Two main forms can be identified: upper and lower bainite. The microstructure of upper bainite consists of fine plates of ferrite, each of which is about 0.2 ?m thick and about 10 ?m long. The plates ...

To achieve this, the steel must be quenched at a rate sufficiently rapid to avoid the decomposition of austenite during cooling to such products as ferrite, pearlite and bainite. The effectiveness of ...