scholarly journals Martensitic Transformation and Two-Way Shape Memory Effect of Sputter-Deposited Ni-Rich Ti-Ni Alloy Films

1999 ◽  
Vol 63 (2) ◽  
pp. 201-207
Author(s):  
Atsuo Gyobu ◽  
Yoshio Kawamura ◽  
Toshio Saburi ◽  
Hiroshi Horikawa
Keyword(s):  
Martensitic Transformation ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Alloy Films ◽  
Ni Alloy ◽  
Sputter Deposited

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

Shape Memory Effect in Co-Ni Polycrystalline Alloys

2005 ◽  
Vol 475-479 ◽  
pp. 2029-2032 ◽  
Author(s):  
Wei Min Zhou ◽  
Yan Liu ◽  
Bohong Jiang ◽  
Xuan Qi
Keyword(s):  
Martensitic Transformation ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Shape Recovery ◽  
Recoverable Strain ◽  
Ni Alloys ◽  
Ni Content ◽  
Polycrystalline Alloys ◽  
Ni Alloy

Co-Ni alloys exhibit g(fcc)®e(hcp) martensitic transformation and show reversible induced strain under applied magnetic field, which means they are potential magneto-shape-memory materials. Polystalline of Co-Ni alloys with varied Ni content were prepared. The g(fcc)®e(hcp) martensitic transformation and shape memory effect (SME) of Co-Ni alloy were studied. The influences of Ni content and deformation temperature on SME were discussed. The shape recovery rate and recoverable strain decrease with the increase of Ni content.

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.

Martensitic transformation, ductility, and shape-memory effect of polycrystalline Ni56Mn25 –xFexGa19alloys

2005 ◽  
Vol 96 (8) ◽  
pp. 843-846 ◽  
Author(s):  
Yunqing Ma ◽  
Lihong Xu ◽  
Yan Li ◽  
Chengbao Jiang ◽  
Huibin Xu ◽  
...  
Keyword(s):  
Martensitic Transformation ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect

scholarly journals Fabrication and Shape Memory Characteristics of Highly Porous Ti-Nb-Mo Biomaterials

2017 ◽  
Vol 62 (2) ◽  
pp. 1367-1370 ◽  
Author(s):  
Y.-W. Kim ◽  
T.W. Mukarati
Keyword(s):  
Martensitic Transformation ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Differential Scanning Calorimetric ◽  
Porous Scaffolds ◽  
High Porosity ◽  
Porous Ti ◽  
Human Body Temperature ◽  
Rapidly Solidified

AbstractNon-toxic Ti-Nb-Mo scaffolds were fabricated by sintering rapidly solidified alloy fibers for biomedical applications. Microstructure and martensitic transformation behaviors of the porous scaffolds were investigated by means of differential scanning calorimetric and X-ray diffraction. Theα″–βtransformation occurs in the as-solidified fiber and the sintered scaffolds. According to the compressive test of the sintered scaffolds with 75% porosity, they exhibit good superelasticity and strain recovery ascribed to the stress-induced martensitic transformation and the shape memory effect. Because of the high porosity of the scaffolds, an elastic modulus of 1.4 GPa, which matches well with that of cancellous bone, could be obtained. The austenite transformation finishing temperature of 77Ti-18Nb-5Mo alloy scaffolds is 5.1°C which is well below the human body temperature, and then all mechanical properties and shape memory effect of the porous 77Ti-18Nb-5Mo scaffolds are applicable for bon replacement implants.

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