A mixture of ferrite and cementite forming distinct levels or groups in slowly cooled carbon steels.
Variant of perlite.
A two-phased lamellar structure consists of alternating levels of alpha ferrite and cementite that occurs in a few steels and cast irons, having a pearlescent appearance.
alternate kind of perlite.
A glassy volcanic rock of a grayish shade and pearly luster, frequently having a spherulitic concretionary structure as a result of the curved cracks generated by contraction in air conditioning. See Illust. under perlitic.
The eutectoid of metal.
a lamellar blend of cementite and ferrite formed through the air conditioning of austenite; a constituent of steel and cast-iron