A micromechanical analysis of deformation-induced surface roughening in surface-modified polycrystalline materials

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	https://doi.org/10.1007/s11012-015-0294-x
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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10.1007/s11012-015-0294-x

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title = "A micromechanical analysis of deformation-induced surface roughening in surface-modified polycrystalline materials",

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.",

keywords = "Numerical simulation, Plastic strain localization, Surface hardening, Surface roughening",

author = "Varvara Romanova and Ruslan Revovich Balokhonov and Olga Zinovieva",

year = "2016",

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doi = "10.1007/s11012-015-0294-x",

language = "English",

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journal = "Meccanica",

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T1 - A micromechanical analysis of deformation-induced surface roughening in surface-modified polycrystalline materials

AU - Romanova, Varvara

AU - Balokhonov, Ruslan Revovich

AU - Zinovieva, Olga

PY - 2016/2/1

Y1 - 2016/2/1

N2 - 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.

AB - 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.

KW - Numerical simulation

KW - Plastic strain localization

KW - Surface hardening

KW - Surface roughening

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