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

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

2 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)17-21
Journal / PublicationScripta Materialia
Volume183
Online published18 Mar 2020
Publication statusPublished - 1 Jul 2020

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.

Research Area(s)

  • Ductility, Metallic glass, Nanocomposite, Nanostructure, Sputtering