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Microstructure evolution during annealing of an SPD- processed supersaturated Cu-3 at.% Ag alloy
Published in Institute of Physics Publishing
2014
Volume: 63
   
Issue: 1
Abstract
Supersaturated Cu-3 at.% Ag alloy was processed by rolling at liquid nitrogen temperature and subsequent annealing at 623 K up to 20 min. It was found that after annealing, an inhomogeneous solute atom distribution developed, since the Ag particles with small size and/or large specific interfacial energy were dissolved due to the Gibbs-Thomson effect. In the region where the solute concentration increased, a high dislocation density was retained in the Cu matrix even after annealing, while in the region where the Ag solute content did not increase, the dislocation density decreased by more than one order of magnitude. Therefore, in the cryorolled and annealed samples, heterogeneous microstructures were developed where both the dislocation density and the solute concentration varied considerably. © Published under licence by IOP Publishing Ltd.
About the journal
JournalIOP Conference Series: Materials Science and Engineering
PublisherInstitute of Physics Publishing
ISSN17578981
Open AccessNo
Concepts (17)
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    Annealing
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    Microstructure
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    Nanostructured materials
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    Plastic deformation
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    Rolling
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    Silver alloys
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    Single crystals
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    Thermoelectricity
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    Annealed samples
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    Dislocation densities
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    HETEROGENEOUS MICROSTRUCTURE
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    High dislocation density
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    Liquid nitrogen temperature
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    Micro-structure evolutions
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    SOLUTE CONCENTRATIONS
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    SOLUTE CONTENT
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    Silver