Microstructure and Mechanical Properties of Sputter-Deposited Ti-Ni Alloy Thin Films

1999 ◽  
Vol 121 (1) ◽  
pp. 2-8 ◽  
Author(s):  
A. Ishida ◽  
S. Miyazaki
Keyword(s):  
Thin Films ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
The Other ◽  
Shape Memory Behavior ◽  
Good Shape ◽  
Ni Alloy ◽  
Fine Microstructure ◽  
Sputter Deposited

The shape memory effect, superelasticity and two-way shape memory effect of Ni-rich Ti-Ni sputter-deposited thin films were evaluated quantitatively. The results indicated that they are almost comparable to those of bulk specimens. On the other hand, Ti-rich Ti-Ni thin films were found to exhibit a good shape memory behavior owing to a peculiar fine microstructure unlike bulk specimens. Addition of Cu or Pd to a Ti-50at.%Ni thin film was also confirmed to improve the shape memory behavior. These results suggest that shape memory thin films are a promising material for microactuators.

Shape memory effect in thin films of a Cu–Al–Ni alloy

2008 ◽  
Vol 481-482 ◽  
pp. 426-430 ◽  
Author(s):  
F.C. Lovey ◽  
A.M. Condó ◽  
J. Guimpel ◽  
M.J. Yacamán
Keyword(s):  
Thin Films ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Ni Alloy

Two-way shape memory effect of sputter-deposited Ti-rich Ti–Ni alloy films

2001 ◽  
Vol 312 (1-2) ◽  
pp. 227-231 ◽  
Author(s):  
Atsuo Gyobu ◽  
Yoshio Kawamura ◽  
Toshio Saburi ◽  
Makoto Asai
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Alloy Films ◽  
Ni Alloy ◽  
Sputter Deposited

High-Temperature Shape Memory Effect in Ti-Ta Thin Films Sputter Deposited at Room Temperature

2014 ◽  
Vol 1 (3) ◽  
pp. 1400019 ◽  
Author(s):  
Y. Motemani ◽  
P. J. S. Buenconsejo ◽  
C. Craciunescu ◽  
A. Ludwig
Keyword(s):  
Thin Films ◽  
High Temperature ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Room Temperature ◽  
Sputter Deposited

scholarly journals Net-Shape NiTi Shape Memory Alloy by Spark Plasma Sintering Method

2021 ◽  
Vol 11 (4) ◽  
pp. 1802
Author(s):  
Sneha Samal ◽  
Orsolya Molnárová ◽  
Filip Průša ◽  
Jaromír Kopeček ◽  
Luděk Heller ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Spark Plasma Sintering ◽  
Memory Effect ◽  
Niti Alloy ◽  
Niti Shape Memory Alloy ◽  
Good Shape ◽  
Plasma Sintering ◽  
Shape Memory Effects ◽  
Spark Plasma

An analysis of the shape memory effect of a NiTi alloy by using the spark plasma sintering approach has been carried out. Spark plasma sintering of Ti50Ni50 powder (20–63 µm) at a temperature of 900 °C produced specimens showing good shape memory effects. However, the sample showed 2.5% porosity due to a load of 48 MPa. Furthermore, an apparent shape memory effect was recorded and the specimens were characterized by uniformity in chemical composition and shape memory alloys of NiTi showed significant austenite phases with a bending strain recovery of >2.5%.

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