Study and modelling of the influence of second phase particles on the austenite grain growth in a niobium microalloyed steel

Authors

  • D. San Martín Fundamental of Advance Materials Group, Faculty of Aerospace Engineering
  • F. G. Caballero Grupo de Transformaciones de Fase en Estado Sólido de Aceros (MATERALIA) Departamento de Metalurgia Física, Centro Nacional de Investigaciones Metalúrgicas (CENIM)
  • C. Capdevila Grupo de Transformaciones de Fase en Estado Sólido de Aceros (MATERALIA) Departamento de Metalurgia Física, Centro Nacional de Investigaciones Metalúrgicas (CENIM)
  • C. García-de-Andrés Grupo de Transformaciones de Fase en Estado Sólido de Aceros (MATERALIA) Departamento de Metalurgia Física, Centro Nacional de Investigaciones Metalúrgicas (CENIM)

DOI:

https://doi.org/10.3989/revmetalm.2006.v42.i2.13

Keywords:

Austenite Grain grain growth, Nb microalloyed steel, Grain coarsening temperature, Modeling, Continuous heating

Abstract


The austenite grain growth occurred during continuous heating in a niobium microalloyed steel has been investigated in this work. The effect of temperature and heating rate on the grain size is studied. The free grain coarsening temperature is determined as a function of the heating rate. It is found that unpinning by precipitates occurs around 40-70K below the temperature of complete dissolution of carbonitrides. Furthermore, a new model has been proposed to describe the austenite grain coarsening under the influence of niobium carbonitrides during continuous heating at different rates.

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Published

2006-04-30

How to Cite

San Martín, D., Caballero, F. G., Capdevila, C., & García-de-Andrés, C. (2006). Study and modelling of the influence of second phase particles on the austenite grain growth in a niobium microalloyed steel. Revista De Metalurgia, 42(2), 128–137. https://doi.org/10.3989/revmetalm.2006.v42.i2.13

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