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Crystallization of Fe75Zr25 metallic glass: a two‐step process involving metastable bcc‐Fe and polymorphic transformation |
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| Authors: | Pedro Gorria Joseba S. Garitaonandia María J. Pérez Jesús A. Blanco Javier Campo |
| Affiliation: | 1. Departamento de Física, Universidad de Oviedo, Calvo Sotelo, s/n, 33007 Oviedo, Spain;2. Departamento de Física Aplicada II, UPV/EHU, 48080 Bilbao, Spain;3. Instituto de Ciencia de Materiales de Aragón, CSIC–Universidad de Zaragoza, 50009 Zaragoza, Spain;4. Institut Laue‐Langevin, BP 156, 6 rue Jules Horowitz, 38042 Grenoble cedex, France |
| Abstract: | The crystallization process of mechanically alloyed Fe75Zr25 metallic glasses is investigated by means of both thermo‐magnetization and in situ neutron powder thermo‐diffraction experiments in the temperature range 300–1073 K. It was found that the crystallization takes place in a two‐step process, involving firstly the appearance of metastable Fe and Fe2Zr crystalline phases between 880 K and 980 K, and a subsequent polymorphic transformation into Fe3Zr above 980 K. These findings explain the anomalous magnetization vs. temperature behaviour on heating–cooling cycles.  |
| Keywords: | 61.05.fm 64.70.pe 75.50.Bb 81.20.Ev 81.30.Hd |