Role of microstructure on the actuation fatigue performance of Ni-Rich NiTiHf high temperature shape memory alloys

2019 ◽  
Vol 175 ◽  
pp. 107-120 ◽  
Author(s):  
O. Karakoc ◽  
C. Hayrettin ◽  
A. Evirgen ◽  
R. Santamarta ◽  
D. Canadinc ◽  
...  
Keyword(s):  
High Temperature ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Fatigue Performance

scholarly journals Cyclic degradation of titanium–tantalum high-temperature shape memory alloys — the role of dislocation activity and chemical decomposition

2015 ◽  
Vol 08 (06) ◽  
pp. 1550062 ◽  
Author(s):  
T. Niendorf ◽  
P. Krooß ◽  
C. Somsen ◽  
R. Rynko ◽  
A. Paulsen ◽  
...  
Keyword(s):  
High Temperature ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Elevated Temperatures ◽  
Nickel Titanium ◽  
Chemical Decomposition ◽  
Ω Phase ◽  
The Matrix ◽  
Cyclic Degradation

Titanium–tantalum shape memory alloys (SMAs) are promising candidates for actuator applications at elevated temperatures. They may even succeed in substituting ternary nickel–titanium high temperature SMAs, which are either extremely expensive or difficult to form. However, titanium–tantalum alloys show rapid functional and structural degradation under cyclic thermo-mechanical loading. The current work reveals that degradation is not only governed by the evolution of the ω-phase. Dislocation processes and chemical decomposition of the matrix at grain boundaries also play a major role.

Role of Fe addition in Ni–Mn–Ga–Co–Cu–Fe ferromagnetic shape memory alloys for high-temperature magnetic actuation

2020 ◽  
Vol 196 ◽  
pp. 549-555
Author(s):  
Anabel Pérez-Checa ◽  
Jose M. Porro ◽  
Jorge Feuchtwanger ◽  
Patricia Lázpita ◽  
Thomas C. Hansen ◽  
...  
Keyword(s):  
High Temperature ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Magnetic Actuation ◽  
Ferromagnetic Shape Memory Alloys ◽  
Ferromagnetic Shape Memory ◽  
Fe Addition

Actuation fatigue performance of NiTiZr and comparison to NiTiHf high temperature shape memory alloys

2022 ◽  
Vol 829 ◽  
pp. 142154
Author(s):  
O. Karakoc ◽  
K.C. Atli ◽  
O. Benafan ◽  
R.D. Noebe ◽  
I. Karaman
Keyword(s):  
High Temperature ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Fatigue Performance

Effects of Testing Parameters on the Fatigue Performance NiTiHf High Temperature Shape Memory Alloys

2019 ◽  
Author(s):  
Omer Karakoc ◽  
Alexander Demblon ◽  
Robert W. Wheeler ◽  
Dimitris C. Lagoudas ◽  
Ibrahim Karaman
Keyword(s):  
High Temperature ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Fatigue Performance

Effects of training on the thermomechanical behavior of NiTiHf and NiTiZr high temperature shape memory alloys

2020 ◽  
Vol 794 ◽  
pp. 139857 ◽  
Author(s):  
O. Karakoc ◽  
K.C. Atli ◽  
A. Evirgen ◽  
J. Pons ◽  
R. Santamarta ◽  
...  
Keyword(s):  
High Temperature ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Thermomechanical Behavior

Role of Si in Improving the Shape Recovery of FeMnSiCrNi Shape Memory Alloys

2011 ◽  
Vol 42 (8) ◽  
pp. 2153-2165 ◽  
Author(s):  
Bikas C. Maji ◽  
Madangopal Krishnan ◽  
Gouthama ◽  
R. K. Ray
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Shape Recovery

scholarly journals Effect of Ni-Content on the Transformation Temperatures in NiTi-20 at. % Zr High Temperature Shape Memory Alloys

Metals ◽  
2017 ◽  
Vol 7 (11) ◽  
pp. 511 ◽  
Author(s):  
Matthew Carl ◽  
Jesse Smith ◽  
Brian Van Doren ◽  
Marcus Young
Keyword(s):  
High Temperature ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Transformation Temperatures ◽  
Ni Content
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