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

作     者：Bright O.Okonkwo Hongliang Ming Jianqiu Wang En-Hou Han Ehsan Rahimi Ali Davoodi Saman Hosseinpour Bright O.Okonkwo;Hongliang Ming;Jianqiu Wang;En-Hou Han;Ehsan Rahimi;Ali Davoodi;Saman Hosseinpour

作者机构：CAS Key Laboratory of Nuclear Materials and Safety AssessmentInstitute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and EngineeringUniversity of Science and Technology of ChinaShenyang 110016China Materials and Metallurgical Engineering DepartmentFaculty of EngineeringFerdowsi University of MashhadMashhad ***Iran Polytechnic Department of Engineering and ArchitectureUniversity of Udine33100 UdineItaly John A.Paulson School of Engineering and Applied SciencesHarvard UniversityCambridgeMA 02138USA Institute of Particle Technology(LFC)Friedrich-Alexander-Universitdt-Erlangen-Numberg(FAU)91058 ErlangenGermany 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2021年第78卷第19期

页      面：38-50页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：the National Natural Science Foundation of China(No.51771211) Key Research Program of Frontier Sciences,CAS(QYZDY-SSW-JSC012) the Key Program of the Chinese Academy of Sciences(ZDRW-CN-2017-1) 

主　　题：Low alloy steel Stainless steel SEM AFM Galvanic corrosion Inclusion 

摘      要：The 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 *** was demonstrated that decreasing the anode/cathode surface area ratio obviously enhances the corrosion rate of A508,both locally and *** analyses of the AFM results enabled quantitative comparison of the corrosion behaviour of the different surface *** 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,*** 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 ***,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 A508/309 L/308 L SS DMW.