21 July 2004 Magnetic forces controlling magnetic shape memory in Ni-Mn-Ga and their practical measurement from the mechanical testing experiments in constant magnetic fields
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Abstract
Performing mechanical testing experiments in all the different martensitic phases of Ni-Mn-Ga under the constant magnetic field applied perpendicular to the load direction we show that such a magnetic field can dramatically modify standard zero field strain stress relationships of MSMA's like Ni-Mn-Ga. In a particular case of 5M and 7M martensites we observe a so-called pseudo-elastic or rubber-like behavior during the standard compression-decompression cycling under the field at about 1T. This effect is finally discussed from the point of the general thermodynamic background and some particular modeling concepts.
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Alexander A. Likhachev, Alexander A. Likhachev, Alexei Sozinov, Alexei Sozinov, Kari Ullakko, Kari Ullakko, } "Magnetic forces controlling magnetic shape memory in Ni-Mn-Ga and their practical measurement from the mechanical testing experiments in constant magnetic fields", Proc. SPIE 5387, Smart Structures and Materials 2004: Active Materials: Behavior and Mechanics, (21 July 2004); doi: 10.1117/12.539766; https://doi.org/10.1117/12.539766
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