|About this Abstract
||Materials Science & Technology 2020
||Metallurgy and Magnetism
||Processing of Fe-Co Alloys: Past and Present
||Zafer Turgut, Alex M Leary, John C Horwath, Gregory Kozlowski
|On-Site Speaker (Planned)
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.