In this study, we show that the fracture mode of (001) cracked metal nanoplates is strongly dependent on the size through molecular dynamics simulations. Cracked nanoplates with smaller sizes exhibit an elastic instability-dominant fracture followed by a ductile behavior, whereas larger cracked nanoplates exhibit a brittle fracture. A brittle fracture is caused by an embedded crack, whereas the elastic instability-dominant fracture is due to a failure of the nanoplate by elastic instability, which is influenced by the surface effect. We provide numerical and theoretical evidence to show that the transition in the fracture behavior of a cracked metal nanoplate is due to the competition between the crack and the free surfaces.
|Original language||English (US)|
|Journal||The Journal of Physical Chemistry C|
|State||Published - Feb 16 2021|
Bibliographical noteKAUST Repository Item: Exported on 2021-04-19
Acknowledgements: We gratefully acknowledge the support from the Mid-Career Researcher Support Program (Grant No. 2019R1A2C2011312) of the National Research Foundation (NRF) of Korea and from the Meta-Structure Based Seismic Shielding Research Fund (Project No. 1.200043.01) of UNIST. We also acknowledge with gratitude the supercomputing resources of the UNIST supercomputing Center.
ASJC Scopus subject areas
- Surfaces, Coatings and Films
- Physical and Theoretical Chemistry
- Electronic, Optical and Magnetic Materials