Interaction Deformation / Precipitation / Phase Transformation in Nb Micro-Alloyed Steels
Characterization of the phase transformation of Nb-micro-alloyed steels has to be performed taking into account the effect of deformation and precipitation. In the present investigation, the austenite to ferrite phase transformation is characterized in continuous cooling experiments after deformation at high temperature. The resulting phase transformation kinetics and microstructure showed an influence of the soaking temperature. Detailed investigations of the possible causes of the change of mechanism of phase transformation indicate that the amount of niobium in solution correlates with the slowing down in phase transformation kinetics.
Yves Bréchet, Emmanuel Clouet, Alexis Deschamps, Alphonse Finel and Frédéric Soisson
P. Thibaux et al., "Interaction Deformation / Precipitation / Phase Transformation in Nb Micro-Alloyed Steels", Solid State Phenomena, Vols. 172-174, pp. 735-740, 2011