Microstructure characteristics and corrosion behavior of metal inert gas welded dissimilar joints of 6005A modified by Sc and 5083 alloys

作     者：Guo-fu XU Liang LIU Ying DENG Yu ZENG Jun-chang CAO Lei TANG Xiao-yan PENG Jia-qi DUAN Mei-chan LIANG Qing-lin PAN 徐国富;刘亮;邓英;曾渝;曹俊昌;唐磊;彭小燕;段佳琦;梁美婵;潘清林

作者机构：School of Materials Science and EngineeringCentral South UniversityChangsha 410083China State Key Laboratory of Power MetallurgyCentral South UniversityChangsha 410083China Baoshan Iron&Steel Co.Ltd.Shanghai 201900China Warwick Manufacturing GroupThe University of WarwickCoventryCV47ALUK Guangdong Weiye Aluminum Factory Group Co.Ltd.Foshan 528000China 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报(英文版))

年 卷 期：2025年第35卷第1期

页      面：60-76页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the Science and Technology Innovation Program of Hunan Province,China(No.2023RC3055) the Natural Science Foundation of Hunan Province,China(Nos.2023JJ30671,2020JJ4114) the Natural Science Foundation of Changsha City,China(No.Kq2208264) National Key Project of Research and Development Plan of China(Nos.2021YFC1910505,2021YFC1910504) the Young Core Teacher Foundation of Hunan Province,China(No.150220001) Key Research and Development Program of Guangdong Province,China(No.2020B010186002) the National Natural Science Foundation of China(No.51601229) the Key-Area Research and Development Program of Foshan City,China(No.2230032004640) 

主　　题：metal inert gas welding dissimilar joint aluminum alloy corrosion,microstructure 

摘      要：The corrosion behavior and microstructure characteristics of metal inert gas(MIG)welded dissimilar joints of the 6005A alloy modified with Sc(designated as 6005A+Sc)and the 5083 alloy were investigated using corrosion tests and microscopy *** show that the dissimilar joints exhibit strong stress corrosion cracking(SCC)resistance,maintaining substantial strength during slow strain rate tensile ***,the heat-affected zone(HAZ)and base metal(BM)on the 6005A+Sc side show superior performance in terms of inter-granular corrosion(IGC)and exfoliation corrosion(EXCO)compared to the corresponding zones on the 5083 *** lower corrosion resistance of the 5083-BM and the 5083-HAZ can be attributed to the presence of numerous Al_(2)Mg_(3)phases and micro-scaled Al_(6)(Mn,Fe)intermetallics,mainly distributed along the rolling ***,the enhanced corrosion resistance of the 6005A+Sc-BM and the 6005A+Sc-HAZ can be attributed to the discontinuously distributed grain boundary precipitates(β-Mg_(2)Si),the smaller grain size,and the reduced corrosive current density.