Loading...
Loading...

Go to the content (press return)

Relaxation of rapidly quenched metallic glasses: Effect of the relaxation state on the slow low temperature dynamics

Author
Pineda, E.; Bruna, P.; Ruta, B.; Gonzalez Silveira, Marta; Crespo, D.
Type of activity
Journal article
Journal
Acta materialia
Date of publication
2013-05
Volume
61
Number
8
First page
3002
Last page
3011
DOI
https://doi.org/10.1016/j.actamat.2013.01.060 Open in new window
Project funding
Grup de Física i Enginyeria de Materials
Producción de vidrios metálicos masivos. Estudio de la estructura local y estabilidad para la mejora de propiedades mecánicas 2
TRANSICIONS DE FASES, POLIMORFISME I DINÀMICA DE LA METAESTABILITAT
Abstract
The relaxation spectrum of rapidly quenched Mg65Cu25Y10 metallic glass ribbons is studied by mechanical spectroscopy at temperatures below and around the glass transition. The comparison between hyper-quenched and relaxed samples is used to examine the origin of the low temperature “excess wing” of internal friction commonly observed in mechanical spectroscopy of metallic glasses. The results show that the excess wing can be attributed to access of the system to the broad a-relaxation proces...
Keywords
Dynamic mechanical analysis, Internal friction, Mechanical properties, Metallic glasses, Relaxation
Group of research
GCM - Group of Characterization of Materials

Participants