Equiaxed zone: Region within cast metals (usually the core of the casting) where the grains are approximately the same size in every direction. Equilibrium freezing temperature: Temperature when solidification of molten material occurs under standard thermodynamic conditions.

What is an equiaxed grain?

From Wikipedia, the free encyclopedia. Equiaxed crystals are crystals that have axes of approximately the same length. Equiaxed grains can in some cases be an indication for recrystallization. Equiaxed crystals can be achieved by heat treatment, namely annealing and normalizing.

How columnar zone is formed?

Columnar zone: Region within cast metals (usually between the chill and equiaxed zones) where the grain structure is elongated in the solidification direction. Dendrites: Fine branches of solid material that project into the melt zone during solidification.