Phase Transformation and Microstructures in Ni and Cu Base Ferromagnetic Shape Memory Alloys

Abstract:

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Effect of chemical composition was investigated on martensitic transformation temperatures, Curie temperature, magnetization and microstructures for Ni-(Mn, Fe, Co)-Ga and Cu-Mn-Ga systems. In the Ni-(Mn, Fe, Co)-Ga alloys, which is a modification of Ni-Mn-Ga systems, the Af and TC over 400 K were achieved. Cu-Mn-Ga alloy exhibited shape memory effect at temperatures above 373 K and had TC over 400 K. Furthermore, Cu-Mn-Ga exhibits good ductility even in polycrystalline condition unlike the case of Ni-Mn-Ga. Effect of addition of the fourth element to improve the magnetic property is under investigation.

Info:

Periodical:

Materials Science Forum (Volumes 539-543)

Main Theme:

Edited by:

T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran

Pages:

3157-3162

DOI:

10.4028/www.scientific.net/MSF.539-543.3157

Citation:

T. Kushima et al., "Phase Transformation and Microstructures in Ni and Cu Base Ferromagnetic Shape Memory Alloys", Materials Science Forum, Vols. 539-543, pp. 3157-3162, 2007

Online since:

March 2007

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$35.00

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