Effect of Simultaneous Replacement of Fe with Zr and Ni in a Mechanically Alloyed Multicomponent Fe-Based Amorphous Alloy

摘要

In this study, Fe-based amorphous powder with a composition of Fe-40 Ni25Zr10Si10B15 (compound Q) was prepared by a partial replacement of Fe with Zr and Ni in a Fe75Si10B15 (compound P) via a mechanical alloying route. This substitution led to a decrease in amorphization time and consequently a significant improvement in thermal stability. The structure and thermal properties of the prepared powders were investigated by x-ray diffraction (XRD) pattern and differential scanning calorimetry (DSC), respectively. XRD and DSC results revealed that complete amorphization is achieved after 50 h of milling and glass forming ability width (Delta T-x) increases from 50 degrees C to 66 degrees C by substitution of Fe with Zr and Ni in compound P. Magnetic properties of the samples, investigated by vibrating sample magnetometry, indicated that in spite of a negligible decrease in saturation magnetization (M-s) by Fe replacement with Zr and Ni, the coercivity (H-c) shows a positive response to this change as a soft magnetic material, decreasing from 35 Oe to 15 Oe.