Progress of Cryogenics and Isotopes Separation , ISSN: 1582-2575
2011, Volume 14, Issue 2

Shape Memory Behavior and One-Way Shape Memory Effect of a NiTi Shape Memory Bands

Alina Niculescu * , Ioan Stefanescu , Amalia Soare , Mihai Vijulie , Sebastian Brad

National Institute for Research and Development for Cryogenics and Isotopic Technologies - ICIT Rm. Valcea, Uzinei Street no. 4, P.O. Box Raureni 7, 240050, Ramnicu Valcea, Romania

*Corresponding author: Alina Niculescu, E-mail:

Published: October 2011


To define the alloy’s shape, this is constrained under deformation and then heat treated. The one-way shape memory effect in a NiTi high temperature shape memory alloy  has been systematically studied by bending tests. In the NiTi alloy, the martensite deformation is an effective method to get two-way shape memory effect even with a small deformation strain. Internal structure and shape memory behavior of NiTi bands heat-treated at 100 K, 200 K, and 300 K were investigated by Scanning Electron Microscopy (SEM) and X-ray fluorescence at room temperature. The NiTi shape memory bands were supplied by Memry Company, with following thickness: 0.05mm, 0.5mm, 1.25mm, 0.203mm.  The results showed that the NiTi bands possess super-elastic properties, and the transformation temperature is 113°C; also, it has been noticed that the alloy has a higher content of titanium and exhibit shape memory effect.


Ni-Ti shape memory alloys, one-way shape memory effect, shape memory effect, martensite.

Tag search Ni-Ti shape memory alloys one-way shape memory effect shape memory effect martensite