Abstract
The martensitic transformation and the R-phase transition were observed successively upon cooling and heating both in solution-treated and age-treated Ti–Ni specimens, and they wre correlated with the electrical resistance vs. temperature curves for both cases. Specific self-accommodating morphologies were observed both for the R-phase and martensite variants in an age-treated specimen, while no specific self-accommodating morphology was observed for martensite variants in a solution-treated specimen, the reason for the difference being discussed. The interaction between the R-phase and martensite variants was also observed to affect the morphology of the R-phase variants upon heating.
