Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.actamat.2005.10.038
Title: Fracture in confined thin films: A discrete dislocation study
Authors: Chng, A.C.
O'Day, M.P.
Curtin, W.A.
Tay, A.A.O. 
Lim, K.M. 
Keywords: Computer simulation
Dislocations
Mechanical properties - fracture
Plastic
Thin films
Issue Date: Feb-2006
Citation: Chng, A.C., O'Day, M.P., Curtin, W.A., Tay, A.A.O., Lim, K.M. (2006-02). Fracture in confined thin films: A discrete dislocation study. Acta Materialia 54 (4) : 1017-1027. ScholarBank@NUS Repository. https://doi.org/10.1016/j.actamat.2005.10.038
Abstract: The fracture toughness of thin metal films confined between elastic layers is studied using a two-dimensional discrete dislocation (DD) method. Fracture along the metal/substrate interface is permitted through the use of a cohesive zone model. The predicted fracture toughness versus film thickness is in good agreement with experimental data for the Cu/TaN/SiO2/Si system. The predicted 0.2%-offset yield stress also agrees with values derived by fitting a continuum plasticity model to the experimental fracture data. The effects of intrinsic interface fracture energy, mode mixity of the loading, and fracture away from the metal/substrate interface are investigated to capture effects present in the experiments. Overall, the results show that the contribution of plastic dissipation to interfacial fracture toughness may be qualitatively predicted using the DD framework and that the DD framework can rationalize experimentally observed size effects under different loading conditions with no ad hoc assumption of the constitutive behavior. © 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Source Title: Acta Materialia
URI: http://scholarbank.nus.edu.sg/handle/10635/85227
ISSN: 13596454
DOI: 10.1016/j.actamat.2005.10.038
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

20
checked on Sep 19, 2018

WEB OF SCIENCETM
Citations

20
checked on Sep 10, 2018

Page view(s)

34
checked on Aug 3, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.