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|contributor.author||Mishra, S C||-|
|identifier.citation||Proceedings of RAMM-2012, 25-26 February 2012, VSS University of Technology, Burla, Odisha, India||en|
|description||Copyright belongs to proceeding publisher||en|
|description.abstract||Ferromagnetic shape memory alloys (FSMA) are a new class of potential multifunctional
materials with advancement over the conventional heat-driven shape memory alloys due to their
exceptional properties. FSMAs can be controlled by magnetic field have attracted considerable
attention as a type of magnetic actuator materials. Among the Heusler alloys that exhibit
magnetic shape memory effect, the most extensively studied are those of the Ni-Mn-Ga system.
However, to overcome some of the problems related to practical application, such as the high
cost of gallium and the low martensitic transformation temperature that they usually present, the
search for Ga-free alloys has been recently attempted. This paper aims to represent the behavior
of Ga free Ni-Mn-Sn Heusler FSMA by varying the weight percentage of Sn. Three alloys i.e.
Mn50Ni50-xSnx (x = 5, 7.5, and 10) were produced as bulk polycrystalline ingots by arc melting.
The structural austenite-martensite transformation was checked by Differential Scaning
calorimetry (DSC). It is found that, the transformation temperatures gradually decrease as
increasing the Sn content. Multiple martensitic transformations, such as two- or three-step
martensitic transformations, occur in all these alloy systems. Microstructure and elemental
composition of prepared specimen were examined by using a Scanning Electron Microscope
(SEM) equipped with a microanalysis system. Therefore, the present Ga-free Ni-Mn-Sn Heusler
FSMAs have the great possibility to use in high temperature application and can present a large
|subject||Ferromagnetic Shape Memory Alloys (FSMAs)||en|
|title||Analysis of Martensitic Transformation in Ni-Mn-Sn FSMA||en|
|Appears in Collections:||Conference Papers|
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