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 |
|---|---|
| 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
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Cite this
Romanova, V., Balokhonov, RR., & Zinovieva, O. (2016). A micromechanical analysis of deformation-induced surface roughening in surface-modified polycrystalline materials. Meccanica, 51(2), 359-370. https://doi.org/10.1007/s11012-015-0294-x