A sequential pre-cracking procedure to measure the mode-I fracture toughness of ultra pure bulk metallic glasses

C. Bernard, V. Keryvin, V. Doquet, S. Hin, Y. Yokoyama

Research output: Contribution to journalArticlepeer-review

Abstract

A dedicated fatigue pre-cracking method, performed successively under mode II and mode I, has been set up to initiate and propagate a crack close to the notch plane, which is particularly difficult to achieve using pure mode I loading on some ultra pure bulk metallic glasses, free from oxygen contamination. This method, was applied to a pure Zr55Cu30Al10Ni5 (at.%) amorphous alloy, and allowed successful pre-cracking and reliable measurement of the apparent mode I fracture toughness.

Original languageEnglish
Pages (from-to)58-61
Number of pages4
JournalScripta Materialia
Volume141
DOIs
Publication statusPublished - 1 Dec 2017
Externally publishedYes

Keywords

  • Bulk metallic glasses
  • Fracture
  • Protocol
  • Toughness

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