Journal
APPLIED PHYSICS LETTERS
Volume 101, Issue 23, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4769375
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- Japan Society for the Promotion of Science (JSPS)
- Grants-in-Aid for Scientific Research [22226011, 23686097] Funding Source: KAKEN
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Microstructure and martensitic transformation yielding a magnetic change were investigated for Fe43.5Mn34Al15Ni7.5 alloy with B2-type fine precipitates. Thermoelastic martensitic transformation from the ferromagnetic parent phase to the weak magnetic martensite with a nano-twinned fcc structure was confirmed. High-angle annular dark-field scanning transmission electron microscopic observation revealed that a beta particle of about 10 nm maintains coherency with the matrix martensite phase, even though distorted due to the martensitic transformation. The martensitic transformation temperatures decreased about 75K by application of a magnetic field of 70 kOe and magnetic field-induced reverse martensitic transformation was confirmed. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4769375]
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