Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Mechanical properties and immersion characteristics of sensitinized STS310S, STS316L and STS347H in the range of 480~720℃

480~720℃에서 예민화한 STS310S, STS316L 및 STS347H의 기계적 성질 및 침지 특성

  • Kim, Young-Soo (Graduate School, Pukyong National University) ;
  • Lee, So-Young (Graduate School, Pukyong National University) ;
  • Do, Jae-Yoon (Busan campus, Korea Polytechnics VII) ;
  • Ahn, Seok-Hwan (Department of Mechatronics, Jungwon University) ;
  • Nam, Ki-Woo (Department of Materials Science and Engineering, Pukyong National University)
  • 김영수 (부경대학교 대학원) ;
  • 이소영 (부경대학교 대학원) ;
  • 도재윤 (한국폴리텍 7대학 부산캠퍼스) ;
  • 안석환 (중원대학교 메카트로닉스공학과) ;
  • 남기우 (부경대학교 재료공학과)
  • Received : 2016.03.22
  • Accepted : 2016.05.30
  • Published : 2016.06.30
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Abstract

The current study was carried to understand the immersion characteristics and mechanical properties of heat treated stainless steels. Stainless steels (STS310S, STS316L and STS347H) were thermally treated at temperature ranges from 480 to $720^{\circ}C$. Nominal stress was determined to be slightly different depending on the heat treatment temperature. The Cr concentration in STS310S was increased at the temperatures of 600 and $660^{\circ}C$, whereas the Cr concentration in STS316L and STS347H were almost constant regardless of heat treatment temperatures. Vickers hardness was found larger as a thermal treatment temperature was increased. Immersion tests of the stainless steels were also carried out in acidic solution and alkaline solution for 240 hours. Among three different stainless steels, the pitting was detected in the acidic solution, not in the alkaline solution. The pitting of STS347H was occurred more than STS310S and STS316L.

Keywords

References

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