Ferromagnetic to weak-magnetic transition accompanied by bcc to fcc transformation in Fe-Mn-Al alloy

K. Ando, T. Omori, Ikuo Ohnuma, R. Kainuma, K. Ishida

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Abstract

Magnetic properties and phase change in Fe-36 at. %Mn-15 at. %Al ternary alloy were investigated. Direct evidence of a ferromagnetic to weak-magnetic transition accompanied by martensitic transformation from the bcc-α (A2) phase to the fcc-γ′ (2M) phase was obtained, where the magnetic state of the parent and the martensite phases are ferromagnetic and weak-magnetic, respectively. The origin of this unique phase change is caused by the peculiar γ-loop of α/γ equilibrium formed in Fe-Mn-X (X: ferrite stabilizing element) system due to the magnetic effect.

Original languageEnglish
Article number212504
JournalApplied Physics Letters
Volume95
Issue number21
DOIs
Publication statusPublished - 2009 Dec 14

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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