Superelasticity of strain glass Ti48.5Ni51.5

(a) superelasticity of strain glass Ti48.5Ni51.5 at 178K(=Tg)

(b) superelasticity of strain glass Ti48.5Ni51.5 at 173K(Tg+5K)

(Please wait for some time; then click “►” button in the upper window frame to replay the video; If the speed is too low, please click right mouse to download (a)-178K download (b)-173K and play it with windows media player.)

Explanation on the video:

Video (a) and video (b) show the vivid process of superelasticity for strain glass Ti48.5Ni51.5 at 178K(=Tg) and 173K(=Tg+5K), respectively. At 178K and 173K, the straight wire specimen can be severely bended. However, upon unloading, it recovers its original straight shape immediately.

See Yu Wang, Xiaobing Ren, and Kazuhiro Otsuka, PHYSICAL REVIEW LETTERS, 97, 225703 for details.