Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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Influence of the Cooling Rate on the Phase Precipitation of Super Duplex Stainless Steel

슈퍼 듀플렉스 스테인리스강의 응고·냉각 시 상석출에 미치는 냉각속도의 영향

  • Jang, Eun Seok (School of Energy.Materials·Chemical Engineering, Korea University of Technology & Education) ;
  • Kim, Ki Young (School of Energy.Materials·Chemical Engineering, Korea University of Technology & Education) ;
  • Kim, Suk Jun (School of Energy.Materials·Chemical Engineering, Korea University of Technology & Education)
  • 장은석 (한국기술교육대학교 에너지 신소재 화학공학부) ;
  • 김기영 (한국기술교육대학교 에너지 신소재 화학공학부) ;
  • 김석준 (한국기술교육대학교 에너지 신소재 화학공학부)
  • Received : 2015.03.02
  • Accepted : 2015.04.02
  • Published : 2015.04.30
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Abstract

This work presents the effect of the cooling rate on the precipitation of super duplex stainless steel. Specimens of super duplex stainless steel with a specific composition were cooled at various cooling rates after being melted at $1550^{\circ}C$ in a directional solidification furnace. Ferrite (${\delta}$), Austenite (${\gamma}$), Sigma (${\sigma}$), and Chi (${\chi}$) phases were precipitated when the cooling rate was lower than 0.22 K/s. When the cooling rate was 0.22 K/s or faster, ${\sigma}$ and ${\chi}$ phases were not precipitated.

Keywords

References

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  1. Variation of Mechanical Properties and Corrosion Properties with Mo Contents of Hyper Duplex Stainless-Steel Welds pp.2005-4149, 2018, https://doi.org/10.1007/s12540-018-0166-8