Abstract
Transformation behaviors and shape memory characteristics of Ti 50Ni 30Cu 20 (at.%) alloy ribbons prepared by melt spinning were investigated by means of differential scanning calorimetry, X-ray diffraction, and optical microscopy. The alloy was solidified as amorphous ribbon by a melt spinning process. After annealed at 440 °C for 10 min, the crystallized ribbon was deformed up to about 6.8% in ductile manner. A temperature hysteresis associated with the B2–B19 transformation was observed to be 4 K. These properties are mainly attributed to the controlled microstructures of the alloy ribbon.
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