Crystallization Kinetics and Magnetic Properties of Fe<sub>40</sub>Ni<sub>40</sub>B<sub>20</sub> Bulk Metallic Glass

Abstract

Fe-based bulk metallic glasses (BMGs) have been extensively studied due to their potential technological applications and their interesting physical properties such as a low modulus of elasticity, high yielding stress and good magnetic properties. In the present work, the bulk metallic glass (BMG) formation of Fe 40 Ni 40 B 20 (numbers indicate at %) with a ribbon form was fabricated by the single roller melt-spinning method. Rapid solidification leads to a fully amorphous structure for all compositions. The thermal properties associated with crystallization temperature of the glassy samples were measured using differential scanning calorimetry (DSC) at a heating rate of 10˚C/mn. The microstructure and constituent phase of the alloy composite have been analyzed by using X-ray diffractometry (XRD). The effect of high temperature on the isothermal crystallization of Fe 40 Ni 40 B 20 ribbon was investigated by HTX-ray diffraction. In addition, these ribbon glasses also exhibit good soft magnetic properties with M-H curvature measured under the magnetic fields between -1 kOe and 1 kOe.

Enhancement of mechanical properties of a soft magnetic Fe-based metallic glass

“…Therefore, in our previous publications [5,15], GFA of a Fe-Mo-P-C-B BMG was enhanced by appropriate addition of Ni. Also, the effect of Ni addition on the GFA and ductility of other Fe-based BMGs such as [(Fe,Co,Ni) 0.75 B 0.2 Si 0.05 ] 96 Nb 4 [16], Fe-Ni-B-P-Nb [17], and Fe 40 Ni 40 B 20 [18] alloys have been investigated.…”