Elastic modulus change and its relation with glass-forming ability and plasticity in bulk metallic glasses

Ming Yang, Xiongjun Liu, Yuan Wu, Hui Wang, Jianbiao Wang, Haihui Ruan, Zhaoping Lu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)

Abstract

In this work, we revealed the intrinsic relation between the modulus change upon heating and macroscopic properties such as glass-forming ability (GFA) and room-temperature plasticity in various metallic glasses. Specifically, GFA and plasticity can respectively be related to the softening rate right above the glass transition temperature (Tg) and the degree of sub-Tg relaxation. These relations can be understood in terms of the unified picture of potential energy barrier crossing. Above Tg, the faster barrier crossing leads to the larger softening rate and the higher tendency of crystallization; below Tg, the easier local rearrangement brings about the larger plasticity.

Original languageEnglish
Pages (from-to)62-65
Number of pages4
JournalScripta Materialia
Volume161
DOIs
Publication statusPublished - 1 Mar 2019

Keywords

  • Atomic relaxation
  • Metallic glasses
  • Modulus change
  • Room-temperature plasticity
  • Softening rate

ASJC Scopus subject areas

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

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