2008/01/05 by Joel Berry, K. R. Elder, Martin Grant · 2 citations
Earth and Planetary Sciences · Engineering · Materials Science · Physics and Astronomy · #Aluminum Alloy Microstructure Properties #Solidification and crystal growth phenomena #cond-mat.mtrl-sci #nanoparticles nucleation surface interactions
paper · pdf · doi:10.1103/physrevb.77.224114
4 pages, 3 figures
arxiv created 2008/01/05 · openalex publication_date 2008/06/26 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
Dislocation and grain-boundary melting are studied in three dimensions using the phase field crystal method. Isolated dislocations are found to melt radially outward from their core, as the localized excess elastic energy drives a power-law divergence in the melt radius. Dislocations within low angle to intermediate angle grain boundaries melt similarly until an angle-dependent first-order wetting transition occurs when neighboring melted regions coalesce. High angle boundaries are treated within a screening approximation, and issues related to ensembles, metastability, and grain size are discussed.