TY - JOUR
T1 - Modeling contact deformation of bare and coated rough metal bodies
AU - Civiero, R.
AU - Perez-Rafols, F.
AU - Nicola, L.
PY - 2023
Y1 - 2023
N2 - The effect of the presence of a passivation layer on a metal rough surface during contact loading is investigated by means of dislocation dynamics simulations. The metal body is modeled as an FCC single crystal with a self-affine rough surface that is either bare, or covered by a thin coating, impenetrable to dislocations. This analysis permits to isolate the effect of surface roughening driven by dislocation motion: when the surface is bare the dislocations can glide out, leaving crystallographic steps at the surface that modify the local roughness; when the surface is passivated, dislocations are stopped by the interface.
AB - The effect of the presence of a passivation layer on a metal rough surface during contact loading is investigated by means of dislocation dynamics simulations. The metal body is modeled as an FCC single crystal with a self-affine rough surface that is either bare, or covered by a thin coating, impenetrable to dislocations. This analysis permits to isolate the effect of surface roughening driven by dislocation motion: when the surface is bare the dislocations can glide out, leaving crystallographic steps at the surface that modify the local roughness; when the surface is passivated, dislocations are stopped by the interface.
KW - Contact mechanics
KW - Dislocation dynamics
KW - Self-affine surfaces
KW - Strain hardening
UR - http://www.scopus.com/inward/record.url?scp=85147994591&partnerID=8YFLogxK
U2 - 10.1016/j.mechmat.2023.104583
DO - 10.1016/j.mechmat.2023.104583
M3 - Article
AN - SCOPUS:85147994591
SN - 0167-6636
VL - 179
JO - Mechanics of Materials
JF - Mechanics of Materials
M1 - 104583
ER -