Characteristics of Ti-Ni-Zr Thin Film Metallic Glasses Exhibiting a Shape Memory Effect after Crystallization
We investigated characteristics of Ti-Ni-Zr amorphous thin films before and after annealing, in order to search for novel Ti-Ni-Zr thin film metallic glasses (TFMGs) that exhibit a shape memory effect after crystallization. We found that the Ti42Ni47Zr11 TFMG exhibited a stable shape memory effect after crystallization. This alloy showed a glass transition with the glass transition and crystallization temperatures of 703 and 760 K, respectively. Moreover, this alloy showed a one-step martensitic phase transformation of B2 to B19', when annealed at 973 K for 3.6 ks. The martensitic phase start temperature and reverse martensitic phase start temperature were 296 and 352 K, respectively. In addition, this alloy showed a recovery strain of about 2.4%.
Jian-Feng Nie and Allan Morton
J. Sakurai et al., "Characteristics of Ti-Ni-Zr Thin Film Metallic Glasses Exhibiting a Shape Memory Effect after Crystallization", Materials Science Forum, Vols. 654-656, pp. 1066-1069, 2010