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Grain growth predictions in microalloyed steels

Journal Article


Abstract


  • Empirical models for grain growth predictions are briefly reviewed. It is demonstrated that such models are inadequate for quantitative prediction of austenite grain growth during reheating of as-cast microstructures in microalloyed steels. This inadequacy is mainly attributable to the inability of empirical models to account for abnormal grain growth. Basic principles of grain growth are therefore revisited in an attempt to develop a mathematical model which can account for abnormal grain growth. Such a model has been developed for Ti : N balanced microalloyed steels and is presented here. It is shown that quantitative predictions of austenite grain growth generated from this model fit well with experimental grain growth data obtained during reheating of as-cast slabs of Ti, Ti + Nb as well as Ti + Nb+Mo containing microalloyed steels.

Publication Date


  • 1996

Citation


  • Manohar, P. A., Dunne, D. P., Chandra, T., & Killmore, C. R. (1996). Grain growth predictions in microalloyed steels. ISIJ International, 36(2), 194-200. doi:10.2355/isijinternational.36.194

Scopus Eid


  • 2-s2.0-0030357514

Web Of Science Accession Number


Start Page


  • 194

End Page


  • 200

Volume


  • 36

Issue


  • 2

Abstract


  • Empirical models for grain growth predictions are briefly reviewed. It is demonstrated that such models are inadequate for quantitative prediction of austenite grain growth during reheating of as-cast microstructures in microalloyed steels. This inadequacy is mainly attributable to the inability of empirical models to account for abnormal grain growth. Basic principles of grain growth are therefore revisited in an attempt to develop a mathematical model which can account for abnormal grain growth. Such a model has been developed for Ti : N balanced microalloyed steels and is presented here. It is shown that quantitative predictions of austenite grain growth generated from this model fit well with experimental grain growth data obtained during reheating of as-cast slabs of Ti, Ti + Nb as well as Ti + Nb+Mo containing microalloyed steels.

Publication Date


  • 1996

Citation


  • Manohar, P. A., Dunne, D. P., Chandra, T., & Killmore, C. R. (1996). Grain growth predictions in microalloyed steels. ISIJ International, 36(2), 194-200. doi:10.2355/isijinternational.36.194

Scopus Eid


  • 2-s2.0-0030357514

Web Of Science Accession Number


Start Page


  • 194

End Page


  • 200

Volume


  • 36

Issue


  • 2