Assessment of the compacting and annealing process steps on the performance of finished Soft Magnetic Composite components
Paper in proceedings, 2015

Cores for electromagnetic applications made of Soft Magnetic Composite (SMC) materials consist of individually electrically insulated magnetic iron particles, processed by conventional powder metallurgy (PM) routes. The core loss characteristics of a finalized SMC component are related to the process treatments that it has been subjected to. In this context, the effect of uniaxial compaction and annealing steps has been assessed for different pressure and temperature regimes by means of electron backscatter diffraction (EBSD) and nano-indentation techniques. Deformation maps obtained with EBSD were coupled with nano-mechanical testing, denoting the degree of induced stresses and their relaxation in the cross sections of the parts. The development of the internal microstructure and extent of mechanical deformation under processing were also evaluated and correlated to the performance of the parts under question. The results reveal a more direct approach for determining the relationship between magnetic properties and processing treatment of SMC components.

internal microstructure

mechanical deformation

Electron Backscatter Diffraction (EBSD)

nanoidentation

Soft Magnetic Composites (SMC)

Author

Christos Oikonomou

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

Daniel Castillo Gutiérrez

Universidad Carlos III de Madrid

Miguel Monclús

IMDEA Materials Institute

Jon Mikel Molina-Adareguia

IMDEA Materials Institute

Lars Nyborg

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

Euro PM2015 Proceedings, 4-7 October 2015

Subject Categories

Metallurgy and Metallic Materials

Composite Science and Engineering

Areas of Advance

Materials Science

ISBN

978-1-899072-47-7

More information

Latest update

3/23/2018