Singh, Satnam and Roy, P K and Ghosh, M and Mitra, A and Panda, A K (2013) Martensitic transformation and magneto-strain in melt spun NiMnGaAl Ferromagnetic Shape Memory Alloys. Intermetallics, 43 (IF-1.857). pp. 147-151.
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Ni55Mn22Ga23−xAlx (0 ≤ x ≤ 5) melt spun ribbons homogenized at 1073 K for 30 h exhibited an elevation in martensitic transformation onsets and a reduction in Curie temperature with increase in Al content. The phenomenon has been attributed to different site occupancy by Al, exchange coupling and paramagnetic martensite during thermal and magnetic transitions. Transmission Electron microscopy revealed systematic patterns of dislocations in alloy with x = 1, which become denser at high Al content. X = 1 alloy revealed high magnetic field induced strain (MFIS) value it is attributed to a critical combination of austenite and martensite phase.
|Uncontrolled Keywords:||Shape memory effect; Magnetic properties; Martensitic transformations; Rapid solidification processing; Martensitic structure|
|Divisions:||Material Science and Technology|
|Deposited By:||Dr. A K Sahu|
|Deposited On:||27 Sep 2013 10:45|
|Last Modified:||27 Sep 2013 10:45|
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