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Nanoscale Structure and High Velocity Sliding at Cu/Ag Interfaces

Published online by Cambridge University Press:  15 March 2011

James E. Hammerberg,
Timothy C. Germann,
Brad Lee Holian and
Ramon Ravelo
James E. Hammerberg
Affiliation:
Applied Physics Division, Los Alamos National Laboratory, Los Alamos, NM 87545
Timothy C. Germann
Affiliation:
Applied Physics Division, Los Alamos National Laboratory, Los Alamos, NM 87545
Brad Lee Holian
Affiliation:
Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545
Ramon Ravelo
Affiliation:
Department of Physics and Materials Research Institute, University of Texas-El Paso, El Paso, TX 79968-0515
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Abstract

We present the results of large-scale NonEquilibrium Molecular Dynamics (NEMD) simulations for Cu/Ag interfaces sliding in the velocity regime 0≤v≤1Km/sec. System sizes of 2.8 × 106 atoms are considered using Embedded Atom Method (EAM) potentials. Single crystals with 010 interfaces sliding along the <100> direction are considered. We discuss the observed velocity weakening in the tangential force at high velocities, and its connection with the observed dislocation structure and nanostructure that are nucleated during dry sliding.

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