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The Critical Stress for Transmission of a Dislocation Across an Interface: Results From Peierls and Embedded Atom Models

Published online by Cambridge University Press:  10 February 2011

P. M. Anderson ,
S. Rao ,
Y. Cheng  and
P. M. Hazzledine
P. M. Anderson
Affiliation:
Dept. MSE, The Ohio State University, 2041 College Rd., Columbus, OH 43210–1179, anderson.1@osu.edu
S. Rao
Affiliation:
Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, UES, Inc., 4401 Dayton-Xenia Rd., Dayton, OH 45432.
Y. Cheng
Affiliation:
Dept. MSE, The Ohio State University, 2041 College Rd., Columbus, OH 43210–1179
P. M. Hazzledine
Affiliation:
Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, OH 45433, UES, Inc., 4401 Dayton-Xenia Rd., Dayton, OH 45432.
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Abstract

A continuum Peierls model of a screw dislocation being pushed through an interface and an atomistic EAM study of dislocation transmission across a [0 0 1] Al-Ni interface suggest that core spreading into the interface and misfit dislocations in the interface are both potent effects that can significantly increase barrier strength of interfaces.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 586: Symposium M – Interfacial Engineering for Optimized Properties II , 1999 , 267
Copyright
Copyright © Materials Research Society 2000

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References

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