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Magnetic-field-induced changes in magnetic shape memory alloys
Materials Science and Engineering: A, 2008Abstract First-principles calculations have been used to investigate the physical properties of magnetic shape memory alloys. We find that the martensitic instability of the high-temperature cubic phase in X2YZ ( X = Fe , Co, Ni, Pd; Y = Mn , Fe, Co; Z = Al , Ga, Ge, In, Sn) is strongly influenced by the anomalous change of the ...
Entel, Peter +3 more
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Shape Memory Effect in Fe-Pd Magnetic Shape Memory Alloy Thin Films
Materials Science Forum, 2010The shape memory effect (SME) and magnetic shape memory effect (MSME) Fe-Pd thin film are using the film curvature method. The corresponding residual stress change due to theSME and MSME in Fe-Pd film is measuredduring thermal cycling and magnetic field changing.
Jun Hyun Han +3 more
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Shape memory and magnetic properties of Co–Al ferromagnetic shape memory alloys
Materials Science and Engineering: A, 2006Abstract Martensitic transformation from the face-centered cubic to the hexagonal close-packed structure, shape memory (SM) effect and magnetic properties in the Co–14 at.% Al alloy were investigated and the microstructures of the martensite were examined using transmission electron microscopy.
T. Omori +4 more
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Magnetic Shape Memory alloy based Fiber Bragg Grating magnetic field sensor
2006 5th IEEE Conference on Sensors, 2006The paper discusses a new device for magnetic field sensing, based on the integration of a fiber Bragg grating (FBG) with a magnetic shape memory alloy (MSMA). The latter is a new kind of material able to show extremely large strains in response to a magnetic field.
C. AMBROSINO +6 more
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Improved thermodynamic model for magnetic shape memory alloys
Smart Materials and Structures, 2012Magnetic shape memory alloys (MSMAs) are a class of materials that can exhibit up to 10% recoverable strain as a result of the application of either magnetic field or compressive stress. This unique property makes MSMAs potentially suitable for commercial applications such as sensors, power harvesters, or actuators.
Alex B Waldauer +3 more
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Behavior of Magnetic Shape Memory Alloys
2017The main advantage of magnetic shape memory alloys (MSMAs) over conventional shape memory alloys (SMAs) lies in the possibility for their actuation not only by stress or temperature but also by a magnetic field. This chapter is mainly devoted to the modeling of the thermo-magneto-mechanical behavior of single crystals under compressive loading ...
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Hysteretic Nonlinear Model of Magnetic Shape Memory Alloy
Applied Mechanics and Materials, 2011In this paper, a kind of Magnetic Shape Memory Alloy (MSMA) model based on hysteretic nonlinear theory was developed. Von del Pol nonlinear difference item was introduced to interpret the hysteresis phenomenon of strain-magnetic field intensity (MFI) curve of MSMA. The final relationship among strain, stress and magnetic field intensity was obtained in
Zhi Wen Zhu, Liang Gao, Jia Xu
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Neutron Diffraction Studies of Magnetic Shape Memory Alloys
Materials Science Forum, 2011The characteristics of neutron diffraction applied to the study of Ferromagnetic Shape Memory Alloys are revised. Main studies refer to crystal structure, preferential site occupancy, variant reorientation and magnetic moment distribution in the ...
José M. Barandiarán +3 more
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A Mechanism for Magnetically Driven Shape Memory Alloys
MRS Proceedings, 1999AbstractA mechanism for shape memory alloys driven by a magnetic field is proposed. The mechanism involves the motion of twin dislocations in response to the application of a magnetic field. As a consequence, twin variants oriented favorably with respect to the magnetic field direction will grow.
P. J. Ferreira, J. B. Vander Sande
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Additive manufacturing of magnetic shape memory alloys
Ni–Mn–Ga-based magnetic shape-memory alloys (MSMAs) are renowned for their large magnetic field–induced strains, making them attractive for compact magnetically controlled actuators requiring high response frequencies and large reversible deformations. This chapter aims to provide a structured framework for exploring the additive manufacturing (AM) of ...Ville Laitinen +2 more
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