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Inelastic Behavior and Grain-Boundary Effects in Polycrystalline Materials

Published online by Cambridge University Press:  26 February 2011

Jibin Shi ,
Mohammed Zikry  and
Tarek Moustafa Hatem
Jibin Shi
Affiliation:
jshi4@ncsu.edu, North Carolina State University, Mechanical and Aerospace Engineering, 2601 Stinson Dr, Campus Box 7910, Raleigh, NC, 27695, United States
Mohammed Zikry
Affiliation:
zikry@ncsu.edu, North Carolina State University, Mechanical and Aerospace Engineering, 2601 Stinson Dr, Campus Box 7910, Raleigh, NC, 27695, United States
Tarek Moustafa Hatem
Affiliation:
tmhatem@ncsu.edu, North Carolina State University, Mechanical and Aerospace Engineering, 2601 Stinson Dr, Campus Box 7910, Raleigh, NC, 27695, United States
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Abstract

Dislocation-density based multiple-slip constitutive formulations and specialized computational schemes are introduced to account for grain-boundary (GB) effects in polycrystalline aggregates. New kinematically based interfacial grain-boundary regions and formulations are introduced to account for dislocation-density transmission, absorption, and pile-ups that may occur due to CSL grain-boundary misorientations.

Keywords

grain boundariescrystallinesimulation
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 978: Symposium GG – Multiscale Modeling of Materials , 2006 , 0978-GG12-07-EE08-07
Copyright
Copyright © Materials Research Society 2007

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