2006/09/13 by Laurent Ponson, Daniel Bonamy, L. Barbier +1 · 1 citation
Materials Science · Physics and Astronomy · #Microstructure and mechanical properties #Quasicrystal Structures and Properties #Theoretical and Computational Physics #cond-mat.mtrl-sci #cond-mat.stat-mech
paper · pdf · doi:10.1103/physrevb.74.184205
published as Physical Review B 74 (20/11/2006) 184205 · 8 pages
arxiv created 2006/09/13 · openalex publication_date 2006/11/20 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Roughness of i\text\ensuremath-AlPdMn fracture surfaces are presently analyzed. From the atomic scale up to 2--3\phantom\rule0.3em0exnm, they are shown to exhibit scaling properties hiding the cluster (0.45\phantom\rule0.3em0exnm) aperiodic structure. These properties are quantitatively similar to those observed on various disordered materials, albeit on other ranges of length scales. These properties are interpreted as the signature of damage mechanisms occurring within a 2--3\text\ensuremath-nm-wide zone at the crack tip. The size of this process zone finds its origin in the local temperature elevation at the crack tip. This effect is reported to be responsible for a transition from a perfectly brittle behavior to a nanoductile one.