One- and Two-Step Phase Transformation in Ti-rich NiTi
|Andersan S. Paula 1, Karimbi K. Mahesh 1, C.M.L. dos Santos 2, J.P.H.G. Canejo 1, F. M. Braz Fernandes 1|
1. Universidade Nova de Lisboa / Faculdade de Ciencias e Tecnologia (FCT/UNL), Torre, Monte de Caparica 2829-514, Portugal
The study of the thermoelastic martensitic transformation in NiTi Shape Memory Alloys (SMA) has been mainly focused on the effect of various thermal and/or mechanical treatments and chemical composition on the transformation temperatures. To determine the transformation temperatures conventional techniques, such as, Differential Scanning Calorimetry (DSC), Electrical Resistivity (ER), Internal Friction (IF) and Thermoelectric power etc., are made use of. During the phase transformation various physical parameters of the material are modified and each technique senses different physical phenomena. Therefore, the phase transformation sequences shall be analyzed on the basis of at least 2 or 3 techniques in order to avoid singularities of a specific technique.
Presentation: poster at E-MRS Fall Meeting 2005, Symposium C, by Karimbi K. Mahesh
See On-line Journal of E-MRS Fall Meeting 2005
Submitted: 2005-05-20 18:09 Revised: 2009-06-07 00:44