Ductility of an ultrastrong glass-crystal nano-dual-phase alloy in sub-micron

Ge Wu, Jiayong Zhang, Chang Liu*, Qing Wang, Jian Lu*

*Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

17 Citations (Scopus)

Abstract

We report an excellent tensile property of the Mg-based nano-dual-phase glass-crystal alloy in sub-micro size. It shows room temperature large ductility (>50% true strain, resulted from the localized necking deformation) with ultrahigh tensile strength (2.4 GPa), compared with 1.4 GPa strength and limited ductility of its metallic glass counterpart. To unraveling the underlying reasons, we have made transmission electron microscope (TEM) in-situ tensile investigation and molecular dynamic (MD) simulation for the materials, showing that homogenous plastic flow of nano-sized metallic glass phase activated by strain non-localization mechanism is responsible for the large ductility.
Original languageEnglish
Pages (from-to)17-21
JournalScripta Materialia
Volume183
Online published18 Mar 2020
DOIs
Publication statusPublished - 1 Jul 2020

Research Keywords

  • Ductility
  • Metallic glass
  • Nanocomposite
  • Nanostructure
  • Sputtering

RGC Funding Information

  • RGC-funded

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