Self-consistent scale transition with imperfect interfaces: Application to nanocrystalline materials
A hierarchal scale transition technique is introduced to model the effect of imperfect interfaces on the elastoviscoplastic response of composite materials. This novel framework is based on a two-step procedure. In the first step, an inclusion is embedded in a matrix phase and the interface between the two phases is imperfect. The embedded inclusion is homogenized via the use of a Mori–Tanaka scheme. In a second step the homogenized inclusion is introduced in a matrix phase representing the homogeneous equivalent material, and the macroscopic response of the material is obtained via the self-consistent approximation. The model is applied to the case of pure nanocrystalline copper and allows the activity of grain boundary sliding to be quantified.
L. CapolungoaEmail:laurentc@lanl.gov?S. Benkassemc?M. Cherkaouia?J. Qua
[a]UMI 2958 GT-CNRS, Metz 57000, France;[b]George W. Woodruff School of Mechanical Engineering, Atlanta, GA 30332-0405, USA;[c]LPMM-CNRS Université Paul Verlaine, Ile du Saulcy, 57045 Metz Cedex 1, France
