Ni-Mn-Ga shape memory alloys: modelling of magneto-mechanical behaviour
L Hirsinger - International Journal of Applied Electromagnetics …, 2004 - content.iospress.com
International Journal of Applied Electromagnetics and Mechanics, 2004•content.iospress.com
A predictive model of field-induced strain in Ni-Mn-Ga ferromagnetic shape memory alloys is
proposed. In this study, magnetocrystalline anisotropy K [TeX:] _1 is introduced to permit
magnetisation rotation in each martensitic platelets. The demagnetisation field induced by
the shape of platelet microstructure is investigated. As expected, the strain-induced by
magnetic field-in a single crystal is mainly given by the mobility of twin boundaries, by the
crystal anisotropy of martensite and by the shape anisotropy of platelet microstructure.
proposed. In this study, magnetocrystalline anisotropy K [TeX:] _1 is introduced to permit
magnetisation rotation in each martensitic platelets. The demagnetisation field induced by
the shape of platelet microstructure is investigated. As expected, the strain-induced by
magnetic field-in a single crystal is mainly given by the mobility of twin boundaries, by the
crystal anisotropy of martensite and by the shape anisotropy of platelet microstructure.
Abstract
A predictive model of field-induced strain in Ni-Mn-Ga ferromagnetic shape memory alloys is proposed. In this study, magnetocrystalline anisotropy K [TeX:] _1 is introduced to permit magnetisation rotation in each martensitic platelets. The demagnetisation field induced by the shape of platelet microstructure is investigated. As expected, the strain-induced by magnetic field-in a single crystal is mainly given by the mobility of twin boundaries, by the crystal anisotropy of martensite and by the shape anisotropy of platelet microstructure.
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