The effect of crystallographic orientation on void growth: A molecular dynamics study

M. A. Bhatia, K. N. Solanki, A. Moitra, M. A. Tschopp

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In ductile materials, fracture involves void nucleation, growth and coalescence. The objective of this research is to understand how crystallographic orientation influences void growth in uniaxial tensile deformation of aluminum. We used molecular dynamics to simulate void growth in a spherical void embedded cubic specimen with periodic boundary conditions under remote uniaxial tension. The simulation results reveal how crystallographic orientation affects the yield stress and void growth corresponding to dislocation nucleation from the void surface and resulting in shear loops in perfect FCC lattice. Varying dislocation patterns/shear loops occur according to the specimens different orientations, thereby affirming the effect of crystallographic orientation. Consequently, atomistic simulations of this type can indeed inform continuum void growth models for application in multiscale models.

Original languageEnglish (US)
Title of host publicationTMS 2011 - 140th Annual Meeting and Exhibition, Supplemental Proceedings
Pages577-584
Number of pages8
StatePublished - Jul 27 2011
EventTMS 2011 - 140th Annual Meeting and Exhibition - San Diego, CA, United States
Duration: Feb 27 2011Mar 3 2011

Publication series

NameTMS Annual Meeting
Volume2

Other

OtherTMS 2011 - 140th Annual Meeting and Exhibition
CountryUnited States
CitySan Diego, CA
Period2/27/113/3/11

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Keywords

  • Aluminum
  • Dislocation loop
  • Molecular dynamics
  • Void growth

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

Cite this

Bhatia, M. A., Solanki, K. N., Moitra, A., & Tschopp, M. A. (2011). The effect of crystallographic orientation on void growth: A molecular dynamics study. In TMS 2011 - 140th Annual Meeting and Exhibition, Supplemental Proceedings (pp. 577-584). (TMS Annual Meeting; Vol. 2).