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A new method to determine the synergistic effects of area ratio and microstructure on the galvanic corrosion of LAS A508/309 L/308 L SS dissimilar metals weld
Okonkwo, Bright O.1,2; Ming, Hongliang1; Wang, Jianqiu1; Han, En-Hou1; Rahimi, Ehsan3,4; Davoodi, Ali3,5; Hosseinpour, Saman6
Corresponding AuthorMing, Hongliang(hlming12s@imr.ac.cn) ; Wang, Jianqiu(wangjianqiu@imr.ac.cn)
2021-07-10
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume78Pages:38-50
AbstractThe synergistic effects of area ratio and microstructure on the galvanic corrosion of A508/309 L/308 L dissimilar metals weld (DMW) are studied by a multi-analytical approach. It was demonstrated that decreasing the anode/cathode surface area ratio obviously enhances the corrosion rate of A508, both locally and globally. Deeper analyses of the AFM results enabled quantitative comparison of the corrosion behaviour of the different surface constituents. It was revealed that in the galvanic interaction of the DMW, the grain refined region corrodes most, followed by the partial grain refined region and base metal matrix of the A508, respectively. The electrochemical localization index (LI) estimation method and AFM analysis both confirmed the presence of a mixed (localized and uniform) corrosion phenomenon occurring on the surface of the A508 anode metal in the galvanic interaction of the dissimilar metals. Finally, the degree of synergism equation was utilized to describe the synergistic effects of anode/cathode area ratio and the microstructure of the samples on the galvanic corrosion of LAS A508/309L/308L SS DMW. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
KeywordLow alloy steel Stainless steel SEM AFM Galvanic corrosion Inclusion
Funding OrganizationNational Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Key Program of the Chinese Academy of Sciences
DOI10.1016/j.jmst.2020.10.044
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51771211] ; Key Research Program of Frontier Sciences, CAS[QYZDY-SSW-JSC012] ; Key Program of the Chinese Academy of Sciences[ZDRW-CN-2017-1]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000652023600004
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/161310
Collection中国科学院金属研究所
Corresponding AuthorMing, Hongliang; Wang, Jianqiu
Affiliation1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Ferdowsi Univ Mashhad, Fac Engn, Mat & Met Engn Dept, Mashhad 9177948974, Razavi Khorasan, Iran
4.Univ Udine, Polytech Dept Engn & Architecture, I-33100 Udine, Italy
5.Harvard Univ, John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA
6.Friedrich Alexander Univ Erlangen Nurnberg FAU, Inst Particle Technol LFG, D-91058 Erlangen, Germany
Recommended Citation
GB/T 7714
Okonkwo, Bright O.,Ming, Hongliang,Wang, Jianqiu,et al. A new method to determine the synergistic effects of area ratio and microstructure on the galvanic corrosion of LAS A508/309 L/308 L SS dissimilar metals weld[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,78:38-50.
APA Okonkwo, Bright O..,Ming, Hongliang.,Wang, Jianqiu.,Han, En-Hou.,Rahimi, Ehsan.,...&Hosseinpour, Saman.(2021).A new method to determine the synergistic effects of area ratio and microstructure on the galvanic corrosion of LAS A508/309 L/308 L SS dissimilar metals weld.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,78,38-50.
MLA Okonkwo, Bright O.,et al."A new method to determine the synergistic effects of area ratio and microstructure on the galvanic corrosion of LAS A508/309 L/308 L SS dissimilar metals weld".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 78(2021):38-50.
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