pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (35권2호 23-28)
Influence of the Cooling Rate on the Phase Precipitation of Super Duplex Stainless Steel
슈퍼 듀플렉스 스테인리스강의 응고·냉각 시 상석출에 미치는 냉각속도의 영향
Eun Seok Jang, Ki Young Kim and Suk Jun Kim
School of Energy·Materials·Chemical Engineering, Korea University of Technology & Education
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 1550oC in a directional solidification furnace. Ferrite (δ), Austenite (γ), Sigma (σ), and Chi (χ) 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, σ and χ phases were not precipitated.
Duplex stainless steel, Solidification, Precipitate, Cooling rate
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