Microstructure evolution and strength-reduction in area balance of ultrafine-grained steels processed by warm caliber rolling

Ultrafine grained steels with different carbon contents were produced through warm caliber rolling and evaluated for their stress-strain behavior along with the reduction in area. It was found that the reduction in area-tensile strength balance is far better than the conventional ferrite + pearlite steels and even superior to bainitic steels for all materials tested in the present study. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.