Assessment of X-ray diffraction and crystal plasticity lattice strain evolutions under biaxial loading
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Published version
Author(s)
Erinosho, TO
Collins, DM
Wilkinson, AJ
Todd, RI
Dunne, FPE
Type
Journal Article
Abstract
A methodology to simulate X-ray diffraction lattice strains using crystal plasticity, replicating in-situ synchrotron experimental measurements during the deformation of a low-carbon steel, has been developed. Uniquely, the model calculated lattice strains for full Debye–Scherrer diffraction rings, providing the in-plane lattice strain distributions determined from crystal plasticity. Thus, a direct method of comparison between experimental and crystal plasticity results becomes possible. The model considered two forms of hardening whilst subjecting the material to two dissimilar proportional strain-paths; uniaxial and balanced biaxial deformation. Both deformation paths showed influence on resulting lattice strain distributions which were also found to depend upon texture. Biaxial straining led to a stronger dependence on the material's hardening behaviour and this was attributed to the higher rate of work hardening seen under biaxial compared to uniaxial straining. However, biaxial deformation showed quite isotropic lattice strains distribution, irrespective of initial texture or hardening. Quantitatively, good agreement between the computed and experimentally determined lattice strain distributions was obtained for each strain path. This success demonstrates the possibility of calibrating crystal plasticity model parameters using such methodologies, or simply to provide insight into the governing mechanisms in polycrystal deformation.
Date Issued
2016-04-05
Date Acceptance
2016-03-27
Citation
International Journal of Plasticity, 2016, 83, pp.1-18
ISSN
1879-2154
Publisher
Elsevier
Start Page
1
End Page
18
Journal / Book Title
International Journal of Plasticity
Volume
83
Copyright Statement
© 2016 Elsevier. Made available open access under a Creative Commons CC BY license.
Subjects
Science & Technology
Technology
Engineering, Mechanical
Materials Science, Multidisciplinary
Mechanics
Engineering
Materials Science
Finite element
Crystal Plasticity
Microstructures
X-ray diffraction
RESIDUAL-STRESS DISTRIBUTIONS
FINITE-ELEMENT METHOD
DEFORMING POLYCRYSTALS
DEFORMATION
ENERGY
TEXTURE
SUBSTRUCTURE
SIMULATIONS
METHODOLOGY
ORIENTATION
Mechanical Engineering & Transports
0905 Civil Engineering
0912 Materials Engineering
0913 Mechanical Engineering
Publication Status
Published