Answer
Coring is the phenomenon wherein the concentration gradients exist across grains in polycrystalline alloys, with higher concentrations of the component having the lower melting temperature at the grain boundaries. It occurs during solidification as a consequence of cooling rates that are too rapid to allow for the maintenance of the equilibrium composition of the solid phase.
Work Step by Step
Coring is the phenomenon wherein the concentration gradients exist across grains in polycrystalline alloys, with higher concentrations of the component having the lower melting temperature at the grain boundaries. It occurs during solidification as a consequence of cooling rates that are too rapid to allow for the maintenance of the equilibrium composition of the solid phase.
