A sequential pre-cracking procedure to measure the mode-I fracture toughness of ultra pure bulk metallic glasses. (December 2017)

• Record Type: Journal Article
• Authors: Bernard, C.; Keryvin, V.; Doquet, V.; Hin, S.; Yokoyama, Y.
• Is Part Of: Scripta materialia. Number 141(2017)
• Page Start: 58
• Page End: 61
• Publication Date: 2017-12
• Subjects: Fracture -- Toughness -- Bulk metallic glasses -- Protocol; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2017.07.027
• Languages: English
• ISSNs: 1359-6462

Abstract

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 Zr55 Cu30 Al10 Ni5 (at.%) amorphous alloy, and allowed successful pre-cracking and reliable measurement of the apparent mode I fracture toughness. Graphical Abstract: