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Journal of Materials Science

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01-06-2011 | IIB 2010

Direct observation and quantification of grain boundary shear-migration coupling in polycrystalline Al

Authors: F. Mompiou, M. Legros, D. Caillard

Published in: Journal of Materials Science | Issue 12/2011

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Abstract

Rapid grain boundary motion under stress has been observed during in-situ TEM straining experiment in polycrystalline Al at moderate temperatures. Crystallographic orientation of both sides of moving grain boundaries (GBs) was simultaneously recorded. A shear produced by the grain boundary migration has been estimated using fiducial markers and image correlation yielding a coupling factor (i.e., ratio of the shear strain over the migration distance) of around 7%. This result is compared to existing models based on shear coupled migration theories, and is discussed within the new Shear Migration Geometrical model (SMIG).

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Title: Direct observation and quantification of grain boundary shear-migration coupling in polycrystalline Al
Authors: F. Mompiou
M. Legros
D. Caillard
Publication date: 01-06-2011
Publisher: Springer US
Published in: Journal of Materials Science / Issue 12/2011
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-011-5369-z

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