Strain induced fragility transition in metallic glass

Hai Bin Yu, Ranko Richert, Robert Maaß, Konrad Samwer

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Relaxation dynamics are the central topic in glassy physics. Recently, there is an emerging view that mechanical strain plays a similar role as temperature in altering the relaxation dynamics. Here, we report that mechanical strain in a model metallic glass modulates the relaxation dynamics in unexpected ways. We find that a large strain amplitude makes a fragile liquid become stronger, reduces dynamical heterogeneity at the glass transition and broadens the loss spectra asymmetrically, in addition to speeding up the relaxation dynamics. These findings demonstrate the distinctive roles of strain compared with temperature on the relaxation dynamics and indicate that dynamical heterogeneity inherently relates to the fragility of glass-forming materials.

Original languageEnglish (US)
Article number7179
JournalNature Communications
Volume6
DOIs
StatePublished - May 18 2015

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Metallic glass
metallic glasses
Glass
Temperature
Physics
glass
Glass transition
emerging
physics
temperature
Liquids
liquids

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Chemistry(all)
  • Physics and Astronomy(all)

Cite this

Strain induced fragility transition in metallic glass. / Yu, Hai Bin; Richert, Ranko; Maaß, Robert; Samwer, Konrad.

In: Nature Communications, Vol. 6, 7179, 18.05.2015.

Research output: Contribution to journalArticle

Yu, Hai Bin ; Richert, Ranko ; Maaß, Robert ; Samwer, Konrad. / Strain induced fragility transition in metallic glass. In: Nature Communications. 2015 ; Vol. 6.
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