Deformation behavior of a Zr-based bulk metallic glass under a complex stress state

S. H. Chen, Kang Cheung Chan, L. Xia

Research output: Journal article publicationJournal articleAcademic researchpeer-review

25 Citations (Scopus)

Abstract

In this work, the deformation behavior of a Zr-based bulk metallic glass specimen under a tailored complex stress state was investigated. When the specially designed specimen was subjected to a uniaxial tensile loading, the in-plane stress distribution along the symmetrical plane was hyperbolic, with the presence of both compressive and tensile stresses. The evolution of deformation in the specimen was found to consist of three stages: the shear band initiation stage (stage I), the shear band multiplication stage (stage II) and the final rapid fracture stage (stage III). In a conventional tensile specimen with uniformly distributed stresses, the specimen fractures (stage III) catastrophically after stage I. However, in the specially designed specimen, the complex stress distributions result in not only more stable shearing processes in stage I, but also the evolution of stage II before stage III, which causes the formation of a large number of shear bands. The findings shed more light on the deformation mechanisms of bulk metallic glasses under complex stress states.
Original languageEnglish
Pages (from-to)38-44
Number of pages7
JournalIntermetallics
Volume43
DOIs
Publication statusPublished - 12 Aug 2013

Keywords

  • B. Brittleness and ductility
  • B. Glasses metallic
  • B. Mechanical properties at ambient temperature
  • B. Surface properties
  • F. Electron microscopy scanning

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys
  • Chemistry(all)

Cite this