High specific strength and improved ductility of bulk (Mg 0.65Cu0.25Gd0.1)100-xTix metallic glass composites

Fushan Li, Shaokang Guan, Baolong Shen, Akihiro Makino, Akihisa Inoue

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The monolithic Mg65Cu25Gd10 bulk metallic glass always shows brittle fracture with a plastic strain of near zero even under a compressive load. Improved ductility and enhanced compressive strength were simultaneously achieved at room temperature in (Mg0.65Cu 0.25Gd0.1)100-xTix (x = 0, 2.5, 5 and 7.5 at%) metallic glass composites. The compressive strength (σf ) reached 940 MPa, and a plastic strain (εp) of about 0.8% was undergone for the bulk metallic glass composite at x = 5. The glass composites were formed by doping Mg 65Cu25Gd10 bulk metallic glass with adequate lightweight titanium with a density near that of Mg65Cu25 Gd10bulk metallic glass. The composite sustains the features of lightweight and very high specific strength which are the same as those of the Mg-based bulk metallic glass. Thus, the addition of Ti does not cause distinctly harmful influence on the glass-formation ability of the matrix glass.

Original languageEnglish
Pages (from-to)3193-3196
Number of pages4
JournalMaterials Transactions
Volume48
Issue number12
DOIs
Publication statusPublished - 2007 Dec 1

Keywords

  • Bulk metallic glass
  • Composites
  • Magnesium
  • Mechanical properties

ASJC Scopus subject areas

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

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