Magneto-Mechanical Behaviour of Textured Polycrystals of NiMnGa Ferromagnetic Shape Memory Alloys

Abstract:

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Textured polycrystalline NiMnGa alloys were prepared by directional solidification. Alloys were chosen to have either the 7M or the 5M modulated martensitic structure after proper heat treatment. Mechanical training allowed to reduce the twin boundary pinning stress to below the magnetically induced stress. Thus, magnetic field induced changes in the mechanical behaviour could be demonstrated. The conditions of preparation and mechanical training will be discussed together with their influence on structure, microstructure, and the magneto-mechanical behaviour.

Info:

Periodical:

Edited by:

Lluis Mañosa, P.K. Mukhopadhyay and S.R. Barman

Pages:

29-34

DOI:

10.4028/www.scientific.net/AMR.52.29

Citation:

S. Roth et al., "Magneto-Mechanical Behaviour of Textured Polycrystals of NiMnGa Ferromagnetic Shape Memory Alloys", Advanced Materials Research, Vol. 52, pp. 29-34, 2008

Online since:

June 2008

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Price:

$35.00

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