3D simulation of surface tension driven interdendritic convection and microsegregation during laser surface alloying

The development of solute distribution at dendritic interface for one step laser surface alloying /3/ is investigated by numerical simulation. The dendritic mushy zone is approximated by columnar dendritic structure whereby the geometrical dimension and orientation within the liquid domain is derived from experimental results. Results concerning penetration depth of Marangoni flow in interdendritic zone and local solute distribution at dendrites surface are presented.