Titel
Can Severe Plastic Deformation Tune Nanocrystallization in Fe-Based Metallic Glasses?
Autor*in
Florian Spieckermann
Department of Materials Science, Chair of Materials Physics, Montanuniversität Leoben
Niklas Plutta
Department of Materials Science, Chair of Materials Physics, Montanuniversität Leoben
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Abstract
The effects of severe plastic deformation (SPD) by means of high-pressure torsion (HPT) on the structural properties of the two iron-based metallic glasses Fe73.9Cu1Nb3Si15.5B6.6 and Fe81.2Co4Si0.5B9.5P4Cu0.8 have been investigated and compared. While for Fe73.9Cu1Nb3Si15.5B6.6, HPT processing allows us to extend the known consolidation and deformation ranges, HPT processing of Fe81.2Co4Si0.5B9.5P4Cu0.8 for the first time ever achieves consolidation and deformation with a minimum number of cracks. Using numerous analyses such as X-ray diffraction, dynamic mechanical analyses, and differential scanning calorimetry, as well as optical and transmission electron microscopy, clearly reveals that Fe81.2Co4Si0.5B9.5P4Cu0.8 exhibits HPT-induced crystallization phenomena, while Fe73.9Cu1Nb3Si15.5B6.6 does not crystallize even at the highest HPT-deformation degrees applied. The reasons for these findings are discussed in terms of differences in the deformation energies expended, and the number and composition of the individual crystalline phases formed. The results appear promising for obtaining improved magnetic properties of glassy alloys without additional thermal treatment.
Stichwort
severe plastic deformationamorphous alloysnanocrystallization
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
Erschienen in
Titel
Materials
Band
16
Ausgabe
3
ISSN
1996-1944
Erscheinungsdatum
2023
Publication
MDPI AG
Projekt
Kod / Identifikator
340025
Fördergeber
Projekt
Kod / Identifikator
IF 2019–37
Erscheinungsdatum
2023
Zugänglichkeit
Rechte
Rechteangabe
© 2023 by the authors
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