Monitoring of phase transformations in steels by in-situ electrical resistance measurementsFoyer Bestandteil von:
This paper deals with the problem of non-destructive monitoring and characterization of phase transformations in steels. Determination of critical temperatures and phase transformations is of crucial importance for better understanding of kinetics and mechanisms of heat treatments of steels. The goal of our research work was to find out the use of electrical resistance measurements for monitoring of microstructural changes in steels. For this purpose, several steel grades (low carbon, hypoeutectoid, eutectoid and hypereutectoid) were thermal cycled and monitored by electrical resistance changes during heating and cooling. The results obtained with a novel measurement method were compared with metallographic analysis of microstructural changes during the heat treatment procedures.