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Spinel (MgAl2O4) reactivity in molten steel

Conference Paper


Abstract


  • There is an ever increasing demand for cleaner steels, that is, those with low non-metallic inclusion content. This demand has driven research into improving our knowledge of reactivity of inclusions in liquid steel. In this study, spinel (MgAl2O4) inclusions of known composition/ phase and size distribution where added to the liquid steel bath prior to assessing their reactivity. The pO2 of the gas phase was controlled to 10-13 atm throughout the experiment. The inclusions were then tracked for changes in size, morphology and composition with time in an aluminium killed steel at 1600°C. It was found that the Mg:Al mass% ratio of the inclusions changed from -0.5 to 0.08. There was little change in the size of the spinel inclusions during the reaction. Full details of changes in Mg:Al mass% ratio, size and distribution of inclusions are reported and discussed.

UOW Authors


  •   Dogan, Neslihan (external author)
  •   Longbottom, Raymond
  •   Reid, Mark H.
  •   Chapman, Michael W. (external author)
  •   Wilson, Paton (external author)
  •   Moore, Les (external author)
  •   Monaghan, Brian

Publication Date


  • 2013

Citation


  • Dogan, N., Longbottom, R. J., Reid, M. H., Chapman, M. W., Wilson, P., Moore, L. & Monaghan, B. J. (2013). Spinel (MgAl2O4) reactivity in molten steel. Materials Science and Technology Conference (pp. 499-506). United States: Association for Iron and Steel Technology.

Scopus Eid


  • 2-s2.0-84893672854

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2150

Start Page


  • 499

End Page


  • 506

Abstract


  • There is an ever increasing demand for cleaner steels, that is, those with low non-metallic inclusion content. This demand has driven research into improving our knowledge of reactivity of inclusions in liquid steel. In this study, spinel (MgAl2O4) inclusions of known composition/ phase and size distribution where added to the liquid steel bath prior to assessing their reactivity. The pO2 of the gas phase was controlled to 10-13 atm throughout the experiment. The inclusions were then tracked for changes in size, morphology and composition with time in an aluminium killed steel at 1600°C. It was found that the Mg:Al mass% ratio of the inclusions changed from -0.5 to 0.08. There was little change in the size of the spinel inclusions during the reaction. Full details of changes in Mg:Al mass% ratio, size and distribution of inclusions are reported and discussed.

UOW Authors


  •   Dogan, Neslihan (external author)
  •   Longbottom, Raymond
  •   Reid, Mark H.
  •   Chapman, Michael W. (external author)
  •   Wilson, Paton (external author)
  •   Moore, Les (external author)
  •   Monaghan, Brian

Publication Date


  • 2013

Citation


  • Dogan, N., Longbottom, R. J., Reid, M. H., Chapman, M. W., Wilson, P., Moore, L. & Monaghan, B. J. (2013). Spinel (MgAl2O4) reactivity in molten steel. Materials Science and Technology Conference (pp. 499-506). United States: Association for Iron and Steel Technology.

Scopus Eid


  • 2-s2.0-84893672854

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2150

Start Page


  • 499

End Page


  • 506