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Snap-acting transformation and snap-acting two way shape memory(TWSM)effect have been obtained in NiTi alloy usingthe constrained effect of stress on the driving force of TWSM element.The TWSM strain of the snap-acting element made ofNi_(51)Ti_(49) alloy finishes abruptly at an acertain temperature without any additional mechanism,within an interval less than 1 ms.Athermodynamic model is presented to account for these observations.
Snap-acting transformation and snap-acting two way shape memory (TWSM) effect have been obtained in NiTi alloy using the constrained effect of stress on the driving force of TWSM element. The TWSM strain of the snap-acting element made of Ni_ (51) Ti_ (49) alloy finishes abruptly at an acertain temperature without any additional mechanism, within an interval less than 1 ms.Athermodynamic model is presented to account for these observations.