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Meeting Materials Science & Technology 2020
Symposium Metallurgy and Magnetism
Presentation Title Processing of Fe-Co Alloys: Past and Present
Author(s) Zafer Turgut, Alex M Leary, John C Horwath, Gregory Kozlowski
On-Site Speaker (Planned) Zafer Turgut
Abstract Scope Because it contains cobalt, Fe-Co is an expensive alloy and its magnetocrystalline anisotropy is higher than other soft magnetic materials. However, Fe-Co is the material of choice for many aerospace applications due to its unmatched saturation flux density, mechanical strength and temperature performance. There has been a little change in terms of how these alloys are processed into thin laminations over the years and only a handful of new compositions have emerged since its discovery. New aerospace initiatives seek several megawatts of on-board power generation and conversion, and require Fe-Co in the forms of even thinner laminations beyond what is possible by cold rolling and grain refined bulk forms as rotors for electromachines. This work reports our efforts of 1) powder metallurgy (PM) processing of bulk Fe-Co alloys with improved mechanical performance and 2) melt spinning+cold rolling processing to arrive at thinner laminations for improved frequency performance.


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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