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Heat treatment induced martensitic accommodation and adaptive anisotropy in melt spun Ni55Mn22Ga23 (at. ) ribbonsPublished in
2012
DOI: 10.1063/1.4765739
Volume: 112
Issue: 10
The effect of annealing on melt spun Ni55Mn22Ga 23 (at. ) ribbon has been addressed in terms of structural, thermal, thermomagnetic, and magnetic field induced strain (MFIS) behaviour. In comparison to as-spun ribbons, the samples annealed within the L21 domain at 1073 K for 30 h with subsequent furnace cooling, showed a rise in martensitic transformation temperature. This was endorsed from electron microscopy studies revealing change in morphology of martensite plate and stacking of dislocations in a preferential orientation. The mechanism is associated to martensitic accommodation which enhanced ferro-elastic magnetic coupling and also lowered magnetic coercivity. Such accommodations and adaptive anisotropy improved the MFIS behavior in the annealed sample. © 2012 American Institute of Physics.
Topics: Magnetic shape-memory alloy (59)%59% related to the paper, Coercivity (54)%54% related to the paper, Magnetic anisotropy (53)%53% related to the paper, Diffusionless transformation (52)%52% related to the paper and Melt spinning (51)%51% related to the paper
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Content may be subject to copyright.This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publ... ...This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in [Heat treatment induced martensitic accommodation and adaptive anisotropy in melt spun Ni55Mn22Ga23(at. %) ribbons. Journal of Applied Physics 112, 10 p103512 (2012)] and may be found at https://doi.org/10.1063/1.4765739.
About the journal
| Journal | Journal of Applied Physics |
|---|---|
| ISSN | 00218979 |
| Open Access | No |
Authors (1)
Amitava Mitra- Department of Physics IIT Jodhpur
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