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In thls study, the effects of the composltional change of cast Ni-Ti alloys on its characteristics including mechanical properties, phase transformation temperature, and ion releasing rate were investigated. brittle:behavior was shown in the stress-strain curve of the alloy containing low Ti content (Ni-44.0%Ti). By increasing the Ti content, the trend in stress-strain curves changed from that of superelasticity to that of shape memory effect(Ni-44.4%Ti, Ni-45.1%Ti, Pfi-45, 5%Ti). Phase transformation temperature (A, M point) increased with increasing the Ti content. lon releasing rate of four types of Mi-Ti alloys was very low compared to that of the dental commerical Ni-Cr alloy.
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