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Meeting Materials Science & Technology 2020
Symposium Metallurgy and Magnetism
Presentation Title Processing of Vitreous Fe-based Wires into Nanostructured Soft Magnetic Material
Author(s) Ayodele Oladimeji Olofinjana, James Henry Kern, Nyok Y Voo
On-Site Speaker (Planned) Ayodele Oladimeji Olofinjana
Abstract Scope Ribbon shaped metallic glass annealed into nanocrystalline are known to exhibit unique soft magnetic properties. The magnetic softness is attributed to the averaging of the magneto-crystalline anisotropy due to the crystals smaller than the magnetic exchange correlation length. Since wire-shaped metallic glass are known exhibits uniquely soft magnetic properties, this work is, therefore, aimed at studying the devitrification of wire-shaped vitreous alloys. The devitrification of the wires were followed in a differential scanning calorimeter. The devitrification process is typically represented by two thermal events as event markers to follow the nano-crystallisation process. It is shown that only those compositions with large peak separations can be annealed to a single-phase nanocrystalline structure with an average grain size 10 -15nm. The formation of the nanostructure is guided using DSC peak separation and XRD line broadening is used to confirm the existence of nanosized α-Fe(Si) similar to the structure in magnetically soft finemet.


Comparative Studies on the Structure and Magnetic Properties of Mechanically Alloyed Fe40Co30Ni30 Medium-entropy Alloy in Argon and Ambient Atmospheres
Development of FeCo/MnZn Ferrite Composite by Field Assisted Sintering Technique
Effects of Steel Sensitization on Magnetic Properties Measured through MOKE Magnetometry
Exchange Coupled Ferromagnetism in Nanochessboards Obtained By Eutectoid Decomposition in the Co-Pt and Fe-Pt Systems
Improvement of the Magnetic Characteristics of Materials Due to the Formation of Unidirectional Boundaries of Ferrite during Processing in SHS Conditions
Introductory Comments: Metallurgy and Magnetism
Magnetic Performance of Gas-atomized Maraging Steel Powders
Microstructural Development and Mechanical Property Changes Due to Temper Embrittlement in HY-80 Submarine Steel
Modeling the Magnetostructural Interactions in Austenitic Steels at the Quantum Mechanical Level
Processing of Fe-Co Alloys: Past and Present
Processing of Vitreous Fe-based Wires into Nanostructured Soft Magnetic Material
Rapid Thermal Processing of Amorphous and Nanocrystalline Soft Magnetic Alloys
The Effect of Deformation of Low Alloy Steels Used in Metallurgy on Their Magnetic Characteristics
The Influence of the Microstructure Obtained After Processing in SHS Conditions on the Magnetic Characteristics of Steels

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