitoring System.FRONTIERS IN MATERIALS,8,12.
MLA Wang, Jian,et al."Microstructure Refinement on Crevice Corrosion of High-Speed Rail Steel U75V Visualized by an In Situ Monitoring System".FRONTIERS IN MATERIALS 8(2022):12.
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