Polycrystalline Ni-Mn-Ga as a Potential Material for Magnetically Driven Actuators

Abstract:

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Textured polycrystalline Ni-Mn-Ga alloys were prepared by directional solidification. Alloys were chosen to have the 5M modulated martensitic structure after proper heat treatment. A two-side mechanical training decreased the twin boundary pinning stress. The stress-strain behaviour for the training process and the magnetically induced stress depends on the training direction. Magnetic field induced strain was demonstrated in samples with a plate-like geometry. The influence of the microstructure on the magneto-mechanical behaviour is discussed.

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Periodical:

Edited by:

V.A. Chernenko

Pages:

129-137

DOI:

10.4028/www.scientific.net/MSF.684.129

Citation:

M. Pötschke et al., "Polycrystalline Ni-Mn-Ga as a Potential Material for Magnetically Driven Actuators", Materials Science Forum, Vol. 684, pp. 129-137, 2011

Online since:

May 2011

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Price:

$35.00

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