There are many indications that retained austenite in quenched plain carbon steels should be regarded as a face-centred tetragonally distorted structure and not face-centred cubic as heretofore.

In plain carbon steels, the nose of the TTT curve occurs at very short times, hence fast cooling rates are required to produce martensite. In thin sections of steel, a rapid quench can produce ...

Two plain carbon steels were chosen containing 0·89 per cent and 1·2 per cent carbon respectively. Nature - Structure of Tempered Martensite Skip to main content ...