Fatigue behavior of Zr-based bulk-metallic glasses

G. Y. Wang, P. K. Liaw, Y. Yokoyama, A. Inoue, C. T. Liu

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)

Abstract

The objective of this paper was to study the fatigue characteristics of zirconium (Zr)-based bulk-metallic glasses (BMGs) and to investigate the mechanisms of fatigue-crack initiation, crack propagation, and fracture in BMGs. The fatigue ratios (fatigue limit/tensile strength) (0.30-0.55) of Zr-based BMGs were found to be generally comparable with those of crystalline alloys, such as steel and titanium alloys. Fatigue cracks typically initiate from shear bands, inclusions, and/or porosities. The striations resulting from the blunting and resharpening of the fatigue-crack tip formed in the fatigue-crack-growth region. The fine striation spacing seems to be comparable to that of the crystalline alloys.

Original languageEnglish
Pages (from-to)314-323
Number of pages10
JournalMaterials Science and Engineering A
Volume494
Issue number1-2
DOIs
Publication statusPublished - 2008 Oct 25

Keywords

  • Casting
  • Fatigue
  • Metallic glasses
  • Scanning electron microscopy (SEM)
  • X-ray diffraction

ASJC Scopus subject areas

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

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