한국표면공학회지 (42권1호 34-40)
Evaluation of Electrochemical and Mechanical Characteristics in MIG Welding Parts of Dissimilar Al Alloys for Ship
선박용 이종 알루미늄 합금 미그 용접부의 기계적 및 전기화학적 특성 평가
우용빈;김성종;
Woo, Yong-Bin;Kim, Seong-Jong;
목포해양대학교 대학원 응용역학.재료공학;목포해양대학교 기관시스템공학부;
Division of Marine Engineering, Graduate School, Mokpo National Maritime University;Division of Marine Engineering, Mokpo National Maritime University;
In the study, it was carried out dissimilar metal welding on materials for Al ship. The electrochemical and mechanical characteristics evaluated for specimen welded by ROBOT. The hardness of welding zone is lower than those of heat affected zone and base metal. At the result of tensile test, the specimen welded with ER5183 welding material presented excellent property compared with ER5556. The polarization trend for the base metal and welding metal showed the effects of concentration polarization due to oxygen reduction and activation polarization due to hydrogen generation. At the Tafel experiments result, the corrosion density in welded with ER5183 welding material presented the lowest value.
Dissimilar Al alloys;MIG welding;Mechanical characteristics;Electrochemical characteristics;
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