What is Banded Pearlite? How does it form and what is its effect on properties of steels?
Banding is inhomogeneous distribution of alloying elements or phases aligned in filaments or plates parallel to the direction of working. In rolled steel, the areas containing high phosphorus are elongated into bands, which are characterized by the absence of pearlite. These bands are weak owing to the absence of pearlite and presence of phosphorus. Ghost bands are due to local segregation of impurities during the solidification of the ingot; consequently inclusions are frequently present in the bands and dissolved oxygen also causes similar bands.
