Temperature Memory Effect of Partial Transformation in TiNi Alloys
TiNi合金不完全相变的温度记忆效应

Temperature memory effect of a prestrained TiNi alloy under constraint condition was studied by differential scanning calorimetry (DSC). Results showed that the transformation temperature range of the TiNi alloy can be significantly enlarged upon prestraining and constrained heating, which makes the temperature memory effect operational also in an enlarged temperature window. Furthermore, the temperature memory effect of the prestrained and constrained TiNi alloy is more accurate than that of a TiNi alloy in free conditions. The dislocations at the interface between the parent phase and the remaining martensite, and the self-accommodating process near the interface are thought to be the mechanism for the temperature memory effect.