ABSTRACT
The influence of various metallurgical parameters such as grain size, cold work and heat-treatment on the oxidation behaviour of 2 l/4Cr-IMo steel has been studied. Optical microscopy and other electron optical techniques such as SEM/EDX, EPMA and XRD have been used to study the scale morphologies and composition of the scale as well as the scale/metal interface. Preferential oxidation along grain boundaries, changes in the rate of oxidation as a result of prior cold work, and the role of secondary phases due to various heat-treatments on the oxidation behaviour have been investigated.
