Plasticity improvement of ZrCu-based bulk metallic glass by ex situ dispersed Ta particles

J. B. Li, J. S.C. Jang, S. R. Jian, K. W. Chen, J. F. Lin, J. C. Huang

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

The (Zr48Cu36Al8Ag8)99.25Si0.75-based bulk metallic glass composite (BMGC) rods ex situ dispersed with Ta particles (with a diameter of 2-4mm) have been successfully fabricated by suction casting and characterized. These Ta-added BMGCs exhibit similar thermal properties in comparison with its base alloy counterpart, with relatively high glass forming ability (GFA). The results of compression test show that a superior mechanical performance with up to 22% compressive plastic strain, 1800MPa yield strength and 1850MPa fracture strength at room temperature can be obtained for the 2mm diameter rod of the ZrCu-based BMGC with 10vol.% Ta particles. These ex situ dispersed Ta particles (20±8μm) would arrange as semi-uniform confinement zones to restrict the shear band propagation. In addition, for a given Ta particle size, higher volume fraction particles would lead to more interfacial areas, shorter inter-particle spacings, smaller confinement zone sizes than the smaller volume fraction particles, and results in presenting larger compression plasticity.

Original languageEnglish
Pages (from-to)8244-8248
Number of pages5
JournalMaterials Science and Engineering A
Volume528
Issue number28
DOIs
Publication statusPublished - 2011 Oct 25

All Science Journal Classification (ASJC) codes

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

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