Abstract
The effect of surface layer modification on the deformation-induced surface roughening in polycrystalline materials is investigated numerically. Three-dimensional constitutive models of as-received and surface-hardened polycrystals are constructed and implemented in finite-difference calculations. The free surface is shown to undergo out-of-plane displacements due to microscale stresses developing in the subsurface layer and acting across the free surface. The surface-hardened layer as thin as half the grain diameter efficiently suppresses grain-scale surface displacements. The thicker is the hardened layer, the smoother is the surface of the material.
Original language | English |
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Pages (from-to) | 359-370 |
Number of pages | 12 |
Journal | Meccanica |
Volume | 51 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1 Feb 2016 |
Keywords
- Numerical simulation
- Plastic strain localization
- Surface hardening
- Surface roughening
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering