Abstract
Stress-induced martensitic transformation in a polycrystalline TiNi alloy (Ti-50.1 at.%Ni) has been investigated by following the instantaneous temperature change during deformation, the effects of strain rate on the kinetics of transformation and the calorimetric effects associated with the thermally induced transformation. Two separate stages of transformation strain and temperature increment are observed during stress-induced martensitic transformation in this alloy. Differential scanning calorimetry results show two exothermic peaks during cooling. The sum of the enthalpy changes for these two events is exactly equal to the single enthalpy change during martensite-to-parent transformation. It is proposed that the two stages of transformation strain and temperature rise during stress-induced transformation are related to the two calorimetric events in thermally induced transformation. It is shown that the stress-strain hysteresis loop as well as the two stages of temperature rise are influenced by the strain rate.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
