Model of microalloy precipitation during continuous casting and reheating

Kun Xu, Brian G. Thomas, Myra S. Dyer, John G. Speer, David K. Matlock, George S. Ansell

Research output: Contribution to journalConference article

Abstract

A comprehensive set of models of precipitate formation during steel processing has been developed. In this work, it is applied to investigate Nb(C,N) precipitation in thin microalloyed steel slabs during continuous casting, reheating in a tunnel furnace and water quenching relative to the position with the slab and alloy content. The models include a transient heat-conduction and solidification model of temperature evolution (CON1D), a multi-component equilibrium model of precipitate phase stability to compute the supersaturation, and a Particle-Size-Grouping (PSG) model to simulate the quantities, compositions, and size distributions of the precipitates as they evolve throughout the process. The results are compared with measurements conducted on steel samples obtained from the commercial plant. New insights into precipitate formation during hot-charging are presented.

Original languageEnglish (US)
Pages (from-to)773-783
Number of pages11
JournalAISTech - Iron and Steel Technology Conference Proceedings
StatePublished - 2011
Externally publishedYes
EventAISTech 2011 Iron and Steel Technology Conference - Indianapolis, IN, United States
Duration: May 2 2011May 5 2011

Keywords

  • Continuous casting
  • Equilibrium
  • Kinetic
  • Niobium
  • Particle-size-grouping models
  • Precipitate formation
  • Temperature

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering

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  • Cite this

    Xu, K., Thomas, B. G., Dyer, M. S., Speer, J. G., Matlock, D. K., & Ansell, G. S. (2011). Model of microalloy precipitation during continuous casting and reheating. AISTech - Iron and Steel Technology Conference Proceedings, 773-783.