Istituto dei materiali per l'elettronica ed il magnetismo     
Chernenko V. A., Oikawa K., Chmielus M., Besseghini S., Villa E., Albertini F., Righi L., Paoluzi A., Mullner P., Kainuma R., Ishida K. Properties of Co-alloyed Ni-Fe-Ga ferromagnetic shape memory alloys. In: Journal of Materials Engineering and Performance, vol. 18 (5-6) pp. 548 - 553. Springer New York, 2009.
It is experimentally found that in the Ni54Fe20-xCoxGa26 ferromagnetic shape memory alloys, Co variation from 0 to 9 at.% leads to: (i) almost linear change of martensitic transformation temperatures from 270 C to 120 C; (ii) a non-monotonous change of the Curie temperature, and (iii) a linear decrease of saturation magnetization from 60 to 43 Am2/kg. The selected alloys grown as single crystals have been (magneto-)mechanically tested. The superelastic effect has been measured to be about 4%. The magneto-strain shows a training effect which is an evidence of the effect of magnetic-field-induced twin-boundary motion.
URL: http://www.springerlink.com/content/el7x74526397582g/fulltext.html
DOI: 10.1007/s11665-009-9425-7
Subject intermetallics
material selection
mechanical testing

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