Thermal and structural study of Ni–Fe–Ga ferromagnetic shape memory alloys

Some thermal and structural characteristics of Ni–Fe–Ga alloys were studied by means of differential scanning calorimetry (DSC), thermo mechanical analysis (TMA), and X-ray diffraction techniques. It was observed that martensitic transition temperature rapidly decreases and Curie temperature increas...

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Bibliographic Details
Published in:Journal of alloys and compounds 2008-08, Vol.462 (1), p.442-445
Main Authors: Alvarado-Hernández, F., Soto-Parra, D.E., Ochoa-Gamboa, R., Castillo-Villa, P.O., Flores-Zúñiga, H., Ríos-Jara, D.
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Ferromagnetic shape memory alloy
Martensitic transformation
Martensitic transformations
Materials science
Ni–Fe–Ga
Phase diagrams and microstructures developed by solidification and solid-solid phase transformations
Physics
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Summary:Some thermal and structural characteristics of Ni–Fe–Ga alloys were studied by means of differential scanning calorimetry (DSC), thermo mechanical analysis (TMA), and X-ray diffraction techniques. It was observed that martensitic transition temperature rapidly decreases and Curie temperature increases with Fe content. The order–disorder transition temperature from a L2 1 to A2 structures grows linearly with iron content, as measured by TMA. TMA has been found as a useful tool to perform these characterizations.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2007.08.075