@inproceedings{897527bb019b41e9b85c2994e15cf2bf,
title = "Ultrafine grained dual-phase steels fabricated by warm deformation",
abstract = "Compared to conventional Dual-Phase (DP) steels produced by cold rolling and intercritical annealing, an ultrafine grained DP steel with 0.09 \% C and 2.1 \% Mn was produced by full austenitization at 900 °C followed by 70 \% deformation at 650 °C and immediate cooling using Gleeble simulation. The deformation of austenite at such a low temperature resulted in a microstructure consisting of \textasciitilde{}26 \% martensite and the balance being ferrite with an average grain size of 0.9 μm. High resolution field emission Scanning Electron Microscopy (SEM) and Electron Backscattered Diffraction (EBSD) revealed that the ultrafine grained ferrite contained large amounts of low-angle grain boundaries which suggest that the ferrite was mainly deformed. Isothermal holding at 650 °C for 2 hours after deformation, to simulate industrial coiling, resulted in mostly recrystallization and grain growth with an average ferrite grain size of 1.6 μm. Obtained results can be utilized for process optimization.",
keywords = "Dual-phase steel, Ultrafine grain, Warm deformation",
author = "R. Song and D. Barbier and J. Jun and N. Pottore",
year = "2010",
language = "English",
isbn = "9781617820328",
series = "Materials Science and Technology Conference and Exhibition 2010, MS and T'10",
pages = "1861--1868",
booktitle = "Materials Science and Technology Conference and Exhibition 2010, MS and T'10",
note = "Materials Science and Technology Conference and Exhibition 2010, MS and T'10 ; Conference date: 17-10-2010 Through 21-10-2010",
}