A Cu-Y-Al glassy alloy with strong beta relaxation and low activation energies for structural relaxation and crystallization

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Abstract

Structural relaxation, beta relaxation and crystallization processes of the Cu53Y42Al5 metallic glass were studied in the present work. X-ray diffractometry was used to study the structure of the samples. Phase transformations were studied by differential scanning calorimetry by using a power compensated type differential calorimeter. Cu-mould casting resulted in the formation of crystalline samples while fully glassy Cu53Y42Al5 alloy samples were produced by melt spinning at a high cooling rate of about 105-106 K/s. This glassy alloy is characterized by strong beta relaxation and low activation energy values for crystallization and relaxation in comparison with other metallic glasses studied earlier.

Original languageEnglish
Article number178762
JournalThermochimica Acta
Volume693
DOIs
Publication statusPublished - 2020 Nov

Keywords

  • Activation energy
  • Differential scanning calorimetry
  • Enthalpy
  • Glass-formation
  • Structural relaxation

ASJC Scopus subject areas

  • Instrumentation
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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