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Direct observation of recrystallization mechanisms during annealing of Cu in low and high strain conditions
Journal article   Open access   Peer reviewed

Direct observation of recrystallization mechanisms during annealing of Cu in low and high strain conditions

A. Nye, A. C. Leff, Christopher M. Barr, M. L. Taheri and Jason E Cohn
Scripta materialia, v 146, pp 308-311
15 Mar 2018
url
https://doi.org/10.1016/j.scriptamat.2017.12.011View
Accepted (AM)Open Access (Publisher-Specific) Open

Abstract

Materials Science Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Nanoscience & Nanotechnology Science & Technology Science & Technology - Other Topics Technology
Recrystallization and subsequent twin formation in >99.99% pure copper is investigated by in situ annealing in a scanning electron microscope. Distinct microstructural evolution mechanisms are observed for specimens deformed using 5% and 25% cold-rolled reductions. Upon annealing the former, growth and twinning of existing grains via strain-induced boundary migration is observed while the latter exhibits nucleation and growth. Serial sectioning indicates that recrystallization in the low strain condition is surface dominant while nucleation occurs through thickness in the high strain condition. Geometrically necessary dislocation densities are calculated and mapped to identify the localized driving pressures for each recrystallization mechanism. (C) 2017 Published by Elsevier Ltd on behalf of Acta Materialia Inc.

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Collaboration types
Domestic collaboration
Web of Science research areas
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Nanoscience & Nanotechnology
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