Effects of strontium impurity on the structure and dynamics of Al88Si12 liquid.

TitleEffects of strontium impurity on the structure and dynamics of Al88Si12 liquid.
Publication TypeJournal Article
Year of Publication2013
AuthorsYue GQ, Wu S, Shen B, Wang SY, Wang CZ, Ho KM, Kramer MJ, Chen LY
JournalJournal of physics. Condensed matter : an Institute of Physics journal
Volume25
Issue24
Pagination245102
Date Published2013 Jun 19
Abstract

The effects of strontium modification on the structure and dynamics of Al88Si12 liquid are studied by means of ab initio molecular dynamics simulations. By replacing 0.5% and 4.0% of Al with Sr, we show that the addition of Sr lowers the self-diffusion of Al and Si of the liquid and reduces the nearest-neighbor correlation between Si atoms. The simulation provides an explanation for the change in morphology of the eutectic phases observed in rapidly solidified Al-Si alloys modified with Sr.

DOI10.1088/0953-8984/25/24/245102
Alternate JournalJ Phys Condens Matter