In the former case, the objects are heated only to the neighbourhood of Aci, say to 730° C., so that the 0-iron may slip into the a state, and the transformation of the austenite into pearlite and cementite may complete itself.
Forged and annealed, magnified r000 diameters, showing pearlite.
- (Osmond.) Pearlite, steel (carbon about r%) forged and annealed at 800° C. Magnified 1000 diameters.
- (Stoughton.) Meshes of pearlite in a netv.-ork of ferrite, from hypo-eutectoid steel.
FIC. r3.--(Stoughton.) Meshes of pearlite in a network of cementite from hyper-eutectoid steel.