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  Modeling and simulation of deformation behavior, orientation gradient development and heterogeneous hardening in thin sheets with coarse texture

Klusemann, B., Svendsen, B., & Vehoff, H. (2013). Modeling and simulation of deformation behavior, orientation gradient development and heterogeneous hardening in thin sheets with coarse texture. International Journal of Plasticity, 50, 109-126. doi:10.1016/j.ijplas.2013.04.004.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-A176-D Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-A177-B
Genre: Journal Article

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 Creators:
Klusemann, Benjamin1, 2, 3, Author              
Svendsen, Bob4, 5, Author              
Vehoff, Horst6, Author              
Affiliations:
1Hamburg University of Technology, Institute of Continuum Mechanics and Materials Mechanics, Hamburg, Germany, ou_persistent22              
2California Institute of Technology, Graduate Aerospace Laboratories, 1200 East California Boulevard, Pasadena, CA 91125, USA, ou_persistent22              
3Material Mechanics, RWTH Aachen University, Schinkelstr. 2, 52062 Aachen, Germany, ou_persistent22              
4Material Mechanics, Faculty of Georesources and Materials Engineering, RWTH Aachen University, Schinkelstraße 2, D-52062 Aachen, Germany , ou_persistent22              
5Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863381              
6Department of Material Science, University of Saarland, Saarbrücken, Germany, ou_persistent22              

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Free keywords: Crystal plasticity; GND-based kinematic hardening; Grain boundary strengthening; Grain morphology; Oligocrystal; Orientation gradient; Reorientation
 Abstract: The purpose of this work is the modeling of the deformation behavior and orientation gradient development in a highly anisotropic thin metal sheet and comparison with experiment. This sheet consists of a single layer of "large" Fe-3%Si grains exhibiting a coarse texture. Since such materials are highly heterogeneous, they are modeled by combining single-crystal plasticity for each grain with the finite-element method for the grain morphology and specimen as a whole. The single-crystal model is rate-dependent, accounts for (local) dissipative hardening effects, and has been identified with the help of single-crystal data. In previous work Klusemann et al. (2012b), model predictions for the evolution of the specimen geometry and grain morphology during tension loading to large deformation have been shown to agree reasonably well with the corresponding experimental results of Henning and Vehoff (2005). In the current work, model predictions for the development of orientation gradients in the specimen under different modeling assumptions (e.g., active glide-system family) are compared with EBSD-based experimental results of Henning and Vehoff (2005). Model predictions for the development of geometrically necessary dislocations are also discussed. As well, additional measures of local orientation evolution such as reorientation are examined and compared with the orientation gradient picture. In addition, we examine the effect of additional grain boundary strengthening related to grain boundary misorientation and grain size and the effect of additional GND-based kinematic hardening. (C) 2013 Elsevier Ltd. All rights reserved.

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Language(s): eng - English
 Dates: 2013-11
 Publication Status: Published in print
 Pages: 18
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Degree: -

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Title: International Journal of Plasticity
  Abbreviation : Int. J. Plast.
Source Genre: Journal
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Publ. Info: New York : Pergamon
Pages: - Volume / Issue: 50 Sequence Number: - Start / End Page: 109 - 126 Identifier: ISSN: 0749-6419
CoNE: /journals/resource/954925544230