The Role of Nucleation Behavior in Phase-Field Simulations of the Austenite to Ferrite Transformation

Three-dimensional (3-D) phase-field simulations of the austenite (?) to ferrite (?) transformation during continuous cooling at different cooling rates were performed for an Fe-0.10C-0.49Mn (wt pct) steel, with the aim of studying the interaction between the assumed nucleation temperature range and the effective interfacial mobility when fitting...

Experimental observations elucidating the mechanisms of structural bcc-hcp transformations in ?-Ti alloys

The formation mechanisms of two hcp ? phase morphologies in Ti-4.5Fe-6.8Mo-1.5Al have been investigated by optical microscopy (OM), atomic force microscopy (AFM), electron probe microanalysis (EPMA) and dilatometry. At relatively high temperatures primary ? forms predominantly on prior bcc ? grain boundaries, whereas at lower temperatures so...

A Model for Ferrite/Pearlite Band Formation and Prevention in Steels

A model for predicting the conditions under which ferrite/pearlite band formation occurs, and therefore the conditions in which it can be avoided in steels, has been developed. The model requires as input the alloy composition and microchemical segregation wavelength, and provides in turn the homogenization temperature and time in which the...

Effect of the geometry in modeling the kinetics of diffusional transformations in substitutional iron alloys

Ferrite formation in Fe-C alloys during austenite decomposition under non-equilibrium interface conditions

Neutron depolarization as a tool for studying phase transformations in steels

In-situ studies of the ferrite nucleation and growth in C-Mn steels

Ferrous phase transformation kinetics: A combined dilatometric-calorimetric approach