J. Mater. Sci. Technol. ›› 2021, Vol. 81: 123-130.DOI: 10.1016/j.jmst.2020.08.029

• Research Article • Previous Articles     Next Articles

Structural homology of the strength for metallic glasses

Weiming Yanga, Xinfa Suna, Haishun Liua,*(), Changfeng Yub, Wenyu Lia, Akihisa Inouea,c, Daniel Şopud, Jürgen Eckertd,e, Chunguang Tangf,*()   

  1. aSchool of Mechanics and Civil Engineering, State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China
    bDepartments of Physics, College of Science, Xi’an Polytechnic University, Xi’an 710048 China
    cInternational Institute of Green Materials, Josai International University, Togane, 283-8555, Japan
    dErich Schmid Institute of Materials Science, Austrian Academy of Science, 8700 Leoben, Austria
    eDepartment of Materials Science, Chair of Materials Physics, Montanuniversität Leoben, 8700 Leoben, Austria
    fResearch School of Chemistry, Energy Change Institute, Australian National University, Canberra ACT 2601, Australia
  • Received:2020-06-01 Revised:2020-06-18 Accepted:2020-06-21 Published:2020-08-08 Online:2020-08-08
  • Contact: Haishun Liu,Chunguang Tang
  • About author:chunguang.tang@anu.edu.au(C. Tang).
    *E-mail addresses: liuhaishun@126.com (H. Liu),

Abstract:

The structure-property relationship, one of the central themes in materials science, is far from being well understood for metallic glasses (MGs) due to the great complexity of their amorphous structures. Based on the analysis of published experimental data for 165 MGs from more than 15 different alloy systems, the present study reveals a universal dependence of mechanical properties (Young’s moduli, shear moduli and yield strength) on simple structural parameters (the inter-atomic distance and/or valence electron density) originating from the interatomic potential and Fermi sphere-Brillouin zone interaction. This work establishes a structure-property relationship for metallic glasses and provides insights into the fundamentals of the mechanical properties of disordered systems.

Key words: Metallic glasses, Structure-property relationship, Mechanical properties, Inter-atomic distance, Valence electron density