timokhina-asymmetricrolling-2014.pdf (1000.94 kB)
Asymmetric rolling of interstitial-free steel using differential roll diameters. Part II : microstructure and annealing effects
journal contribution
posted on 2013-01-01, 00:00 authored by D Orlov, Rimma LapovokRimma Lapovok, L Toth, Ilana Timokhina, Peter HodgsonPeter Hodgson, A Haldar, D BhattacharjeeThe effects of annealing on the microstructure, texture, tensile properties, and R value evolution of an IF steel sheet after room-temperature symmetric and asymmetric rolling were examined. Simulations were carried out to obtain R values from the experimental textures using the viscoplastic self-consistent polycrystal plasticity model. The investigation revealed the variations in the textures due to annealing and symmetric/asymmetric rolling and showed that the R values correlate strongly with the evolution of the texture. An optimum heat treatment for the balance of strength, ductility, and deep drawability was found to be at 873 K (600 _C) for 30 minutes.