Three-point bending fracture characteristics of bulk metallic glasses

Fan Zhenjun, Zheng Zhiyuan, Zengbao Jiao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)

Abstract

This paper presents the SEM micrographs for the three-point bending fracture surfaces of Zr-based, Ce-based and Mg-based bulk metallic glasses (BMGs), which show the dimple structures in the three kinds of BMGs. The shapes of the giant plastic deformation domain on the fracture surface are similar but the sizes are different. The fracture toughness KCand the dimple structure size of the Zr-based BMG are both the largest, and those of the Mg-based BMG are the smallest. The fracture toughness KCand the dimple structure size of the Ce-based BMG are between those of the Zr-based and the Mg-based BMG. Through analyzing the data of different fracture toughnesses of the BMGs, we find that the plastic zone width follows w = (KC/σY)2/(6π).
Original languageEnglish
Pages (from-to)654-657
Number of pages4
JournalScience China: Physics, Mechanics and Astronomy
Volume53
Issue number4
DOIs
Publication statusPublished - 1 Apr 2010
Externally publishedYes

Keywords

  • Fracture surface
  • Metallic glass
  • Tree-point bending

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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