Before transforming to pearlite, this material phases through the two-phase zone (yellow) between austenite and ferrite. In cooling through this zone, ferrite is precipitated on the austenite grain ...

However, by quenching from the austenitic state to temperatures below the eutectoid temperature, ferrite can be formed down to temperatures as low as 600 C. There are pronounced morphological changes ...

Pearlite nuclei occur on austenite grain boundaries ... with both pro-eutectoid ferrite and cementite. In commercial steels, pearlite nodules can nucleate on inclusions. Figure 3.14: Isothermal ...

The eutectoid phase transition in the iron carbon system takes place at 727 C. The three components in equilibrium at this temperature are Austenite, g, with the composition Fe - 0.77 wt % C, Ferrite, ...