Titre :

Thermal stability, phase transformations and mechanical properties of a Fe64B24Y4Nb6 metallic glass

Auteur(s) :

Avettand-Fènoël, Marie-NoËlle [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
Marinova, Maya [Auteur]
Institut Michel Eugène Chevreul - FR 2638 [IMEC]
Institut Chevreul - FR2638
Taillard, Roland [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Jiang, Wei [Auteur]
University of Science and Technology of China [Hefei] [USTC]

Titre de la revue :

Journal of Alloys and Compounds

Nom court de la revue :

Journal of Alloys and Compounds

Numéro :

854

Pagination :

157068

Éditeur :

Elsevier BV

Date de publication :

2021-02

ISSN :

0925-8388

Discipline(s) HAL :

Chimie/Matériaux
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]

Résumé en anglais : [en]

Fe64B24Y4Nb6 metallic glass ribbon and its bulk counterpart were characterized by conventional and high rate differential scanning calorimetry, electron probe microanalysis, in-situ X-ray diffractometry, high resolution ...
Lire la suite >Fe64B24Y4Nb6 metallic glass ribbon and its bulk counterpart were characterized by conventional and high rate differential scanning calorimetry, electron probe microanalysis, in-situ X-ray diffractometry, high resolution transmission electron microscopy and instrumented microhardness. The metallic glass possesses a high glass forming ability. It is thermally stable up to 585 °C while primary crystallization of Fe2B and FeB occurs at 677 °C. Estimated by the Kissinger and Moynihan’s methods, the activation energy of glass transition was shown to be lower than that of primary crystallization. After total crystallization, the bulk alloy contains a terminal Fe solid solution, Fe2B, FeB, Fe3B8Nb7 and BFe14Y2 phases while the ribbon contains additional yttria as well. The loading and unloading curves as well as the indentation features are very suitable in order to evidence the effect of the various crystallization events on the mechanical behavior of the bulk alloy. The hardness of the amorphous and fully crystallized bulk alloys amount to 1198 ± 21 and 461 ± 65 HV0.5, respectively and their reduced Young modulus are close to 174 ± 5 GPa. The deformation ability of the fully crystallized alloy is twice that of the glassy alloy.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Non spécifiée

Établissement(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Métallurgie Physique et Génie des Matériaux

Date de dépôt :

2020-09-28T10:37:01Z
2020-10-08T13:18:49Z
2021-10-11T13:15:13Z