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Molecular Dynamics Modeling of the Mechanical Behavior of Metallic Multilayers

Published online by Cambridge University Press:  15 February 2011

James Belak  and
David B. Boercker
James Belak
Affiliation:
Lawrence Livermore National Laboratory, Livermore, CA 94550
David B. Boercker
Affiliation:
Lawrence Livermore National Laboratory, Livermore, CA 94550
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Abstract

Constant-stress molecular dynamics simulations are used to study the mechanical properties of equal concentration Cu-Ni (111) metallic multilayers of repeat lengths 0.4–5.0 nm. Uniaxial stress is applied along the close-packed [110] and perpendicular to the close-packed [112] directions within the (111) plane. The observed elastic modulus does not display a super-modulus effect as observed in experimental bulge tests for the biaxial modulus. However, both the average interlayer spacing and the out-of-plane Poisson ratio display anomalous effects for multilayer repeat lengths below about two nanometers.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 308: Symposium M1 – Thin Films: Stresses and Mechanical Properties IV , 1993 , 743
Copyright
Copyright © Materials Research Society 1993

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References

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