Paper Title:
Modeling of the Resistance to Hot Deformation and the Effects of Microalloying in High-Al Steels under Industrial Conditions
  Abstract

The hot strip rolling of advanced microalloyed high strength steels still represents a new task to many mills due to the lack of data on the hot deformation resistance. With the aid of processing data from the Ispat-Inland hot strip mill, the “measured mean flow stresses” are calculated from the mill force using the Sims analysis and taking into account roll flattening, slip ratio and the redundant strain. A modification of the Misaka mean flow stress equation is proposed for C – Mn – Si – Al steels microalloyed with up to 0.02 % Nb. The effects of alloying and microalloying are then estimated. A new fitting parameter shows excellent agreement with the mean flow stress data from industrial processing of advanced high strength microalloyed steels. However, during the second half of the rolling schedule (lower temperature region), indications of austeniteto- ferrite transformation were found.

  Info
Periodical
Materials Science Forum (Volumes 500-501)
Edited by
J.M. Rodriguez-Ibabe, I. Gutiérrez, B. López and A. Iza-Mendia
Pages
195-202
DOI
10.4028/www.scientific.net/MSF.500-501.195
Citation
F. Siciliano, E. I. Poliak, "Modeling of the Resistance to Hot Deformation and the Effects of Microalloying in High-Al Steels under Industrial Conditions ", Materials Science Forum, Vols. 500-501, pp. 195-202, 2005
Online since
November 2005
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Price
$35.00
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