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Journal Articles Scripta Materialia Year : 2014

Size-dependent failure mechanisms in ZrNi thin metallic glass films

Abstract

The fracture toughness of submicron Zr65Ni35 sputter-deposited films is thickness dependent. The failure mechanism involves corrugations for the thickest films and a transition-at 500 nm thickness-to a perfectly flat fracture surface. Both mechanisms are brittle-type, even though the elastic and plastic properties are independent of thickness and similar to the expected ductile bulk response. Finite-element simulations unravel the origin of the size effect and the transition of failure mode from the constraint on plastic dissipation.
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hal-01120073 , version 1 (24-02-2015)

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Matteo Ghidelli, Sébastien Gravier, Jean-Jacques Blandin, Jean-Pierre Raskin, Frédéric Lani, et al.. Size-dependent failure mechanisms in ZrNi thin metallic glass films. Scripta Materialia, 2014, 89, pp.9-12. ⟨10.1016/j.scriptamat.2014.06.011⟩. ⟨hal-01120073⟩
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