|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XIX
||New (Fe0.5Co0.5)71.64B19.104Si4.776Nb3.98Cu0.5 Bulk Glassy Alloy: A Comprehensive Time-resolved Synchrotron X-ray Study
||Mihai Stoica, Gavin Vaughan, Jonathan Wright, Jörg F. Löffler
|On-Site Speaker (Planned)
Finemet and Vitroperm-type nanocrystalline alloys are very attractive for applications. Their particular nanostructure, consisting of (Fe,Si) grains embedded in a residual amorphous matrix, results from the thermal treatment of the metallic glass precursor. The magnetocrystalline anisotropy is averaged-out because of the very small dimension of the grains and their uniform distribution. This makes them extremely soft-magnetic, but mechanically quite fragile and brittle. Recently we demonstrated that by microalloying of Cu to a known bulk metallic glass-forming alloy one can obtain a similar structure in bulk form, which is more robust and reveals very good and tailorable soft-magnetic properties. The nanocrystallization process can be controlled over an interval of more than 100 K. Here we present a comprehensive study of this process by analyzing the reciprocal-space and direct-space data obtained from in-situ X-ray diffraction using high-energy, high-intensity synchrotron radiation.
||Characterization, Phase Transformations, Other