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Temperature rise of high-frequency martensite reorientation via Type II twin boundary motion in NiMnGa Ferromagnetic Shape Memory Alloy

  • ParisTech
  • Northwestern Polytechnical University

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

Résumé

We measured the temperature rise of the high-frequency magnetic-field-induced martensite reorientation in Ni-Mn-Ga Ferromagnetic Shape Memory Alloy and observed the morphology of the associated twin boundaries. It was found that this temperature rise is mainly caused by low-friction Type II twin boundary motion, even though high-friction Type I twin boundary motion is dominant in quasi-static stress-induced martensite reorientation. A simple formula considering the frictional twin boundary motion and heat transfer is derived to describe this temperature rise.

langue originaleAnglais
Pages (de - à)71-74
Nombre de pages4
journalScripta Materialia
Volume104
Les DOIs
étatPublié - 15 juil. 2015
Modification externeOui

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