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Comparative Study on the Corrosion Behavior of Materials in Heat Recovery Steam Generators for Combined Cycle Power Plant, Based on Sulfuric Acid Concentrations: Carbon Steels vs. Duplex Stainless Steel (UNS S32205)
복합화력발전 내 배열회수 보일러용 소재(탄소강 계열 및 듀플렉스 스테인리스강(UNS S32205))의 황산농도에 따른 부식거동 비교 연구

Yu Sung Jang, Jin Sung Park, Seung Gab Hong, Sung Jin Kim
장유성, 박진성, 홍승갑, 김성진

Korean J. Met. Mater. 2023;61(11):830-841. Published online 2023 Oct 29
DOI: https://doi.org/10.3365/KJMM.2023.61.11.830

Abstract
This study examined the effects of sulfuric acid concentrations on the corrosion behaviors of three types of commercial steels, conventional carbon steel (SA192), sulfuric acid dew resistant steel (S-TEN), and duplex stainless steel (S32205), considered to be potential materials for the heat recovery steam generator (HRSG) in combined cycle power..... More

Effect of Ni-based Fillers on Corrosion Resistance of Heat Affected Zone of Super Austenitic Stainless Steel (UNS S31254) Welded by GTAW
GTAW로 용접한 초내식성 오스테나이트계 스테인리스강 (UNS S31254) 열영향부의 내식성에 미치는 Ni계 용가재의 영향

Jin Sung Park, Dong Min Cho, Seung Gab Hong, Tae Ho Yun, Sung Jin Kim
박진성, 조동민, 홍승갑, 윤태호, 김성진

Korean J. Met. Mater. 2023;61(6):404-413. Published online 2023 May 18
DOI: https://doi.org/10.3365/KJMM.2023.61.6.404

Abstract
The effect of Ni-based fillers on corrosion resistance of welded super austenitic stainless steel (SASS) was examined. The use of Ni-based fillers for gas tungsten arc welded SASS leads to the formation of fine Cr-Mo enriched phase in its weld unmixed zone, which makes it more susceptible to the localized..... More

Corrosion Behaviors of Super Austenitic Stainless Steel Weld Joints in the As-Welded and Post Weld Heat Treated States
슈퍼 오스테나이트계 스테인리스강 (UNS S31254)의 용접 및 용접 후 열처리 상태에서의 부식거동

Dong min Cho, Jin-seong Park, Won Ki Jeong, Seung Gab Hong, Sung Jin Kim
조동민, 박진성, 정원기, 홍승갑, 김성진

Korean J. Met. Mater. 2021;59(6):374-383. Published online 2021 May 26
DOI: https://doi.org/10.3365/KJMM.2021.59.6.374

Abstract
The corrosion behaviors of a combined weld (plasma, gas tungsten arc) joint in a super austenitic stainless steel pipe were investigated using a range of experimental and analytical methods. To ensure superior corrosion resistance, a Ni-based super alloy (Inconel 625) was employed as the welding material only in the gas..... More

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