3D Energy Analysis of Magnetic-Field Induced Martensite Reorientation in Magnetic Shape Memory Alloys

Abstract:

This paper explains the magnetic-field induced martensite reorientation in Ferromagnetic Shape Memory Alloys (FSMA) through a simple energy analysis from which the role of the martensite’s magnetic anisotropy is emphasized. In particularly, with a three-dimensional (3D) energy analysis, we study the switching between the three tetragonal martensite variants driven by a rotating magnetic field (with a constant magnitude) and a non-rotating magnetic field (with a fixed direction but varying magnitudes). Finally, a simple planar phase diagram is proposed to describe the martensite reorientation in general 3D loadings.

• Periodical: Materials Science Forum (Volumes 738-739)
• Pages: 400-404
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.738-739.400
• Online since: January 2013
• Authors: Yong Jun He, Xue Chen, Ziad Moumni
• Keywords: Deviatoric Stresses, Energy Analysis, Ferromagnetic Shape Memory Alloys (FSMAs), Martensite Reorientation, Phase Diagram, Three-Dimensional Loadings

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