Microstructure and Mechanical Properties of Annealed Quinary Ni-Mn-Sn-Fe-In Heusler Alloy

Nambiar, Sandeep and Murthy, B R N and Sharma, S S and Prasanna, A and Chelvane, J (2022) Microstructure and Mechanical Properties of Annealed Quinary Ni-Mn-Sn-Fe-In Heusler Alloy. Engineered Science, 17. pp. 303-308. ISSN 2576-988X

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Abstract

The tuning of Heusler alloys with respect to the stoichiometry and their effect on martensitic transformation have been investigated very little by various researchers. Thus, the effect of change in ferrous (Fe) concentration of the alloys and its effect on mechanical and magnetocaloric properties of Ni50-xFexMn30Sn20-yIny alloys were investigated where Fe was varied from x= 1, 2, 3 and 4 to find its significance. An increase of Fe concentration to Fe4 leads to a considerable improvement in the alloy's mechanical properties and crystal structure. Compressive strength of the alloy rose by 123% for Fe4 substitution. When comparing the identical materials with and without Fe addition, the ultimate stress (US) and ductility are improved by 124 and 200%, respectively, while toughness rises by 48 times. The Fe concentration variation also enabled a martensitic transformation in 36.8 to 19.83 °C range of refrigerator applications.

Item Type: Article
Uncontrolled Keywords: Heusler alloys; Martensitic transformation; Magnetic refrigeration; Tensile strength; Brittleness.
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 23 Jun 2022 05:08
Last Modified: 23 Jun 2022 05:08
URI: http://eprints.manipal.edu/id/eprint/158835

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