Stress-driven phase transformation and the roughening of solid-solid interfaces
Abstract
The application of stress to multiphase solid-liquid systems often results in morphological instabilities. Here we propose a solid-solid phase transformation model for roughening instability in the interface between two porous materials with different porosities under normal compression stresses. This instability is triggered by a finite jump in the free energy density across the interface, and it leads to the formation of finger-like structures aligned with the principal direction of compaction. The model is proposed as an explanation for the roughening of stylolites - irregular interfaces associated with the compaction of sedimentary rocks that fluctuate about a plane perpendicular to the principal direction of compaction.
Cite
@article{arxiv.0711.2004,
title = {Stress-driven phase transformation and the roughening of solid-solid interfaces},
author = {L. Angheluta and E. Jettestuen and J. Mathiesen and F. Renard and B. Jamtveit},
journal= {arXiv preprint arXiv:0711.2004},
year = {2009}
}
Comments
(4 pages, 4 figures)