Paper Titles
Mechanism of Microstructural Banding in Hot Rolled Microalloyed Steels
p.171
Evidence of Strain-Induced Precipitation on a Nb- and N-Bearing Austenitic Stainless Steel Biomaterial
p.179
Aspects of Production Hot Rolling of Nb Microalloyed High Al High Strength Steels
p.187
Modeling of the Resistance to Hot Deformation and the Effects of Microalloying in High-Al Steels under Industrial Conditions
p.195
Application of Deformation to Improve Hot Ductility in the Peritectic Steel
p.203
Problems Associated with Modeling Interpass Softening during Industrial Hot Strip Rolling
p.211
Modeling of the Microstructural Evolution and Mean Flow Stress during Thin Slab Casting/Direct Rolling of Niobium Microalloyed Steels
p.221
The Microstructure Evolution of Nb, Ti Complex Microalloyed Steel during the CSP Process
p.229
Vanadium Microalloyed Steel for Thin Slab Casting and Direct Rolling
p.237

Application of Deformation to Improve Hot Ductility in the Peritectic Steel

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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.

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Periodical:

Materials Science Forum (Volumes 500-501)

Pages:

203-210

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.500-501.203

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Online since:

November 2005

Authors:

Ahmad Rezaeian, Faramarz Zarandi, D.Q. Bai, Stephen Yue

Keywords:

Continuous Casting, Fractography, Hot Deformation, Hot Ductility, Peritectic Steel, Recrystallization, Thermal Schedule, V-Microalloyed Steel

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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