Session J24: Focus Session: Multiscale Modeling: Structural Materials
11:15 AM–2:15 PM, Tuesday, March 22, 2011
Room: D167
Sponsoring Units:
DCOMP DMP
Chair: Zhiqiang Wang, University of North Texas
Abstract ID: BAPS.2011.MAR.J24.6
Abstract: J24.00006 : Models of defects at bi-material interfaces
1:03 PM–1:15 PM
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Abstract 
Authors:
Kipton Barros
(Los Alamos National Laboratory)
Turab Lookman
(Los Alamos National Laboratory)
Multi-phase composite materials with a high density of bi-material interfaces can exhibit striking strength and robustness in extreme conditions such as shock and radiation damage. Laminar composites of Ag-Cu, Cu-Nb, and Ag-Fe with submicron to nano-scale layer thicknesses have recently been fabricated, but theoretical models of such systems are lacking. The plastic deformation behavior of nano-scale composites is dominated by defects, such as dislocations and twins, that are controlled by the interfaces. We investigate the phenomenology of defect dynamics at bi-material interfaces using Landau theory based models that span atomic and mesoscales.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.MAR.J24.6