Crack propagation in quasicrystals
arXiv:cond-mat/9804279 · doi:10.1103/PhysRevLett.81.3163
Abstract
Crack propagation is studied in a two dimensional decagonal model quasicrystal. The simulations reveal the dominating role of highly coordinated atomic environments as structure intrinsic obstacles for both dislocation motion and crack propagation. For certain overloads, these obstacles and the quasiperiodic nature of the crystal result in a specific crack propagation mechanism: The crack tip emits a dislocation followed by a phason wall, along which the material opens up.
4. pages, 4 figures
References in corpus (2)
Cited by in corpus (5)
- A New Criterion for Crack Formation in Disordered Materials
- Cleaved surface of i-AlPdMn quasicrystals: Influence of the local temperature elevation at the crack tip on the fracture surface roughness
- Dynamic fracture of icosahedral model quasicrystals: A molecular dynamics study
- Phason Dynamics in One-Dimensional Lattices
- On the equations of motion of dislocations in quasicrystals