Theoretical investigation and modeling of intermetallic inclusion formation in laser treatment of Al-Mg alloys

The article deals with phase transformation in aluminum-magnesium alloys during high speed cooling after the laser action. The intermetallic precipitation growing is calculated with the reaction-diffusion model. The "shooting" method was used for analytical solution of equation for grow of spherical inclusion. Mutual influence in ensemble of precipitation is taken into account as changes of admixture concentration on "infinity". Unification of model of precipitation ensemble development with the stochastic model of precipitation engendering and self-consistent model of laser welding allow to calculate a size distribution of inclusions in heat effected zone.© (2004) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.