A phase-field model on the hysteretic magneto-mechanical behaviors of ferromagnetic shape memory alloy
作者： Q. Peng , Y.J. He , Z. Moumni
DOI: 10.1016/J.ACTAMAT.2015.01.044
关键词:
摘要: Abstract A phase-field model with a friction-type resistance in the kinetic equation for martensite reorientation is proposed to simulate coupled magneto-mechanical behaviors of ferromagnetic shape memory alloy (FSMA). The simulation able capture evolution microstructures (martensite twins and magnetic domains) rate-independent hysteresis associated responses under various quasi-static loading paths controlling mechanical stress or/and field. Phase diagrams are constructed, by summarizing many cases, demonstrate dependence material state variant level magnetization along external field) on loading. Particularly, critical levels stress/field trigger cases like Magnetic-Field Induced Strain (MFIS) field-assisted quasi-plasticity/pseudoelasticity (superelasticity) can be predicted, which agree experimental observations.
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