Abstract
The rapid solidified Ti-Ni-Zr amorphous ribbon was crystallized to B2 phase and λ1 phase. The phase constitutions of Ti-Ni-Zr alloy ribbon were dependent on the annealing temperatures. The annealed ribbon with the annealing temperature of 773 K and 873 K consisted of B2 parent phase and λ1 phase. When the annealing temperature increased to 973 K, the B19′ martensite can be introduced except from the B2 phase and λ1 phase. With further increasing the annealing temperature to 1073 K, only B19′ martensite and λ1 phase was observed. The transformation temperatures increased successively with the increasing of the annealing temperature, which was closely related to the variation of the phase constituents. The annealed ribbons with the moderate annealing treatment showed the higher transformation temperature and the superior thermal cycling stability.
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