Shape memory alloys (SMAs) exhibit unique functionalities due to their superelastic and shape properties. The ability program alter shapes following a thermomechanical stimulus makes them highly important materials for vast number of applications in the aerospace, automotive, biomedical, robotic sectors. Research on SMAs has largely focused metallurgical, mechanical, structural, or phase transf...

2014 Two disordered alloys, Au81Fe19 and Ni79Mn21, were cooled from ~ 100 K down to different temperatures in the range 1.2 K T 40 K, either in zero field or in a field ranging from 50 G to 28 kG. Their low-field hysteresis loops were then measured Near and above some characteristic temperature, TAT, identified as the de Almeida-Thouless temperature, the hysteresis loops of both alloys present ...

The superelastic behavior of coil springs of a Ti-Ni shape memory alloy was investigated using loading-unloading cycling tests under isothemal temperatures. The effects of the Ni content and shape memory treatment temperatures on the cyclic behavior in the superelastic deformation were investigated. The deformation behavior within the elastic region of the parent phase scarcely changes during t...