Ricerc@Sapienza

NiTi shape memory alloys are widely used in various medical and aerospace products because of their outstanding preparties, namely superelasticity and shape memory effect. Joining of dissimilar NiTi shape memory wires can be applied in the design of smart components made up of different functionalities or properties. However, preserving the shape memory effect of the welded regions is really challenging due to the influence of laser heat on the microstructure and consequently activation temperature of the welded samples.

NiTi shape memory alloys are well-known due to their outstanding functional properties including superelasticity (SE) and Shape Memory Effect (SME). Laser welding is a viable technique for the joining of NiTi wires, which are employed in the design of smart structures. Joining of dissimilar wires can provide better flexibility using various alloys and, consequently, lead to multi-functional properties.