Increasing magnetoplasticity in polycrystalline Ni-Mn-Ga by reducing internal constraints through porosity.

Abstract

Foams with 55% and 76% open porosity were produced from a Ni-Mn-Ga magnetic shape-memory alloy by replication casting. These polycrystalline martensitic foams display a fully reversible magnetic-field-induced strain of up to 0.115% without bias stress, which is about 50 times larger than nonporous, fine-grained Ni-Mn-Ga. This very large improvement is… (More)

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Cite this paper

@article{Boonyongmaneerat2007IncreasingMI, title={Increasing magnetoplasticity in polycrystalline Ni-Mn-Ga by reducing internal constraints through porosity.}, author={Yuttanant Boonyongmaneerat and Markus Chmielus and David C. Dunand and Peter M{\"{u}llner}, journal={Physical review letters}, year={2007}, volume={99 24}, pages={247201} }