Development of a 3D Crystal Plasticity Model that Tracks Dislocation Density Evolution

Alankar Alankar; Ioannis N. Mastorakos; David P. Field

doi:10.4028/www.scientific.net/SSP.160.57

Paper Titles

Texture Control in Non-Oriented Electrical Steels by Severe Plastic Deformation
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Texture versus Residual Deformation Effects in Metal Materials: Principles of Experimental Approach and General Regularities
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Application of Electron Backscatter Diffraction to Grain Boundaries
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Texture Heterogeneity in ECAP Deformed Copper
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Development of a 3D Crystal Plasticity Model that Tracks Dislocation Density Evolution
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Texture Analysis with MTEX – Free and Open Source Software Toolbox
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Structure Stability and Magnetic Properties of Ni₂XGa (X = Mn, Fe, Co) Ferromagnetic Shape Memory Alloys by DFT Approach
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Magnetic Quantitative Texture Analysis Using Isotropic Thermal Neutron Beams
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Influence of the Crystallographic and the Morphological Texture on the Elastic Properties of Fcc Crystal Aggregates
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HomeSolid State PhenomenaSolid State Phenomena Vol. 160Development of a 3D Crystal Plasticity Model that...

Development of a 3D Crystal Plasticity Model that Tracks Dislocation Density Evolution

Abstract:

A dislocation density based crystal plasticity finite element model (CPFEM) is developed for aluminum in which dislocation densities evolve on all octahedral slip systems. Based upon the kinematics of crystal deformation and dislocation interaction laws, dislocation generation and annihilation are modeled. The CPFEM model is calibrated for pure aluminum using experimental stress-strain curves of pure aluminum single crystal from literature. Crystallographic texture predictions in plane-strain compression of aluminum are validated against experimental observations in the literature. The framework is implemented in ABAQUS with user interface UMAT subroutine. Dislocation densities evolve and are tracked as state variables in the model, leading to spatially inhomogeneous dislocation densities that show patterning in the dislocation structures.

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Periodical:

Solid State Phenomena (Volume 160)

Pages:

57-62

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.160.57

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Online since:

February 2010

Authors:

Alankar Alankar, Ioannis N. Mastorakos, David P. Field

Keywords:

Aluminum Rolling, Channel Die Compression, Crystal Plasticity, Dislocation, Texture Evolution

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