Phase-field simulations of stress-strain behavior in ferromagnetic shape memory alloy Ni2MnGa

P. P. Wu, X. Q. Ma, J. X. Zhang, Long-qing Chen

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The evolution of strain, magnetic domain structure, and martensite microstructure during compressive stress loading and unloading of Ni2 MnGa was studied using a phase-field model at several selected magnetic fields. We observed a typical quasiplastic behavior at zero field and a pseudoelastic behavior at 300 kA/m. At an intermediate field, 150 kA/m, the stress-strain relation is partially pseudoelastic. It was demonstrated that the magnetic domain structure has little influence on the recovered strain while the demagnetization factor impacts the strain reversal.

Original languageEnglish (US)
Article number073906
JournalJournal of Applied Physics
Volume104
Issue number7
DOIs
StatePublished - Oct 22 2008

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shape memory alloys
magnetic domains
unloading
demagnetization
martensite
simulation
microstructure
magnetic fields

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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abstract = "The evolution of strain, magnetic domain structure, and martensite microstructure during compressive stress loading and unloading of Ni2 MnGa was studied using a phase-field model at several selected magnetic fields. We observed a typical quasiplastic behavior at zero field and a pseudoelastic behavior at 300 kA/m. At an intermediate field, 150 kA/m, the stress-strain relation is partially pseudoelastic. It was demonstrated that the magnetic domain structure has little influence on the recovered strain while the demagnetization factor impacts the strain reversal.",
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Phase-field simulations of stress-strain behavior in ferromagnetic shape memory alloy Ni2MnGa. / Wu, P. P.; Ma, X. Q.; Zhang, J. X.; Chen, Long-qing.

In: Journal of Applied Physics, Vol. 104, No. 7, 073906, 22.10.2008.

Research output: Contribution to journalArticle

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AU - Chen, Long-qing

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N2 - The evolution of strain, magnetic domain structure, and martensite microstructure during compressive stress loading and unloading of Ni2 MnGa was studied using a phase-field model at several selected magnetic fields. We observed a typical quasiplastic behavior at zero field and a pseudoelastic behavior at 300 kA/m. At an intermediate field, 150 kA/m, the stress-strain relation is partially pseudoelastic. It was demonstrated that the magnetic domain structure has little influence on the recovered strain while the demagnetization factor impacts the strain reversal.

AB - The evolution of strain, magnetic domain structure, and martensite microstructure during compressive stress loading and unloading of Ni2 MnGa was studied using a phase-field model at several selected magnetic fields. We observed a typical quasiplastic behavior at zero field and a pseudoelastic behavior at 300 kA/m. At an intermediate field, 150 kA/m, the stress-strain relation is partially pseudoelastic. It was demonstrated that the magnetic domain structure has little influence on the recovered strain while the demagnetization factor impacts the strain reversal.

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