TY  - JOUR
AU  - Gola, Adrien
AU  - Zhang, Guang-Ping
AU  - Pastewka, Lars
AU  - Schwaiger, Ruth
TI  - Surface Flaws Control Strain Localization in the Deformation of Cu|Au Nanolaminate Pillars
JO  - MRS communications
VL  - 9
IS  - 3
SN  - 2159-6859
CY  - Cambridge
PB  - Cambridge Univ. Press
M1  - FZJ-2022-01917
SP  - 1067 - 1071
PY  - 2019
AB  - The authors carried out matched experiments and molecular dynamics simulations of the compression of nanopillars prepared from Cu|Au nanolaminates with up to 25 nm layer thickness. The stress–strain behaviors obtained from both techniques are in excellent agreement. Variation in the layer thickness reveals an increase in the strength with a decreasing layer thickness. Pillars fail through the formation of shear bands whose nucleation they trace back to the existence of surface flaws. This combined approach demonstrates the crucial role of contact geometry in controlling the deformation mode and suggests that modulus-matched nanolaminates should be able to suppress strain localization while maintaining controllable strength.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000488237800036
DO  - DOI:10.1557/mrc.2019.93
UR  - https://juser.fz-juelich.de/record/907238
ER  -