Magnetic properties and shape memory effect of Fe-Mn-Cr-Si-R-B ferromagnetic shape memory alloys

This paper presents measured magnetic and shape memory properties of Fe-Mn-Cr-Si-R-B ribbons developed by means of the melt spinning technique in air. Here, R means a rare earth element. The alloys are multi-functional materials, which have both the ferromagnetic property and shape memory property. If we can simultaneously improve the material properties, the applications of the shape memory alloys will be widened dramatically in the field of the electromagnetic sensors and actuators. In order to improve ferromagnetic function of the Fe-Mn-Si based alloys, we have investigated to add rare earth elements. Also we have added Cr and B to improve corrosion resistance and to make ribbon samples directly by means of the melt spinning technique in air. In this paper, measured magnetic and shape memory properties of Fe-Mn-Cr-Si-R-B alloys were compared.