pearliteihin
Pearlite is a two-phase lamellar structure of ferrite and cementite, formed when austenite of eutectoid composition transforms into these two phases. It is a common microstructure in steels and cast irons. The lamellae, or layers, of ferrite (a solid solution of carbon in iron) and cementite (iron carbide, Fe3C) are typically on the order of a micrometer thick, though this can vary with cooling rate.
The formation of pearlite occurs during the slow cooling of steel from its austenite phase. The rate
Pearlite is known for its good combination of strength and toughness, making it a prevalent microstructure