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Microstructure evolution in the equal channel angular extrusion process
Published in
2004
Volume: 193
   
Issue: 48-51
Pages: 5177 - 5194
Abstract
We apply a theory of single-crystal plasticity with microstructure to the simulation of the ECAE process. The specific microstructures considered in the simulations are of the sequential lamination type. The size of the microstructure is estimated a posteriori by means of a nonlocal extension of the theory which accounts for dislocation energies. Texture evolution is calculated simply by recourse to Taylor's hypothesis. Calculations concerned with an FCC material (Al-Cu alloy) and 90° ECAE reveal a wealth of information regarding the geometry, size, and texture evolution of subgrain microstructures. The predicted sizes and textures are in good quantitative agreement with the available experimental data. © 2004 Elsevier B.V. All rights reserved.
About the journal
JournalComputer Methods in Applied Mechanics and Engineering
ISSN00457825
Open AccessNo
Concepts (8)
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    Dislocations (crystals)
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    Extrusion
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    Laminating
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    Textures
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    Microstructure evolution
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    NONLOCAL EXTENSION
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    SUBGRAIN MICROSTRUCTURES
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    Microstructure