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2012 | 122 | 3 | 482-484
Article title

Crystal Plasticity Treated as a Quasi-Static Material Flow through Adjustable Crystal Lattice

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EN
Abstracts
EN
Considering high pressure torsion experiments as a motivation, plastic behavior of crystalline solids is treated as a highly viscous material flow through an adjustable crystal lattice. Instead of the traditional decomposition rule considering the deformation gradient as a product of the elastic and plastic parts, the proposed model is based on its rate form: the velocity gradient consists of the lattice velocity gradient and the sum of the velocity gradients corresponding to the slip rates of individual slip systems; the slip strains themselves are not defined in the model. The geometrical changes caused by material flow and the slip strains can be specified a posteriori. Crystal lattice distortions are measured with respect to a lattice reference configuration. In an adopted rigid plastic approximation the lattice distortions are reduced to rotations. Constitutive equations incorporate non-local hardening caused by close range interactions among dislocations.
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EN
Year
Volume
122
Issue
3
Pages
482-484
Physical description
Dates
published
2012-09
References
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv122z3p14kz
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