Dilatometric Analysis of Phase Transformation Involving Multi-Phase in Steel

초록

Dilatometric analysis is frequently used to figure out the overall phase transformation in steel. However, it is very difficult to separate the transformation for one phase from the others when transformation of two or more phases are superimposed. In this study, the rate of transformation(change of transformed volume fraction per unit time) was applied to step forward to get the individual transformation. Variation of the rate of transformation was first classified by simulating transformation kinetics determined by Avrami equations in the multi-phase system. The systematic analysis was carried out for the experimentally determined dilatation. The start, finish and peak of individual transformation were determined. They were compared with those determined by other methods.