The increase of the martensitic deformation during shape memory effect in deformed TiNi
Firstov, Georgiy × Koval, Yuri Lotkov, Aleksandr Grishkov, Victor Van Humbeeck, Jan #
World Scientific Publishing Co. Pte. Ltd.
Functional Materials Letters vol:5 issue:1
The evolution of the ultrafine structure, obtained at thermal treatment below recrystallization, and its effect onto shape memory characteristics in NiTi alloy was under study. It was shown that low temperature annealing (< 0.5 Tmelt) of the hot rolled NiTi leads to the structure refinement accompanied by the growth in accumulated martensite deformation. It was suggested that this is possible due to the increase of the volume fraction of martensite crystals properly oriented in respect to external stress.