TY  - JOUR
AU  - Gola, Adrien
AU  - Schwaiger, Ruth
AU  - Gumbsch, Peter
AU  - Pastewka, Lars
TI  - Pattern Formation During Deformation of Metallic Nanolaminates
JO  - Physical review materials
VL  - 4
IS  - 1
SN  - 2475-9953
CY  - College Park, MD
PB  - APS
M1  - FZJ-2022-01915
SP  - 013603
PY  - 2020
AB  - We used nonequilibrium molecular dynamics simulations to study the shear deformation of metallic composites composed of alternating layers of Cu and Au. Our simulations reveal the formation of “vortices” or “swirls” if the bimaterial interfaces are atomically rough and if none of the {111} planes that accommodate slip in fcc materials are exactly parallel to this interface. We trace the formation of these patterns back to grain rotation, induced by hindering dislocations from crossing the bimaterial interface. The instability is accompanied by shear softening of the material. These calculations shed light on recent observations of pattern formation in plastic flow, mechanical mixing of materials, and the common formation of a tribomutation layer in tribologically loaded systems.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000506617300001
DO  - DOI:10.1103/PhysRevMaterials.4.013603
UR  - https://juser.fz-juelich.de/record/907236
ER  -