발간논문

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Vol.34, No.5, 596 ~ 603, 1996
Title
Research Paper - Mechanical Working - : Effect of δ - Ferrite and Sulphur Contents on the Hot Ductility of Type 304 Stainless Steel
이윤용Yun Yong Lee, 심상대Sang Dae Sim
Abstract
Effect of δ-ferrite and sulphur contents on the hot ductility of Type 304 stainless steel has been studied. The hot ductility of 304 steel was improved by the presence of about 8%δ-ferrite in as mast structure. It is due to the retardation of grain growth during continuous casting or reheating and the acceleration of recrystallization at γ/δ interfaces under the high temperature deformation conditions. The hot ductility of steel containing high sulphur was decreased drastically at temperatures below 1200℃ due to the reprecipitation of (Fe, Cr, Mn)_xS_y at grain boundaries by continuous cooling during hot rolling process.
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