발간논문

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Vol.22, No.12, 1176 ~ 1182, 1984
Title
High temperature Deformation behaviors of Columnar Structure of Continuously Cast Fe - 3 % Si Steel
문희경Hee Kyung Moon, 김정태Chung Tae Kim
Abstract
Restoration behavior during single-pass hot rolling of wedge shaped specimen taken from a columnar region of continuously cast Fe-3% Si steel slab was investigated in the temperature range 950-1250℃, where (α＋γ) two phases exist. At lower temperatures (950-1050℃) a critical amount of reduction was required to render recrystallizatmn; smaller reduction produced deformed structures. At higher temperatures (1100-1200℃) recovered structure was observed at small reduction while recrystallization occurred over a critical reduction, The plastic deformation was observed to lead to marked acceleration of α→γtransformation. It was assumed that this transformed austenite give the sites of recrystallization by formation of deformed bands in ferrite matrix. The critical reduction to start austenitic transformation was nearly consistent with the reduction to start recrystallization. The nose was about 1100℃.
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