Difficulties in 3D metal printing : The inner stress evolution due to nonequilibrium phase transformation.

Lovas, Antal and Szabó, Attila (2018) Difficulties in 3D metal printing : The inner stress evolution due to nonequilibrium phase transformation. DUNAKAVICS, 6 (8). pp. 29-36. ISSN 2064-5007

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Abstract

Although thin metal strips or amorphous ribbons offer a higher magnetic performance compared to the presently used thicker crystalline electrical steels in electric motors, they have been considered unsuitable to build the rotor and/or the stator of classical electric motors because of fabricating limitations. Nowadays the development of high efficiency electrical motors has an outstanding significance, so an attempt is made to apply the soft magnetic glassy tapes to build stator and rotor elements for this application. However Fe based amorphous ribbons are promissing base materials, but in order to use them, several additional requirements have to be satisfied, like cutting the soft magnetic elements into the appropriate shapes, avoiding the degradation (local crystallization) of the individual glassy elements. In this paper the heat affected zone of soft magnetic materials like FINEMET and METGLAS were examined after laser cutting. The investigations were focused on structural changes (XRD and DSC) and microhardness distribution of the heat affected zone which have a strong relation to mechanical properties for example embrittlement. These materials will be used in electric motors to increase its efficiency therefore it is important to us for later machinability and handling of laser cutted parts

Item Type:	Article
Uncontrolled Keywords:	soft magnetic materials, heat affected zone, laser cutting, glassy alloys, amorphous alloys, FINEMET, METGLAS
Divisions:	Műszaki Intézet
Depositing User:	Gergely Beregi
Date Deposited:	04 May 2021 14:05
Last Modified:	04 May 2021 14:05
URI:	http://publication.repo.uniduna.hu/id/eprint/668
MTMT:	30333162

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