Crack propagation in quasicrystals
Materials Science
2009-10-31 v1
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.
Cite
@article{arxiv.cond-mat/9804279,
title = {Crack propagation in quasicrystals},
author = {R. Mikulla and J. Stadler and F. Krul and H. -R. Trebin and P. Gumbsch},
journal= {arXiv preprint arXiv:cond-mat/9804279},
year = {2009}
}
Comments
4. pages, 4 figures