Gamma relaxation in bulk metallic glasses

S. Küchemann, R. Maaß

Research output: Contribution to journalArticlepeer-review


Studying the primary α- and secondary β-relaxation process has contributed significantly to the understanding of the structure and rheology of metallic glasses. In this letter, we report on a third relaxation mechanism indicated by a maximum in the loss modulus at low temperatures, which we term γ-relaxation. Contrary to the α- and β-relaxation mechanisms, this irreversible, low energy excitation causes a macroscopic rejuvenation, which we assign to non-affine atomic rearrangements in the matrix that are driven by thermal stresses during cooling. Observed in three different glassy alloys, the low temperature relaxation is identified as a general process in metallic glasses.

Original languageEnglish (US)
Pages (from-to)5-8
Number of pages4
JournalScripta Materialia
StatePublished - Aug 1 2017


  • Mechanical spectroscopy
  • Metallic glasses
  • Rejuvenation
  • Relaxation

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys


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