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논문 기본 정보

저자정보
(부경대학교) (부경대학교) (부경대학교) (경남지역사업평가단)
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한국동력기계공학회 동력시스템공학회지 한국동력기계공학회지 제19권 제6호
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    초록·키워드

    A deposited metal specimen of ER2594 which is a super duplex steel welding wire used to investigate the effect of sigma(σ) phase on electrochemical corrosion characteristics was prepared by gas tungsten arc welding. Aging treatment was conducted for the specimen at the temperature range of 700°C to 900°C for 5 to 300 minutes after annealing at 1050℃. Corrosion current density has decreased a little with an increase of aging time over 60 minutes at 700℃ to 900℃ and the uniform corrosion of deposited metal had more influence on the precipitation of ferrite than the precipitation of sigma phase. Therefore, the precipitation of sigma phase did not have much effect on the uniform corrosion. Pitting potential representing pitting corrosion has shown decreasing tendency as the precipitation of sigma phase increased. The degree of sensitization representing intergranular corrosion has shown increasing tendency as the precipitation of sigma phase increased at 700℃ to 800℃, while it has decreased at 900℃ for 60 to 300 minutes.

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      UCI(KEPA) : I410-ECN-0101-2016-550-002307071