Abstract
The stepwise character of the thermoelastic martensitic transformation in NiTi alloys is investigated in terms of the enthalpy changes connected with the transfomation. Differential scanning calorimetry has ben adopted to evidence the discontinuous heat flow developed during both the direct and reverse martensitic transformation. The results are examined at the light of a simplified fractal model advanced to describe the self-similarity of martensitic microstructures.
