Abstract
The paper investigates the effect of the roll speed ratio on the deformation characteristics of interstitial free (IF) steel processed by the differential speed rolling (DSR) technique. An intense plastic strain induced by a single DSR with various roll speed ratios ranging from 1:1 to 1:4 for the lower and upper rolls was successfully imparted to the samples, resulting in the formation of fine elongated ferrite grains as the roll speed ratio increased. Observations of the preferred orientation using electron back-scattered diffraction and transmission electron microscopy revealed that the {110} slip was readily activated as the dominant deformation mode in order to accommodate the intense plastic strain imposed by the DSR. In addition, the microhardness values of the IF steel sample deformed via DSR under a roll speed ratio of 1:4 increased, and this is discussed on basis of the frictional force between the roll and the sample during DSR deformation.
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Ko, Y.G., Suharto, J., Lee, J.S. et al. Effect of roll speed ratio on deformation characteristics of IF steel subjected to differential speed rolling. Met. Mater. Int. 19, 603–609 (2013). https://doi.org/10.1007/s12540-013-3033-7
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DOI: https://doi.org/10.1007/s12540-013-3033-7