Structural investigation and mechanical properties of a representative of a new class of materials: Nanograined metallic glasses

N. Chen, D. V. Louzguine-Luzgin, G. Q. Xie, P. Sharma, J. H. Perepezko, M. Esashi, A. R. Yavari, A. Inoue

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

A new class of materials: Au-based nanograined metallic glasses (NGMGs) were synthesized using magnetron sputtering with powder targets. A detailed study by x-ray diffraction and high-resolution transmission electron microscopy (TEM) documents the unique nanoscale granular structure of the Au-based NGMG. This material inherited the good mechanical properties of metallic glasses, showing a high hardness of ∼5.3 GPa and a low elastic modulus of ∼79 GPa. In addition, in contrast to most MGs the nanoglassy particles can deform along the loading direction, exhibiting unique tensile elongation up to 100%. During thermal crystallization of NGMG material, even smaller sized Au solid solution nanocrystals are formed within the glassy nanograins, offering a new way for production of the nanocomposites with tailored structural length scales.

Original languageEnglish
Article number045610
JournalNanotechnology
Volume24
Issue number4
DOIs
Publication statusPublished - 2013 Feb 1

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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