Abstract
To understand the formation of the deformation substructure and its evolution during annealing to produce unique microstructures and textures in aluminum alloys, the development and coupling of physically based models spanning different length scales is necessary. Under hot deformation conditions, the deformation substructure is a collection of cells/subgrains of different sizes and orientations. Recrystallization following hot deformation occurs by the heterogeneous evolution of the subgrain structure, the kinetics of which is controlled by variations in driving forces and boundary properties at the microstructural length scale. This article describes a mesoscale approach for modeling the microstructure and texture evolution during recrystallization following hot deformation. A Monte Carlo simulation technique is used to evolve the substructure and texture during recrystallization. The simulations are applied to the deformation and recrystallization of aluminum bicrystals with specific combinations of crystallographic orientations. The simulation results are compared with experimental results.
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Editor’s Note: Research sponsored by the Division of Materials Science and Engineering, U.S. Department of Energy, under contract DE-AC05-00OR22725 with UT-Battelle, LLC. The submitted manuscript has been authored by a contractor of the U.S. Government under contract No. DE-AC05-00OR22725. Accordingly, the U.S. Government retains a non-exclusive, royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for U.S. Government purposes.
For more information, contact B. Radhakrishnan, Oak Ridge National Laboratory, Computer Science and Mathematics Division, Oak Ridge, TN 37831-6008; (865) 241-3861; (865) 241-0381; e-mail radhakrishnb@ornl.gov.
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Radhakrishnan, B., Sarma, G. Simulating the deformation and recrystallization of aluminum bicrystals. JOM 56, 55–62 (2004). https://doi.org/10.1007/s11837-004-0074-x
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DOI: https://doi.org/10.1007/s11837-004-0074-x