Shape memory behavior of TiNi alloy films sputter-deposited on polyimide substrate

2013 ◽  
Vol 577 ◽  
pp. S210-S214 ◽  
Author(s):  
Yoichi Kishi ◽  
Noriaki Ikenaga ◽  
Noriyuki Sakudo ◽  
Zenjiro Yajima
Keyword(s):  
Shape Memory ◽  
Tini Alloy ◽  
Alloy Films ◽  
Shape Memory Behavior ◽  
Polyimide Substrate ◽  
Sputter Deposited

INFLUENCE OF POROSITY ON SHAPE MEMORY BEHAVIOR OF POROUS TiNi SHAPE MEMORY ALLOY

2008 ◽  
Vol 01 (03) ◽  
pp. 215-219 ◽  
Author(s):  
JIANYU XIONG ◽  
YUNCANG LI ◽  
PETER D. HODGSON ◽  
CUI'E WEN
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Tini Alloy ◽  
Compression Tests ◽  
X Ray Diffraction ◽  
Recoverable Strain ◽  
Strain Concentration ◽  
X Ray ◽  
Shape Memory Behavior ◽  
Porous Ti

Porous Ti -50.5at.% Ni shape memory alloy (SMA) samples with a range of porosities were prepared by spacer sintering. The porous structure of the alloy was examined using scanning electron microscopy (SEM). The phase constituents of the porous TiNi alloy were determined by X-ray diffraction (XRD). The shape memory behavior of the porous TiNi alloy was investigated using loading–unloading compression tests. Results indicate that the porous TiNi alloy exhibits superelasticity and the recoverable strain by the superelasticity decreases with the increase of porosity. After a prestrain of 7%, the superelastically recovered strains for the porous TiNi alloy samples with porosities of 46%, 59%, 69% and 77% are 2.0%, 1.8%, 1.5% and 1.3%, respectively. The pores in the TiNi alloy samples cause stress/strain concentration, as well as crack initiation, which adversely affect the shape memory behavior of the porous TiNi alloy.

scholarly journals Microstructures and Shape Memory Behavior of a TiNi Alloy Tube Made from a Ni-coated Ti Wire

2015 ◽  
Vol 2 ◽  
pp. S775-S778
Author(s):  
Y. Kishi ◽  
Z. Yajima ◽  
C. Shiomi ◽  
T. Matsumoto ◽  
T. Ohigashi ◽  
...  
Keyword(s):  
Shape Memory ◽  
Tini Alloy ◽  
Shape Memory Behavior ◽  
Alloy Tube

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

Microstructures and thermomechanical properties of sputter-deposited NiTi(Fe) shape memory alloy films

1998 ◽  
Vol 34 (3-6) ◽  
pp. 312-317
Author(s):  
F.F Gong ◽  
X.L Wen ◽  
H.M Shen ◽  
Y.N Wang ◽  
E.Y Jiang
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Thermomechanical Properties ◽  
Alloy Films ◽  
Sputter Deposited

scholarly journals Microstructure of TiNi shape memory alloy films made of sputter-deposited Ni/Ti multilayers

2006 ◽  
Vol 55 (3) ◽  
pp. 1508
Author(s):  
Wei Xiang-Jun ◽  
Xu Qing ◽  
Wang Tian-Min ◽  
Jia Quan-Jie ◽  
Wang Huan-Hua ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Alloy Films ◽  
Sputter Deposited

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.

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