Article ID Journal Published Year Pages File Type
1498558 Scripta Materialia 2014 4 Pages PDF
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.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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