Abstract
The present work aims to study the influence of the applied stress on the characteristics of the martensitic transformation. Measurements of differential scanning calorimetry (DSC) and electrical resistance (RE) were carried out for the thermal characterisation of the samples tested. Mechanical characterisation effectuated on a tensile testing machine under stress was also performed. It has been also shown that the application of stress causes an increase of the plastic deformation (martensitic and austenitic phase), which results in a two-way memory effect, which remains substantially stable regardless of the applied stress. We estimated in a qualitative manner the rate of defects is introduced during thermomechanical cycling under different constraints, a thermal cycling unconstrained in order to compare their microstructures of our samples with that of the reference one (without cycling).
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