Paper Title:

Development of Asymmetric Rolling for the Better Control over Structure and Mechanical Properties in IF Steel

Periodical Materials Science Forum (Volumes 706 - 709)
Main Theme THERMEC 2011
Chapter Chapter 22: Thermomechanical Processing - Prof J. Jonas Symposium
Edited by T. Chandra, M. Ionescu and D. Mantovani
Pages 2788-2793
DOI 10.4028/www.scientific.net/MSF.706-709.2788
Citation Dmitry Orlov et al., 2012, Materials Science Forum, 706-709, 2788
Online since January 2012
Authors Dmitry Orlov, Rimma Lapovok, László S. Tóth, Ilana B. Timokhina, Peter D. Hodgson, Debashish Bhattacharjee, Arunansu Haldar
Keywords Asymmetric Rolling, IF Steel, Mechanical Property, Microstructure, Texture
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In the present study, the effects of kinematic and geometric asymmetries in rolling during multi-pass processing of IF steel are examined. The theoretical investigation by final element simulations and experimental investigations by means of electron-backscatter diffraction analysis and tensile tests suggest that asymmetric rolling increases the total imposed strain compared to symmetric rolling, and largely re-distributes the strain components due to additional shear. This enhances the intensity of grain refinement, strengthens and tilts crystallographic orientations, and increases mechanical strength. The effect is highest in the asymmetric rolling with differential roll diameters.