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Atomistic Studies of Generic Tilt Grain Boundary Structures

Published online by Cambridge University Press:  10 February 2011

D. N. Pawaskar ,
R. Miller ,
R. Bai ,
A. Schwartzman ,
R. Phillips  and
C. L. Briant
D. N. Pawaskar
Affiliation:
Division of Engineering, Brown University, Providence, RI 02912
R. Miller
Affiliation:
Department of Mechanical Engineering, University of Saskatchewan, Canada, S7N 5A9
R. Bai
Affiliation:
Division of Engineering, Brown University, Providence, RI 02912
A. Schwartzman
Affiliation:
Division of Engineering, Brown University, Providence, RI 02912
R. Phillips
Affiliation:
Division of Engineering, Brown University, Providence, RI 02912
C. L. Briant
Affiliation:
Division of Engineering, Brown University, Providence, RI 02912
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Abstract

We investigate the atomic-scale structures of high-sigma (∑) tilt grain boundaries in aluminum using lattice statics calculations. In particular, we examine the efficacy of the structural unit model (SUM) in the context of long-period boundaries. Our investigation of both the equilibrium and metastable structures for certain high ∑ boundaries may necessitate a revision of the SUM formalism. We also consider further departures from high symmetry boundaries by considering the structural rearrangements induced by steps on boundaries.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 538: Symposium J – Multiscale Modelling of Materials , 1998 , 383
Copyright
Copyright © Materials Research Society 1999

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