Processing of magnetic materials enhanced by magnetic or electric fields or currents

The comprehensive understanding of processes taken place in materials subjected to a treatment with an electric current of high density or been annealed in high magnetic field lingers on an empirical level and the potential of electric- and magnetic field assisted processing remains largely unexploited. Closing this gap will enable the prediction of the magnitudes of the required electrical or magnetic fields which would alter effectively microstructures and final properties through acceleration or retardation of phase formation reactions, stabilization of metastable phases, independent control of grain growth and texture as well as chemical order. The main objective of this project is to give good answers to the following general question: How can external magnetic fields or electric currents act on the arrangement of internal atomic defects, local structural or chemical disorder, phase formation and microstructure in such a controlled and efficient way that specific functional properties of the material become significantly enhanced in a positive manner? The essence of this proposal is the use of field/current-assisted processing to discover/develop advanced rare earth-free/lean high performance permanent magnets with the understanding of the effect of fields. At the heart of the research plan is a symbiotic partnership between theoretical and experimental activity. Importantly we will ensure a continual feedback between the theoretical and experimental groups.

Ansprechpartner: apl. Prof. Dr. Christian Elsässer
Tel: 0761 5142-286
Email: christian.elsaesser@iwm.fraunhofer.de

Projektbeginn: 01.10.2016
Projektende: 30.09.2019

Elsässer, C

Fraunhofer-Institut für Werkstoffmechanik IWM

Freiburger Materialforschungszentrum (FMF)

Stefan-Meier-Str. 21
79104 Freiburg i. Br.

Telefon: 0761-203 4711
Email: fmf@fmf.uni-freiburg.de
www.fmf.uni-freiburg.de

Prof. Dr. Oliver Gutfleisch, TU Darmstadt, Materialwissenschaft

• DFG