J. Phys. IV France 115 (2004) 269
On the R-phase transformation related phenomena in NiTi polycrystals subjected to thermomechanical loadsP. Sittner1, D. Lugovyy2, D. Neov2, M. Landa3, P. Lukas2 and V. Novak1
1 Institute of Physics, ASCR, Na Slovance 2, 18221, Czech Republic
2 Nuclear Physics Institute, ASCR, 25068 Rez, Czech Republic
3 Institute of Thermodynamics, ASCR, Prague 8, 18221, Czech Republic
Results of in-situ neutron diffraction studies of the B2 R transformation and R-phase reorientation processes in thermal, mechanical and thermomechanical loads on NiTi alloy polycrystals are presented. It is discussed how the crystallographic features and structure instability of R-phase affects the macroscopic thermomechanical response of NiTi when the R-phase is involved.
© EDP Sciences 2004