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X-Ray Photon Correlation Spectroscopy Reveals Intermittent Aging Dynamics in a Metallic Glass

Autor
Evenson, Z.; Ruta, B.; Hechler , S.; Stolpe, M.; Pineda, E.; Gallino, I.; Busch, R.
Tipus d'activitat
Article en revista
Revista
Physical review letters
Data de publicació
2015-10-21
Volum
115
Número
17
DOI
https://doi.org/10.1103/PhysRevLett.115.175701 Obrir en finestra nova
Projecte finançador
Vidrios Orgánicos y Metálicos: Estructura, Dinámica y Estabilidad
Vidrios orgánicos y metálicos: Estructura, dinámica y estabilidad
Repositori
http://hdl.handle.net/2117/86242 Obrir en finestra nova
Resum
We use coherent x rays to probe the aging dynamics of a metallic glass directly on the atomic level. Contrary to the common assumption of a steady slowing down of the dynamics usually observed in macroscopic studies, we show that the structural relaxation processes underlying aging in this metallic glass are intermittent and highly heterogeneous at the atomic scale. Moreover, physical aging is triggered by cooperative atomic rearrangements, driven by the relaxation of internal stresses. The rich...
Citació
Evenson, Z., Ruta, B., Hechler , S., Stolpe, M., Pineda, E., Gallino, I., Busch, R. X-Ray Photon Correlation Spectroscopy Reveals Intermittent Aging Dynamics in a Metallic Glass. "Physical review letters", 21 Octubre 2015, vol. 115, núm. 17.
Paraules clau
AMORPHOUS MATERIALS, ENTHALPY RELAXATION, FLOW, FORMING LIQUID, PD43NI10CU27P20, SCATTERING, TRANSITION, VOLUME
Grup de recerca
GCM - Grup de Caracterització de Materials

Participants

  • Evenson, Zach  (autor)
  • Ruta, Beatrice  (autor)
  • Hechler, Simon  (autor)
  • Stolpe, Moritz  (autor)
  • Pineda Soler, Eloy  (autor)
  • Gallino, Isabella  (autor)
  • Busch, Ralf  (autor)

Arxius