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On the Relationship Between Grain Boundary Sliding and Intragranular Slip During Superplastic Deformation

Published online by Cambridge University Press:  10 February 2011

A. D. Sheikh-Ali ,
J. A. Szpunar  and
H. Garmestani
A. D. Sheikh-Ali
Affiliation:
Laboratory for Micromechanics of Materials, National High Magnetic Field Laboratory, 1800 E. Paul Dirac Drive, Tallahassee, Florida 32310, USA Department of Metallurgical Engineering, McGill University, 3610 University Street, Montreal, PQ, Canada, H3A 2B2
J. A. Szpunar
Affiliation:
Department of Metallurgical Engineering, McGill University, 3610 University Street, Montreal, PQ, Canada, H3A 2B2
H. Garmestani
Affiliation:
Laboratory for Micromechanics of Materials, National High Magnetic Field Laboratory, 1800 E. Paul Dirac Drive, Tallahassee, Florida 32310, USA
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Abstract

This paper examines grain boundary sliding under the conditions of plastic strain incompatibility that is the most frequent case in polycrystalline materials. Two components of grain boundary sliding: dependent and independent on intragranular slip are distinguished. Theoretical estimate of a ratio between slip induced sliding and intragranular slip is obtained. It is concluded that slip and sliding are rather independent than interrelated processes.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 601: Symposium HH – Superplasticity-Current Status & Future Potential , 1999 , 193
Copyright
Copyright © Materials Research Society 2000

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