The influence of composition and thermomechanical treatments on the magnetic shape memory effect of Ni-Mn-Ga single crystals

2004 ◽  
Author(s):  
Leon M. Cheng ◽  
Shannon P. Farrell ◽  
Rosaura Ham-Su ◽  
Calvin V. Hyatt
Keyword(s):  
Shape Memory ◽  
Single Crystals ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Magnetic Shape Memory

Modeling and FEM Simulation of Shape Memory Microactuators

2008 ◽  
Vol 583 ◽  
pp. 229-256 ◽  
Author(s):  
Berthold Krevet ◽  
Manfred Kohl
Keyword(s):  
Shape Memory ◽  
Single Crystals ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Performance Prediction ◽  
Fem Simulation ◽  
Phenomenological Approach ◽  
Polycrystalline Materials ◽  
Magnetic Shape Memory ◽  
Insight Into

This article reports on two models for the shape memory effect and explains, how they are implemented in a finite element method program. The first model uses a phenomenological approach. For the example of a microgripper, the performance prediction of real actuators made of polycrystalline materials is demonstrated. In the second model, the martensite-austenite phase transition is treated as a thermodynamically activated process. Thermodynamic laws, like e.g. the minimization of the Gibbs free energy, are used for the formulation. To simplify the model, it is primarily intended to describe the behavior of single crystals. By comparing the simulated bending characteristic of a cantilever beam with experimental data, the applicability to polycrystalline material is tested. Due to the physics based formulation, this model gives more insight into the structural processes involved. This is very useful, e.g., for physical extensions needed for the simulation of the magnetic shape memory effect. It is shown, how the model can be extended to predict the behavior of actuators made of ferromagnetic Ni-Mn-Ga single crystals in a magnetic field.

scholarly journals Room temperature magnetic shape-memory effect in strontium-doped lanthanum cobaltite single crystals

AIP Advances ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 095217
Author(s):  
A. Yokosuka ◽  
H. Kumagai ◽  
M. Fukuda ◽  
K. Ando ◽  
Y. Hara ◽  
...  
Keyword(s):  
Shape Memory ◽  
Single Crystals ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Room Temperature ◽  
Magnetic Shape Memory ◽  
Lanthanum Cobaltite

scholarly journals Temperature Dependence of Pseudoelasticity and Shape Memory Effect in Fe3Ga Single Crystals with D03 Structure

2008 ◽  
Vol 48 (7) ◽  
pp. 1014-1019 ◽  
Author(s):  
Hiroyuki Y. Yasuda ◽  
Kouki Fukushima ◽  
Mitsuhiro Aoki ◽  
Yukichi Umakoshi
Keyword(s):  
Shape Memory ◽  
Temperature Dependence ◽  
Single Crystals ◽  
Shape Memory Effect ◽  
Memory Effect

Superelasticity and two-way shape memory effect in [0 0 1]-oriented TiNiCu single crystals under compression

2020 ◽  
Vol 281 ◽  
pp. 128646
Author(s):  
I.V. Kireeva ◽  
Z.V. Pobedennaya ◽  
Y.I. Chumlyakov ◽  
E.S. Marchenko
Keyword(s):  
Shape Memory ◽  
Single Crystals ◽  
Shape Memory Effect ◽  
Memory Effect

High-temperature superelasticity and the shape-memory effect in [001] Co-Ni-Al single crystals

2009 ◽  
Vol 107 (2) ◽  
pp. 194-205 ◽  
Author(s):  
Yu. I. Chumlyakov ◽  
E. Yu. Panchenko ◽  
A. V. Ovsyannikov ◽  
S. A. Chusov ◽  
V. A. Kirillov ◽  
...  
Keyword(s):  
High Temperature ◽  
Shape Memory ◽  
Single Crystals ◽  
Shape Memory Effect ◽  
Memory Effect

Temperature Dependence of Magnetic Shape-Memory Effect and Martensitic Structure of NiMnGa Alloy

2002 ◽  
Vol 394-395 ◽  
pp. 537-540 ◽  
Author(s):  
Nadiya Glavatska ◽  
G. Mogylny ◽  
Ilya Glavatskyy ◽  
A. Tyshchenko ◽  
Outi Söderberg ◽  
...  
Keyword(s):  
Shape Memory ◽  
Temperature Dependence ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Martensitic Structure ◽  
Magnetic Shape Memory
Sign in / Sign up

Export Citation Format

Share Document