Various Rejuvenation Behaviors of Zr-Based Metallic Glass by Cryogenic Cycling Treatment with Different Casting Temperatures

Wei Guo, Rui Yamada, Junji Saida, Shulin Lü, Shusen Wu

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The rejuvenation behavior of an Zr 50 Cu 40 Al 10 (at.%) metallic glass upon cryogenic cycling treatment has been investigated. At a high casting temperature, the microstructure of the glass is quite homogenous and thus, internal stress cannot be generated during cycling. Therefore, the glass cannot be rejuvenated by cryogenic cycling treatment. In the contrary, by lowering the casting temperature, nano-sized heterogeneity can be induced and subsequently generates the internal stress and rejuvenates the glass. Once the glass is rejuvenated, the more induced free volume can plasticize the glass with a higher plastic strain. These findings point out that the synthesis conditions can tailor the heterogeneity of the glass and subsequently affect the following rejuvenation behavior upon thermal treatment. It can also help understand the mechanisms of rejuvenation of metallic glass upon cryogenic cycling treatment.

Original languageEnglish
Article number398
JournalNanoscale Research Letters
Volume13
DOIs
Publication statusPublished - 2018

Keywords

  • Casting temperature
  • Cryogenic cycling
  • Heterogeneity
  • Metallic glass
  • Rejuvenation

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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