The microstructure of upper bainite consists of fine plates of ferrite, each of which is about 0.2 ... They are usually separated by low-misorientation boundaries or by cementite particles (see Fig. 6 ...

The formation of ferrite and iron carbide will start at the austenite grain boundaries and the final pearlite microstructure will have lamella of ferrite and cementite. This is illustrated on the ...