Development of Ni-Mn-Ga based Ferromagnetic Shape Memory Alloy by Rapid Solidification Technique

Mitra, A and Panda, A K (2008) Development of Ni-Mn-Ga based Ferromagnetic Shape Memory Alloy by Rapid Solidification Technique. Ferromagnetic Shape Memory Alloys Book Series: Advanced Materials Research , 52. pp. 17-27.

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Abstract

solidification route by melt spinning has been adopted for preparation of a Ni52.5Mn24.5Ga23 (at %) ferromagnetic shape memory alloy in the form of ribbons. In the as-spun state, the ribbon revealed a predominant austenitic L2(1) structure in combination with martensitic feature as observed from x-ray diffraction studies. Transmission electron microscopic (TEM) evaluation showed these features in the form of martensitic plates. At low temperature, martensite to austenite transformation was exhibited by an increase in magnetization during heating cycle. The reverse effect was observed during cooling cycle. Annealing temperature and magnetising field was also found to effect this transformation.

Item Type: Article
Uncontrolled Keywords: Shape memory alloy; Melt-spun ribbons; martensitic transformation; Magnetisation
Subjects: Materials Science
Divisions: Material Science and Technology
Depositing User: Users 5 not found.
Date Deposited: 13 Jul 2011 06:44
Last Modified: 25 Jan 2012 05:17
URI: http://eprints.nmlindia.org/id/eprint/3290

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