The development of new ferromagnetic shape memory alloys in Ni-Mn-Ga system

The effect of compositional variations in the family of Ni-Mn-Ga based shape memory alloys on martensitic temperatures, thermal hysteresis, Curie temperature and transformation heat was investigated for the purpose of defining the structural and magnetic properties. Twenty-three different compositio...

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Bibliographic Details
Published in:Scripta metallurgica et materialia 1995-10, Vol.33 (8), p.1239-1244
Main Authors: Chernenko, V.A., Cesari, E., Kokorin, V.V., Vitenko, I.N.
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Metals. Metallurgy
Other ferromagnetic metals and alloys
Physics
Studies of specific magnetic materials
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Summary:The effect of compositional variations in the family of Ni-Mn-Ga based shape memory alloys on martensitic temperatures, thermal hysteresis, Curie temperature and transformation heat was investigated for the purpose of defining the structural and magnetic properties. Twenty-three different compositions with a sample weight of 120 g were prepared by repeated induction heating under argon atmosphere and cast into a copper mold. The results indicate that several structural types of martensite can be formed in this system by cooling and an alloy with given properties can be prepared in the Ni-Mn-Ga system.
ISSN:0956-716X
DOI:10.1016/0956-716X(95)00370-B