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Deformation behavior of a Nb-Ti-V microalloyed steel to achievethe HSLA X80 grade by simulation with a torsion test and pilot hot rollingmill

Published online by Cambridge University Press:  02 January 2013

D. Berdjane ,
M.L. Fares ,
M. Baccouche  and
A.N. Lemmoui
D. Berdjane
Affiliation:
Département de Métallurgie et Génie des Matériaux, Université Badji-Mokhtar d’Annaba, BP 12, 23000, Algérie. e-mail: berdjamel@yahoo.fr Unité de Recherche Appliquée en Sidérurgie et Métallurgie (URASM-CSC/Annaba), El-Hadjar/Annaba, 23000, Algérie
M.L. Fares
Affiliation:
Département de Métallurgie et Génie des Matériaux, Laboratoire de Mécanique des Matériaux et de Maintenance Industrielle (LR3MI), Université Badji-Mokhtar d’Annaba, BP 12, 23000, Algérie
M. Baccouche
Affiliation:
Département de Métallurgie et Génie des Matériaux, Laboratoire de Métallurgie physique et matériaux (LM2P), Université Badji-Mokhtar d’Annaba, BP 12, 23000, Algérie
A.N. Lemmoui
Affiliation:
Département de Métallurgie et Génie des Matériaux, Laboratoire de Métallurgie physique et matériaux (LM2P), Université Badji-Mokhtar d’Annaba, BP 12, 23000, Algérie
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Abstract

In the present study, the main objective is to improve the mechanical properties of ahigh steel HSLA grade such as X80 for welded pipes. A study was conducted to optimise thethermomechanical treatment and to attain the mechanical properties of the X80 grade ofHSLA steels. From the same chemical composition of the hot rolled X60 grade Nb-Ti-Vmicroalloyed strip steel, we want to enlarge the production to the superior X80 gradetype. Dilatometry tests, hot torsion and hot rolling using a pilot mill allowed thesimulation of operating process sequences. The results of the rolling schedules performedin a pilot mill allowed us to analyse the effect of the deformation parameters(temperature conditions and reduction) on the evolution of the final structure and themechanical properties of the Nb-Ti-V microalloyed steel.

Keywords

Hot rollingHSLA steelssimulationpilot millmechanical properties
Type
Research Article
Information
Metallurgical Research & Technology , Volume 109 , Issue 6: Light Alloys for Transport , 2012 , pp. 465 - 475
Copyright
© EDP Sciences 2013

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