Fracture Behavior Transition in (001) Cracked Metal Nanoplates Induced by the Surface Effect

Hokun Kim, Duc Tam Ho, Sung Youb Kim

Research output: Contribution to journalArticlepeer-review

Abstract

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 languageEnglish (US)
JournalThe Journal of Physical Chemistry C
DOIs
StatePublished - Feb 16 2021

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials

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