Elastic properties and atomic bonding character in metallic glasses - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Journal of Applied Physics Année : 2015

Elastic properties and atomic bonding character in metallic glasses

Tanguy Rouxel

Résumé

The elastic properties of glasses from different metallic systems were studied in the light of the atomic packing density and bonding character. We found that the electronegativity mismatch (Δe−) between the host- and the major solute-elements provides a plausible explanation to the large variation observed for Poisson's ratio (ν) among metallic glasses (MGs) (from 0.28 for Fe-based to 0.43 for Pd-based MGs), notwithstanding a similar atomic packing efficiency (Cg). Besides, it is found that ductile MGs correspond to Δe− smaller than 0.5 and to a relatively steep atomic potential well. Ductility is, thus, favored in MGs exhibiting a weak bond directionality on average and opposing a strong resistance to volume change.
Fichier principal
Vignette du fichier
Elastic properties and atomic bonding Manuscript for JAP 0615-v2.pdf (849.45 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01385067 , version 1 (20-10-2016)

Identifiants

Citer

Tanguy Rouxel, Y. Yokoyama. Elastic properties and atomic bonding character in metallic glasses. Journal of Applied Physics, 2015, 118 (4), pp.44901 - 44901. ⟨10.1063/1.4926882⟩. ⟨hal-01385067⟩
94 Consultations
431 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More