from the conferences organized by TANGER Ltd. provisional website
This paper deals with the influence of the experimental conditions settings of the chosen DTA method on obtained data. The article is focused on the study of heating rate effect on shifting of liquidus temperature (TL) of Fe-CCr based systems (steels). Heating rate belongs to the frequently and easily changing parameter and its influence on the obtained data is substantial. DTA measurements were realised using the SETARAM Setsys 18TM laboratory system. The samples (steels) were analysed at selected controlled heating rates (1, 2, 5, 10 and 20 K / min). It has been found that the value of liquidus temperature shifted with the increasing heating rate towards to the higher values and this dependence was expressed. Application of obtained results can substantially contribute to minimising the influence of the used heating rate mode on the liquidus and enables an extrapolation to the so called "zero" heating rate. It is thus possible to obtain for the investigated systems the liquidus temperatures close to the equilibrium temperatures without necessity of making set of experimental measurements, which is highly time-consuming.Keywords: DTA, heating rate, liquidus temperature, steel
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