6533b823fe1ef96bd127f3f9

RESEARCH PRODUCT

Rapid nanocrystallization of soft-magnetic amorphous alloys using microwave induction heating

S. VaucherK. IshizakiM. StirJose M. Catala-civeraR. Nicula

subject

Materials scienceInduction heatingAmorphous metalMechanical EngineeringMetallurgyMetals and AlloysSynchrotron radiationCondensed Matter Physicslaw.inventionMechanics of MaterialslawEddy currentGeneral Materials ScienceCrystallizationComposite materialOhmic contactMicrowavePowder diffraction

description

The crystallization of Fe73Nb3Cu1Si16B7 alloy during microwave heating was investigated in situ using synchrotron radiation powder diffraction. The phase transformation comprises a primary nanocrystallization stage and a final microcrystallization step. We provide evidence for a strong enhancement of the transformation kinetics. Microwave heating occurs as a result of both ohmic and magnetic losses induced by eddy currents, which defines a volumetric microwave induction heating process. Nanocrystallization is completed within 5 s, while full crystallization is achieved in less than 10 s.

https://doi.org/10.1016/j.scriptamat.2008.09.019