Maximizing the degree of rejuvenation in metallic glasses

Xudong Yuan, Daniel Şopu, Florian Spieckermann, Kai Kai Song, Sergey V. Ketov, Konda Gokuldoss Prashanth, Jürgen Eckert

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1 Citation (Scopus)

Abstract

As the reverse process of relaxation, rejuvenation is the structural excitation process that can bring metallic glasses (MGs) to a higher energy state and usually increases their free volume. Here, using a dilution procedure conducted by randomly removing atoms from the modeled glass matrix, the degree of rejuvenation can be systematically controlled and the maximum rejuvenation threshold of MGs is identified. The structural relaxation is activated during the rejuvenation process and the dynamic balance between free volume creation and annihilation defines the rejuvenation ability of MGs. The highest degree of rejuvenation correlates to the flow strain of the materials and the structure is similar to that found in shear bands.
Original languageEnglish
Article number114575
Number of pages5
JournalScripta Materialia
Volume212.2022
Issue number15 April
Early online date3 Feb 2022
DOIs
Publication statusPublished - 15 Apr 2022

Bibliographical note

Publisher Copyright: © 2022 Acta Materialia Inc.

Keywords

  • Metallic glasses
  • Molecular dynamics simulations
  • Rejuvenation
  • Relaxation

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