Journal
COMPUTATIONAL MATERIALS SCIENCE
Volume 79, Issue -, Pages 896-902Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.commatsci.2013.06.057
Keywords
Size effects; b.c.c. single crystals; Enhanced strain; gradient crystal-plasticity theory; Strain gradients; Ti alloy (Ti15V3Cr3Al3Sn); Plasticity
Categories
Funding
- European Union [PITN-GA-2008-211536]
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An enhanced model of strain-gradient crystal plasticity is used to study the deformation behaviour of b.c.c. single crystals of a beta-Ti alloy under indentation. In this model, both incipient strain gradients, linked to a component's surface-to-volume ratio, and strain gradients evolving in the course of deformation were characterised. The results of numerical simulations are in a good agreement with the obtained experimental data demonstrating an anisotropic nature of surface topographies around the indents performed in different crystallographic orientations. The influence of evolved strain gradients on the surface profile of indents is demonstrated. (C) 2013 Elsevier B.V. All rights reserved.
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