2013 Fiscal Year Final Research Report
Phase Transition from BCC Phase in Fe-Mn-based Alloys with Anomalously Small Entropy Change
| Project/Area Number |
23686097
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Structural/Functional materials
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| Research Institution | Tohoku University |
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Principal Investigator |
OMORI Toshihiro 東北大学, 工学(系)研究科(研究院), 助教 (60451530)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | マルテンサイト変態 / 鉄合金 / 超弾性 / 形状記憶 |
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| Research Abstract |
The martensitic transformation from the alpha phase (BCC) to the gamma phase (FCC) in Fe-based alloys including Fe-Mn-Al-based alloy was investigated. It was found from the thermodynamic analysis that this phase transformation can occur due to the suppression of the magnetism of the alpha phase. It was also found that the thermoelastic transformation is obtained by the addition of Ni. Moreover, the Fe-Mn-Al-Ni alloy exhibits the superelasticity in a wide temperature range. The superelastic strain was strongly dependent on the microstructure and the grain size control was one of the most important factors.
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[Journal Article] Magnetotransport Properties of Fe_<48>Mn_<24>Ga_<28> Heusler Alloys2013
Author(s)
V. V. Khovaylo, T. Omori, K. Endo, X. Xu, R. Kainuma, A. P. Kazakov, V. N. Prudnikov, E. A. Gan'shina, A. I. Novikov, Yu. O. Mikhailovsky, D. E. Mettus, A. B. Granovsky
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Journal Title
Physical Review
Volume: B 87
Pages: 174410
DOI
Peer Reviewed
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