Effect of Hot Band Microstructural Factors on Recrystallization Texture in Ti-added Ultra-low Carbon Cold-rolled Sheet Steels

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An examination has been made of the effect of hot rolling conditions, considered as thermal history, on the deep drawability and recrystallization texture formation in Ti-added ultra-low carbon cold-rolled sheet steels. <br> The findings show that the average <I>r</I>-value of IF steel is significantly improved by refining the hot band grains, by decreasing the finish-rolling temperature in large thermal drop, to temperature even below the Ar<sub>3</sub> transformation temperature, during hot rolling process. However, the average <I>r</I>-values of sheets hot-rolled almost isothermally at a finish-rolling temperature below the Ar<sub>3</sub> transformation temperature deviate detrimentally, when compared with hot band of the same grain size. In this study, an attention has paid to the formation of texture throughout the hot rolling, cold rolling and annealing processes, in relation to deep drawability.

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  • ISIJ international  

    ISIJ international 38(6), 625-632, 1998-06-15 

    The Iron and Steel Institute of Japan

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