Survey of the in situ configuration of cold-rolled, nickel-rich NiTi sheets to create variable component functions

An outstanding feature of shape memory alloys is their potential to produce different functional effects, like thermal shape memory or superelasticity in one component. ld-rolled NiTi sheet strips presented in this study offer various options, since they do not feature perceptible thermal shape memory or superelasticity due to a high dislocation density. Instead, to achieve a specific local function, the sheet strips are subjected to in situ heat treatment carried out by a laser or a local resistive heating element. There is a need to adjust the duration and intensity of the heat input in order to obtain different functional properties.