Revisiting Cu-based shape memory alloys: Recent developments and new perspectives

Abstract Cu-based shape memory alloys belong to one important class of functional alloys, presenting effect and superelasticity due their reversible martensitic transformation. Although they have been extensively studied since the middle last century, there are still many challenges be solved. In decades, these were regarding new compositions, processing routes, phase transformation, mechanical properties. Aspects thermoelastic transformation described using thermodynamic thermo-mechanical studies, while role metallurgical features (such as grain size morphology, ordering, precipitates second phases) mainly by phenomenological approach. this sense review discusses advances in general fundamentals recent developments applications years. Graphical abstract