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Dislocation Nucleation and Dynamics at Sliding Interfaces

Published online by Cambridge University Press:  10 February 2011

R. P. Mikulla ,
J. E. Hiammerberg ,
P. S. Lomdahl  and
B. L. Holian
R. P. Mikulla
Affiliation:
Applied Theoretical and Computational Physics Division, Los Alamos National Laboratory. Los Alamos, NM, 87544
J. E. Hiammerberg
Affiliation:
Applied Theoretical and Computational Physics Division, Los Alamos National Laboratory. Los Alamos, NM, 87544
P. S. Lomdahl
Affiliation:
Theoretical Division. Los Alamos National Laboratory, Los Alamos, NM. 87544
B. L. Holian
Affiliation:
Theoretical Division. Los Alamos National Laboratory, Los Alamos, NM. 87544
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Abstract

Using large-scale molecular-dynamics simulations in two dimensions, we have observed interesting dislocation generation and dynamics at the interface between two smooth metallic surfaces. sliding relative to one another. The early-time behavior is related to later-time nanocrystalline structure at the interface whose formation is related to velocity-weakening in the coefficient of friction. We discuss the differences between frictional dislocation behavior in two and three dimensions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 522: Symposium T – Fundamentals of Nanoindentation & Nanotribology , 1998 , 385
Copyright
Copyright © Materials Research Society 1998

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References

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