High strength Ti-based bulk glassy alloys with distinct ductility

N. Nishiyama, C. L. Ma, H. Soejima, K. Amiya, A. Inoue

Research output: Contribution to journalArticle

Abstract

We tried to find a Ti-based glass-forming system with high glass-forming ability and distinct ductility. As a result, a new Ti-based BMG was found in the (Ti-Zr-Hf)-Cu-Ni-Si senary system. The critical diameter for glass-formation of the alloy lay between 5 and 6 mm. The fracture strength and strain under tensile stress were 2040 MPa and 0.021, respectively. The ductility nature of the alloy is attributed to the synergetic effects of the excess free volumes due to high GFA and the pinning sites to stop the localized shear slip due to the existence of nano-crystals. These high GFA, good mechanical properties and distinct ductility enable us to apply the senary alloy for some industrial uses.

Original languageEnglish
Pages (from-to)699-702
Number of pages4
JournalJournal of Metastable and Nanocrystalline Materials
Volume24-25
DOIs
Publication statusPublished - 2005 Dec 1

Keywords

  • Excess free volume
  • Glass-forming ability
  • Specific strength
  • Tensile strength

ASJC Scopus subject areas

  • Materials Science (miscellaneous)
  • Materials Science(all)
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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